1KF6 - JenaLib

Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Biological Unit 3 (Jmol Viewer)

Title :   E. COLI QUINOL-FUMARATE REDUCTASE WITH BOUND INHIBITOR HQNO

Authors :   T. M. Iverson, C. Luna-Chavez, L. R. Croal, G. Cecchini, D. C. Rees

Date :   19 Nov 01 (Deposition) - 13 Mar 02 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.70

Chains :   Asym. Unit : A,B,C,D,M,N,O,P
Biol. Unit 1: A,B,C,D  (1x)
Biol. Unit 2: M,N,O,P  (1x)
Biol. Unit 3: A,B,C,D,M,N,O,P  (1x)

Keywords :   Respiration, Fumarate Reductace, Succinate Dehydrogenase, Complex Ii, Quinol, Quinone, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   T. M. Iverson, C. Luna-Chavez, L. R. Croal, G. Cecchini, D. C. Rees
Crystallographic Studies Of The Escherichia Coli Quinol-Fumarate Reductase With Inhibitors Bound To The Quinol-Binding Site.
J. Biol. Chem. V. 277 16124 2002
PubMed-ID: 11850430 | Reference-DOI: 10.1074/JBC.M200815200
(for further references see the PDB file header)

Molecule 1 - FUMARATE REDUCTASE FLAVOPROTEIN
	Chains	:	A, M
	EC Number	:	1.3.99.1
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PFA
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

Molecule 2 - FUMARATE REDUCTASE IRON-SULFUR PROTEIN
	Chains	:	B, N
	EC Number	:	1.3.99.1
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PFA
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

Molecule 3 - FUMARATE REDUCTASE 15 KDA HYDROPHOBIC PROTEIN
	Chains	:	C, O
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PFA
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

Molecule 4 - FUMARATE REDUCTASE 13 KDA HYDROPHOBIC PROTEIN
	Chains	:	D, P
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PFA
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	ESCHERICHIA COLI
	Organism Taxid	:	562

		1	2	3	4	5	6	7	8
Asymmetric Unit	:	A	B	C	D	M	N	O	P
Biological Unit 1 (1x)	:	A	B	C	D
Biological Unit 2 (1x)	:					M	N	O	P
Biological Unit 3 (1x)	:	A	B	C	D	M	N	O	P

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (10, 23)

No.	Name	Count	Type	Full Name
1	1PE	1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	ACT	3	Ligand/Ion	ACETATE ION
3	CE1	5	Ligand/Ion	O-DODECANYL OCTAETHYLENE GLYCOL
4	F3S	2	Ligand/Ion	FE3-S4 CLUSTER
5	FAD	2	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
6	FES	2	Ligand/Ion	FE2/S2 (INORGANIC) CLUSTER
7	HQO	2	Ligand/Ion	2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE
8	K	2	Ligand/Ion	POTASSIUM ION
9	OAA	2	Ligand/Ion	OXALOACETATE ION
10	SF4	2	Ligand/Ion	IRON/SULFUR CLUSTER

Biological Unit 1 (8, 9)

No.	Name	Count	Type	Full Name
1	1PE	1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	ACT	2	Ligand/Ion	ACETATE ION
3	CE1	-1	Ligand/Ion	O-DODECANYL OCTAETHYLENE GLYCOL
4	F3S	1	Ligand/Ion	FE3-S4 CLUSTER
5	FAD	1	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
6	FES	1	Ligand/Ion	FE2/S2 (INORGANIC) CLUSTER
7	HQO	1	Ligand/Ion	2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE
8	K	-1	Ligand/Ion	POTASSIUM ION
9	OAA	1	Ligand/Ion	OXALOACETATE ION
10	SF4	1	Ligand/Ion	IRON/SULFUR CLUSTER

Biological Unit 2 (8, 12)

No.	Name	Count	Type	Full Name
1	1PE	-1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	ACT	1	Ligand/Ion	ACETATE ION
3	CE1	5	Ligand/Ion	O-DODECANYL OCTAETHYLENE GLYCOL
4	F3S	1	Ligand/Ion	FE3-S4 CLUSTER
5	FAD	1	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
6	FES	1	Ligand/Ion	FE2/S2 (INORGANIC) CLUSTER
7	HQO	1	Ligand/Ion	2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE
8	K	-1	Ligand/Ion	POTASSIUM ION
9	OAA	1	Ligand/Ion	OXALOACETATE ION
10	SF4	1	Ligand/Ion	IRON/SULFUR CLUSTER

Biological Unit 3 (9, 21)

No.	Name	Count	Type	Full Name
1	1PE	1	Ligand/Ion	PENTAETHYLENE GLYCOL
2	ACT	3	Ligand/Ion	ACETATE ION
3	CE1	5	Ligand/Ion	O-DODECANYL OCTAETHYLENE GLYCOL
4	F3S	2	Ligand/Ion	FE3-S4 CLUSTER
5	FAD	2	Ligand/Ion	FLAVIN-ADENINE DINUCLEOTIDE
6	FES	2	Ligand/Ion	FE2/S2 (INORGANIC) CLUSTER
7	HQO	2	Ligand/Ion	2-HEPTYL-4-HYDROXY QUINOLINE N-OXIDE
8	K	-1	Ligand/Ion	POTASSIUM ION
9	OAA	2	Ligand/Ion	OXALOACETATE ION
10	SF4	2	Ligand/Ion	IRON/SULFUR CLUSTER

Asymmetric Unit (23, 23)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	THR A:357 , MET A:358 , GLY A:359 , GLU A:379 , SER A:381	BINDING SITE FOR RESIDUE K A 720
02	AC2	SOFTWARE	THR M:357 , MET M:358 , GLY M:359 , GLU M:379 , SER M:381	BINDING SITE FOR RESIDUE K M 820
03	AC3	SOFTWARE	HIS A:232 , LEU A:242 , THR A:244 , GLU A:245 , HIS A:355 , ARG A:390 , GLY A:392 , SER A:393 , FAD A:721	BINDING SITE FOR RESIDUE OAA A 702
04	AC4	SOFTWARE	ASP A:556 , ARG A:562 , GLU A:564	BINDING SITE FOR RESIDUE ACT A 703
05	AC5	SOFTWARE	ARG A:452 , GLY B:41 , ASP B:45	BINDING SITE FOR RESIDUE ACT B 704
06	AC6	SOFTWARE	PHE M:116 , HIS M:232 , LEU M:242 , THR M:244 , GLU M:245 , ARG M:287 , HIS M:355 , ARG M:390 , SER M:393 , FAD M:821	BINDING SITE FOR RESIDUE OAA M 802
07	AC7	SOFTWARE	TRP M:448 , ARG M:452 , GLY N:41 , ASP N:45 , TYR N:53 , TRP N:55	BINDING SITE FOR RESIDUE ACT N 803
08	AC8	SOFTWARE	SER B:56 , CYS B:57 , ARG B:58 , CYS B:62 , GLY B:63 , CYS B:65 , CYS B:77	BINDING SITE FOR RESIDUE FES B 244
09	AC9	SOFTWARE	CYS B:158 , GLN B:160 , CYS B:204 , THR B:205 , PHE B:206 , VAL B:207 , GLY B:208 , TYR B:209 , CYS B:210 , ILE B:224	BINDING SITE FOR RESIDUE F3S B 245
10	BC1	SOFTWARE	CYS B:148 , ILE B:149 , CYS B:151 , GLY B:152 , CYS B:154 , CYS B:214	BINDING SITE FOR RESIDUE SF4 B 246
11	BC2	SOFTWARE	GLY A:11 , ALA A:12 , GLY A:14 , ALA A:15 , SER A:36 , LYS A:37 , VAL A:38 , SER A:43 , HIS A:44 , THR A:45 , ALA A:48 , GLU A:49 , GLY A:50 , GLY A:51 , HIS A:155 , VAL A:157 , ALA A:191 , THR A:192 , GLY A:193 , THR A:203 , ASN A:204 , ASP A:211 , HIS A:355 , TYR A:356 , GLU A:379 , ARG A:390 , SER A:393 , ASN A:394 , SER A:395 , LEU A:396 , LEU A:399 , OAA A:702	BINDING SITE FOR RESIDUE FAD A 721
12	BC3	SOFTWARE	SER N:56 , CYS N:57 , ARG N:58 , CYS N:62 , GLY N:63 , CYS N:65 , CYS N:77	BINDING SITE FOR RESIDUE FES N 244
13	BC4	SOFTWARE	CYS N:158 , GLN N:160 , CYS N:204 , THR N:205 , PHE N:206 , VAL N:207 , GLY N:208 , CYS N:210 , ILE N:224	BINDING SITE FOR RESIDUE F3S N 245
14	BC5	SOFTWARE	CYS N:148 , ILE N:149 , ASN N:150 , CYS N:151 , GLY N:152 , CYS N:154 , CYS N:214 , VAL N:218	BINDING SITE FOR RESIDUE SF4 N 246
15	BC6	SOFTWARE	GLY M:11 , ALA M:12 , GLY M:13 , GLY M:14 , ALA M:15 , SER M:36 , LYS M:37 , VAL M:38 , SER M:43 , HIS M:44 , THR M:45 , ALA M:48 , GLU M:49 , GLY M:50 , GLY M:51 , HIS M:155 , PHE M:156 , VAL M:157 , ALA M:191 , THR M:192 , GLY M:193 , THR M:203 , ASN M:204 , ASP M:211 , LEU M:242 , HIS M:355 , TYR M:356 , GLY M:378 , GLU M:379 , ARG M:390 , SER M:393 , ASN M:394 , SER M:395 , LEU M:396 , LEU M:399 , OAA M:802	BINDING SITE FOR RESIDUE FAD M 821
16	BC7	SOFTWARE	THR B:205 , PHE B:206 , GLN B:225 , LYS B:228 , ARG C:28 , GLU C:29 , TRP D:14 , PHE D:17 , HIS D:80	BINDING SITE FOR RESIDUE HQO C 700
17	BC8	SOFTWARE	THR B:239 , TRP D:76 , ASP P:9 , LYS P:97 , TRP P:98 , TYR P:101 , GLY P:102 , CE1 P:810	BINDING SITE FOR RESIDUE CE1 P 710
18	BC9	SOFTWARE	ASP D:9 , TRP D:98 , ASP P:9 , PHE P:13 , TRP P:76 , CE1 P:710	BINDING SITE FOR RESIDUE CE1 P 810
19	CC1	SOFTWARE	TYR C:129 , LEU D:43 , PHE D:44 , PRO D:45 , GLY D:46 , LEU O:73 , CE1 O:813	BINDING SITE FOR RESIDUE CE1 O 811
20	CC2	SOFTWARE	VAL C:98 , PRO C:107 , SER C:111 , ALA C:114 , VAL C:118 , LEU O:124 , TYR O:129 , PRO P:45	BINDING SITE FOR RESIDUE CE1 O 812
21	CC3	SOFTWARE	TYR C:129 , ARG O:23 , PHE O:24 , GLY O:30 , CE1 O:811	BINDING SITE FOR RESIDUE CE1 O 813
22	CC4	SOFTWARE	GLY A:72 , ARG A:287 , ASP A:288 , LYS A:289 , GLN A:292 , TYR A:466 , GLN A:533	BINDING SITE FOR RESIDUE 1PE A 705
23	CC5	SOFTWARE	THR N:205 , PHE N:206 , GLN N:225 , LYS N:228 , ARG O:28 , GLU O:29 , TRP P:14 , PHE P:17 , ARG P:81	BINDING SITE FOR RESIDUE HQO N 800

(no "SS Bond" information available for 1KF6)

Asymmetric Unit

No.	Residues
1	Gly A:269	-	Pro A:270
2	Gly C:104	-	Pro C:105
3	Gly M:269	-	Pro M:270

(no "SAP(SNP)/Variant" information available for 1KF6)

Asymmetric Unit (5, 10)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	2FE2S_FER_2	PS51085	2Fe-2S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	16-97	2	B:15-96 N:15-96
2	FRD_SDH_FAD_BINDING	PS00504	Fumarate reductase / succinate dehydrogenase FAD-binding site.	FRDA_ECOLI	43-52	2	A:42-51 M:42-51
3	2FE2S_FER_1	PS00197	2Fe-2S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	58-66	2	B:57-65 N:57-65
4	4FE4S_FER_2	PS51379	4Fe-4S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	140-169	2	B:139-168 N:139-168
5	4FE4S_FER_1	PS00198	4Fe-4S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	149-160	2	B:148-159 N:148-159

Biological Unit 1 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	2FE2S_FER_2	PS51085	2Fe-2S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	16-97	1	B:15-96 -
2	FRD_SDH_FAD_BINDING	PS00504	Fumarate reductase / succinate dehydrogenase FAD-binding site.	FRDA_ECOLI	43-52	1	A:42-51 -
3	2FE2S_FER_1	PS00197	2Fe-2S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	58-66	1	B:57-65 -
4	4FE4S_FER_2	PS51379	4Fe-4S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	140-169	1	B:139-168 -
5	4FE4S_FER_1	PS00198	4Fe-4S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	149-160	1	B:148-159 -

Biological Unit 2 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	2FE2S_FER_2	PS51085	2Fe-2S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	16-97	1	- N:15-96
2	FRD_SDH_FAD_BINDING	PS00504	Fumarate reductase / succinate dehydrogenase FAD-binding site.	FRDA_ECOLI	43-52	1	- M:42-51
3	2FE2S_FER_1	PS00197	2Fe-2S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	58-66	1	- N:57-65
4	4FE4S_FER_2	PS51379	4Fe-4S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	140-169	1	- N:139-168
5	4FE4S_FER_1	PS00198	4Fe-4S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	149-160	1	- N:148-159

Biological Unit 3 (5, 10)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	2FE2S_FER_2	PS51085	2Fe-2S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	16-97	2	B:15-96 N:15-96
2	FRD_SDH_FAD_BINDING	PS00504	Fumarate reductase / succinate dehydrogenase FAD-binding site.	FRDA_ECOLI	43-52	2	A:42-51 M:42-51
3	2FE2S_FER_1	PS00197	2Fe-2S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	58-66	2	B:57-65 N:57-65
4	4FE4S_FER_2	PS51379	4Fe-4S ferredoxin-type iron-sulfur binding domain profile.	FRDB_ECOLI	140-169	2	B:139-168 N:139-168
5	4FE4S_FER_1	PS00198	4Fe-4S ferredoxin-type iron-sulfur binding region signature.	FRDB_ECOLI	149-160	2	B:148-159 N:148-159

(no "Exon" information available for 1KF6)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:577
 aligned with FRDA_ECOLI | P00363 from UniProtKB/Swiss-Prot  Length:602

    Alignment length:577
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       
           FRDA_ECOLI     1 MQTFQADLAIVGAGGAGLRAAIAAAQANPNAKIALISKVYPMRSHTVAAEGGSAAVAQDHDSFEYHFHDTVAGGDWLCEQDVVDYFVHHCPTEMTQLELWGCPWSRRPDGSVNVRRFGGMKIERTWFAADKTGFHMLHTLFQTSLQFPQIQRFDEHFVLDILVDDGHVRGLVAMNMMEGTLVQIRANAVVMATGGAGRVYRYNTNGGIVTGDGMGMALSHGVPLRDMEFVQYHPTGLPGSGILMTEGCRGEGGILVNKNGYRYLQDYGMGPETPLGEPKNKYMELGPRDKVSQAFWHEWRKGNTISTPRGDVVYLDLRHLGEKKLHERLPFICELAKAYVGVDPVKEPIPVRPTAHYTMGGIETDQNCETRIKGLFAVGECSSVGLHGANRLGSNSLAELVVFGRLAGEQATERAATAGNGNEAAIEAQAAGVEQRLKDLVNQDGGENWAKIRDEMGLAMEEGCGIYRTPELMQKTIDKLAELQERFKRVRITDTSSVFNTDLLYTIELGHGLNVAECMAHSAMARKESRGAHQRLDEGCTERDDVNFLKHTLAFRDADGTTRLEYSDVKITTLPPA 577
               SCOP domains d1kf6a2 A:0-225,A:358-442 Fumarate reductase                                                                                                                                                                                      d1kf6a3 A:226-357 Fumarate reductase                                                                                                d1kf6a2 A:0-225,A:358-442 Fumarate reductase                                         d1kf6a1 A:443-576 Fumarate reductase                                                                                                   SCOP domains
               CATH domains 1kf6A01 A:0-235,A:352-421  [code=3.50.50.60, no name defined]                                                                                                                                                                               1kf6A02 A:236-351 Flavocytochrome C3; Chain A, domain 1                                                             1kf6A01 A:0-235,A:352-421  [code=3.50.50.60, no name defined]         1kf6A03 A:422-541  [code=1.20.58.100, no name defined]                                                                  1kf6A04 A:542-576                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeee..eeee..hhhhhhhhhhhhhhh....eeeee..hhhhhhhhhh...ee.......hhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhh........................ee....hhhhhhhhhhhhhhh....eeeee.eeeeeeeee..eeeeeeeee....eeeeee...eee....hhhhh..........hhhhhhhhh....ee....eeeeeee.........hhhhhh..eee.....hhhhhh..............hhhhhhhhhhhhhhhhhhhhh..........eeeehhhhhhhhhhhhhhhhhhhhhhhhh.......eeeeeeeeee..eee...........eee....ee..........hhhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhh...........hhhhhhhhhhhhhhhhhhhhhhhhhhh.......................eeeeeee.....eeeeeee......... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ------------------------------------------FRD_SDH_FA--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 A   0 MQTFQADLAIVGAGGAGLRAAIAAAQANPNAKIALISKVYPMRSHTVAAEGGSAAVAQDHDSFEYHFHDTVAGGDWLCEQDVVDYFVHHCPTEMTQLELWGCPWSRRPDGSVNVRRFGGMKIERTWFAADKTGFHMLHTLFQTSLQFPQIQRFDEHFVLDILVDDGHVRGLVAMNMMEGTLVQIRANAVVMATGGAGRVYRYNTNGGIVTGDGMGMALSHGVPLRDMEFVQYHPTGLPGSGILMTEGCRGEGGILVNKNGYRYLQDYGMGPETPLGEPKNKYMELGPRDKVSQAFWHEWRKGNTISTPRGDVVYLDLRHLGEKKLHERLPFICELAKAYVGVDPVKEPIPVRPTAHYTMGGIETDQNCETRIKGLFAVGECSSVGLHGANRLGSNSLAELVVFGRLAGEQATERAATAGNGNEAAIEAQAAGVEQRLKDLVNQDGGENWAKIRDEMGLAMEEGCGIYRTPELMQKTIDKLAELQERFKRVRITDTSSVFNTDLLYTIELGHGLNVAECMAHSAMARKESRGAHQRLDEGCTERDDVNFLKHTLAFRDADGTTRLEYSDVKITTLPPA 576
                                     9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379       389       399       409       419       429       439       449       459       469       479       489       499       509       519       529       539       549       559       569

Chain B from PDB  Type:PROTEIN  Length:243
 aligned with FRDB_ECOLI | P0AC47 from UniProtKB/Swiss-Prot  Length:244

    Alignment length:243
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241   
           FRDB_ECOLI     2 AEMKNLKIEVVRYNPEVDTAPHSAFYEVPYDATTSLLDALGYIKDNLAPDLSYRWSCRMAICGSCGMMVNNVPKLACKTFLRDYTDGMKVEALANFPIERDLVVDMTHFIESLEAIKPYIIGNSRTADQGTNIQTPAQMAKYHQFSGCINCGLCYAACPQFGLNPEFIGPAAITLAHRYNEDSRDHGKKERMAQLNSQNGVWSCTFVGYCSEVCPKHVDPAAAIQQGKVESSKDFLIATLKPR 244
               SCOP domains d1kf6b2 B:1-105 Fumarate reductase iron-sulfur protein, N-terminal domain                                d1kf6b1 B:106-243 Fumarate reductase                                                                                                       SCOP domains
               CATH domains -1kf6B01 B:2-105  [code=3.10.20.30, no name defined]                                                     1kf6B02 B:106-243 Fumarate Reductase Iron-sulfur Protein; Chain B, domain 2                                                                CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeeeeeeee.........eeeeeeeee....hhhhhhhhhhhhh..................eeee..eeee.hhhhhhhh...eeeee.....eee..ee.hhhhhhhhhhh.........hhhhh....hhhhhhhhhhhhh....hhhhhhhhhhhhh....hhhhhhhhhhhhh......hhhhhhhhhh..hhhhh...hhhhhhh....hhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) --------------2FE2S_FER_2  PDB: B:15-96 UniProt: 16-97                                          ------------------------------------------4FE4S_FER_2  PDB: B:139-168   --------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) --------------------------------------------------------2FE2S_FER----------------------------------------------------------------------------------4FE4S_FER_1 ------------------------------------------------------------------------------------ PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 B   1 AEMKNLKIEVVRYNPEVDTAPHSAFYEVPYDATTSLLDALGYIKDNLAPDLSYRWSCRMAICGSCGMMVNNVPKLACKTFLRDYTDGMKVEALANFPIERDLVVDMTHFIESLEAIKPYIIGNSRTADQGTNIQTPAQMAKYHQFSGCINCGLCYAACPQFGLNPEFIGPAAITLAHRYNEDSRDHGKKERMAQLNSQNGVWSCTFVGYCSEVCPKHVDPAAAIQQGKVESSKDFLIATLKPR 243
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240

Chain C from PDB  Type:PROTEIN  Length:130
 aligned with FRDC_ECOLI | P0A8Q0 from UniProtKB/Swiss-Prot  Length:131

    Alignment length:130
                                    11        21        31        41        51        61        71        81        91       101       111       121       131
           FRDC_ECOLI     2 TTKRKPYVRPMTSTWWKKLPFYRFYMLREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNPVIVIINLITLAAALLHTKTWFELAPKAANIIVKDEKMGPEPIIKSLWAVTVVATIVILFVALYW 131
               SCOP domains d1kf6c_ C: Fumarate reductase subunit FrdC                                                                                         SCOP domains
               CATH domains 1kf6C00 C:1-130 Fumarate reductase respiratory complex transmembrane subunits                                                      CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .............hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 C   1 TTKRKPYVRPMTSTWWKKLPFYRFYMLREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNPVIVIINLITLAAALLHTKTWFELAPKAANIIVKDEKMGPEPIIKSLWAVTVVATIVILFVALYW 130
                                    10        20        30        40        50        60        70        80        90       100       110       120       130

Chain D from PDB  Type:PROTEIN  Length:119
 aligned with FRDD_ECOLI | P0A8Q3 from UniProtKB/Swiss-Prot  Length:119

    Alignment length:119
                                    10        20        30        40        50        60        70        80        90       100       110         
           FRDD_ECOLI     1 MINPNPKRSDEPVFWGLFGAGGMWSAIIAPVMILLVGILLPLGLFPGDALSYERVLAFAQSFIGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVPAGKWVFYGLAAILTVVTLIGVVTI 119
               SCOP domains d1kf6d_ D: Fumarate reductase subunit FrdD                                                                              SCOP domains
               CATH domains 1kf6D00 D:0-118 Fumarate reductase respiratory complex transmembrane subunits                                           CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 D   0 MINPNPKRSDEPVFWGLFGAGGMWSAIIAPVMILLVGILLPLGLFPGDALSYERVLAFAQSFIGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVPAGKWVFYGLAAILTVVTLIGVVTI 118
                                     9        19        29        39        49        59        69        79        89        99       109

Chain M from PDB  Type:PROTEIN  Length:577
 aligned with FRDA_ECOLI | P00363 from UniProtKB/Swiss-Prot  Length:602

    Alignment length:577
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360       370       380       390       400       410       420       430       440       450       460       470       480       490       500       510       520       530       540       550       560       570       
           FRDA_ECOLI     1 MQTFQADLAIVGAGGAGLRAAIAAAQANPNAKIALISKVYPMRSHTVAAEGGSAAVAQDHDSFEYHFHDTVAGGDWLCEQDVVDYFVHHCPTEMTQLELWGCPWSRRPDGSVNVRRFGGMKIERTWFAADKTGFHMLHTLFQTSLQFPQIQRFDEHFVLDILVDDGHVRGLVAMNMMEGTLVQIRANAVVMATGGAGRVYRYNTNGGIVTGDGMGMALSHGVPLRDMEFVQYHPTGLPGSGILMTEGCRGEGGILVNKNGYRYLQDYGMGPETPLGEPKNKYMELGPRDKVSQAFWHEWRKGNTISTPRGDVVYLDLRHLGEKKLHERLPFICELAKAYVGVDPVKEPIPVRPTAHYTMGGIETDQNCETRIKGLFAVGECSSVGLHGANRLGSNSLAELVVFGRLAGEQATERAATAGNGNEAAIEAQAAGVEQRLKDLVNQDGGENWAKIRDEMGLAMEEGCGIYRTPELMQKTIDKLAELQERFKRVRITDTSSVFNTDLLYTIELGHGLNVAECMAHSAMARKESRGAHQRLDEGCTERDDVNFLKHTLAFRDADGTTRLEYSDVKITTLPPA 577
               SCOP domains d1kf6m2 M:0-225,M:358-442 Fumarate reductase                                                                                                                                                                                      d1kf6m3 M:226-357 Fumarate reductase                                                                                                d1kf6m2 M:0-225,M:358-442 Fumarate reductase                                         d1kf6m1 M:443-576 Fumarate reductase                                                                                                   SCOP domains
               CATH domains 1kf6M01 M:0-235,M:352-421  [code=3.50.50.60, no name defined]                                                                                                                                                                               1kf6M02 M:236-351 Flavocytochrome C3; Chain A, domain 1                                                             1kf6M01 M:0-235,M:352-421  [code=3.50.50.60, no name defined]         1kf6M03 M:422-541  [code=1.20.58.100, no name defined]                                                                  1kf6M04 M:542-576                   CATH domains
           Pfam domains (1) ------FAD_binding_2-1kf6M01 M:6-396                                                                                                                                                                                                                                                                                                                                                                          -------------------------------------------------------Succ_DH_flav_C-1kf6M03 M:452-576                                                                                              Pfam domains (1)
           Pfam domains (2) ------FAD_binding_2-1kf6M02 M:6-396                                                                                                                                                                                                                                                                                                                                                                          -------------------------------------------------------Succ_DH_flav_C-1kf6M04 M:452-576                                                                                              Pfam domains (2)
         Sec.struct. author ...ee...eee..hhhhhhhhhhhhhhh.......ee..hhhhhhhhhh...ee.......hhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhh.............ee.........ee.hhhhhhhhhhhhhhhhhhhh.....ee.....eeee....eeeeeeee....eeeeee...eee....hhhhh..........hhhhhhhhhh...ee....eeeeeee.........hhhhhh..eee.....hhhhhhh.............hhhhhhhhhhhhhhhhhhhhh..eee..eeeeeee....hhhhhhhhhhhhhhhhhhhh........eeeeeeeeee..ee............eee.hhhh............hhhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhh...........hhhhhhhhhhhhhhhhhhhhhhhhhhh.......................eeeeeee.....eeeeeee......... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) ------------------------------------------FRD_SDH_FA--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE (2)
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 M   0 MQTFQADLAIVGAGGAGLRAAIAAAQANPNAKIALISKVYPMRSHTVAAEGGSAAVAQDHDSFEYHFHDTVAGGDWLCEQDVVDYFVHHCPTEMTQLELWGCPWSRRPDGSVNVRRFGGMKIERTWFAADKTGFHMLHTLFQTSLQFPQIQRFDEHFVLDILVDDGHVRGLVAMNMMEGTLVQIRANAVVMATGGAGRVYRYNTNGGIVTGDGMGMALSHGVPLRDMEFVQYHPTGLPGSGILMTEGCRGEGGILVNKNGYRYLQDYGMGPETPLGEPKNKYMELGPRDKVSQAFWHEWRKGNTISTPRGDVVYLDLRHLGEKKLHERLPFICELAKAYVGVDPVKEPIPVRPTAHYTMGGIETDQNCETRIKGLFAVGECSSVGLHGANRLGSNSLAELVVFGRLAGEQATERAATAGNGNEAAIEAQAAGVEQRLKDLVNQDGGENWAKIRDEMGLAMEEGCGIYRTPELMQKTIDKLAELQERFKRVRITDTSSVFNTDLLYTIELGHGLNVAECMAHSAMARKESRGAHQRLDEGCTERDDVNFLKHTLAFRDADGTTRLEYSDVKITTLPPA 576
                                     9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159       169       179       189       199       209       219       229       239       249       259       269       279       289       299       309       319       329       339       349       359       369       379       389       399       409       419       429       439       449       459       469       479       489       499       509       519       529       539       549       559       569

Chain N from PDB  Type:PROTEIN  Length:243
 aligned with FRDB_ECOLI | P0AC47 from UniProtKB/Swiss-Prot  Length:244

    Alignment length:243
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241   
           FRDB_ECOLI     2 AEMKNLKIEVVRYNPEVDTAPHSAFYEVPYDATTSLLDALGYIKDNLAPDLSYRWSCRMAICGSCGMMVNNVPKLACKTFLRDYTDGMKVEALANFPIERDLVVDMTHFIESLEAIKPYIIGNSRTADQGTNIQTPAQMAKYHQFSGCINCGLCYAACPQFGLNPEFIGPAAITLAHRYNEDSRDHGKKERMAQLNSQNGVWSCTFVGYCSEVCPKHVDPAAAIQQGKVESSKDFLIATLKPR 244
               SCOP domains d1kf6n2 N:1-105 Fumarate reductase iron-sulfur protein, N-terminal domain                                d1kf6n1 N:106-243 Fumarate reductase                                                                                                       SCOP domains
               CATH domains -1kf6N01 N:2-105  [code=3.10.20.30, no name defined]                                                     1kf6N02 N:106-243 Fumarate Reductase Iron-sulfur Protein; Chain B, domain 2                                                                CATH domains
           Pfam domains (1) ------Fer2_3-1kf6N03 N:7-111                                                                                   --------------------------------Fer4_8-1kf6N01 N:144-218                                                   ------------------------- Pfam domains (1)
           Pfam domains (2) ------Fer2_3-1kf6N04 N:7-111                                                                                   --------------------------------Fer4_8-1kf6N02 N:144-218                                                   ------------------------- Pfam domains (2)
         Sec.struct. author ...eeeeeeeee.........eeeeeeeee....hhhhhhhhhhhhh..................eeee..eeee.hhhhhhhh...eeeee.....eee..ee.hhhhhhhhhhh.........hhhhh....hhhhhhhhhhhhhh...hhhhhhhhhhhhh....hhhhhhhhhhhhh......hhhhhhhhh...hhhhh...hhhhhhh....hhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) --------------2FE2S_FER_2  PDB: N:15-96 UniProt: 16-97                                          ------------------------------------------4FE4S_FER_2  PDB: N:139-168   --------------------------------------------------------------------------- PROSITE (1)
                PROSITE (2) --------------------------------------------------------2FE2S_FER----------------------------------------------------------------------------------4FE4S_FER_1 ------------------------------------------------------------------------------------ PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 N   1 AEMKNLKIEVVRYNPEVDTAPHSAFYEVPYDATTSLLDALGYIKDNLAPDLSYRWSCRMAICGSCGMMVNNVPKLACKTFLRDYTDGMKVEALANFPIERDLVVDMTHFIESLEAIKPYIIGNSRTADQGTNIQTPAQMAKYHQFSGCINCGLCYAACPQFGLNPEFIGPAAITLAHRYNEDSRDHGKKERMAQLNSQNGVWSCTFVGYCSEVCPKHVDPAAAIQQGKVESSKDFLIATLKPR 243
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240

Chain O from PDB  Type:PROTEIN  Length:130
 aligned with FRDC_ECOLI | P0A8Q0 from UniProtKB/Swiss-Prot  Length:131

    Alignment length:130
                                    11        21        31        41        51        61        71        81        91       101       111       121       131
           FRDC_ECOLI     2 TTKRKPYVRPMTSTWWKKLPFYRFYMLREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNPVIVIINLITLAAALLHTKTWFELAPKAANIIVKDEKMGPEPIIKSLWAVTVVATIVILFVALYW 131
               SCOP domains d1kf6o_ O: Fumarate reductase subunit FrdC                                                                                         SCOP domains
               CATH domains 1kf6O00 O:1-130 Fumarate reductase respiratory complex transmembrane subunits                                                      CATH domains
           Pfam domains (1) Fumarate_red_C-1kf6O01 O:1-129                                                                                                   - Pfam domains (1)
           Pfam domains (2) Fumarate_red_C-1kf6O02 O:1-129                                                                                                   - Pfam domains (2)
         Sec.struct. author ..................hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..ee..ee..hhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 O   1 TTKRKPYVRPMTSTWWKKLPFYRFYMLREGTAVPAVWFSIELIFGLFALKNGPEAWAGFVDFLQNPVIVIINLITLAAALLHTKTWFELAPKAANIIVKDEKMGPEPIIKSLWAVTVVATIVILFVALYW 130
                                    10        20        30        40        50        60        70        80        90       100       110       120       130

Chain P from PDB  Type:PROTEIN  Length:119
 aligned with FRDD_ECOLI | P0A8Q3 from UniProtKB/Swiss-Prot  Length:119

    Alignment length:119
                                    10        20        30        40        50        60        70        80        90       100       110         
           FRDD_ECOLI     1 MINPNPKRSDEPVFWGLFGAGGMWSAIIAPVMILLVGILLPLGLFPGDALSYERVLAFAQSFIGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVPAGKWVFYGLAAILTVVTLIGVVTI 119
               SCOP domains d1kf6p_ P: Fumarate reductase subunit FrdD                                                                              SCOP domains
               CATH domains 1kf6P00 P:0-118 Fumarate reductase respiratory complex transmembrane subunits                                           CATH domains
           Pfam domains (1) -Fumarate_red_D-1kf6P01 P:1-117                                                                                       - Pfam domains (1)
           Pfam domains (2) -Fumarate_red_D-1kf6P02 P:1-117                                                                                       - Pfam domains (2)
         Sec.struct. author .........hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------- Transcript
                 1kf6 P   0 MINPNPKRSDEPVFWGLFGAGGMWSAIIAPVMILLVGILLPLGLFPGDALSYERVLAFAQSFIGRVFLFLMIVLPLWCGLHRMHHAMHDLKIHVPAGKWVFYGLAAILTVVTLIGVVTI 118
                                     9        19        29        39        49        59        69        79        89        99       109

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit(hide GO term definitions)

Chain A,M (FRDA_ECOLI | P00363)

molecular function
	GO:0071949	FAD binding	Interacting selectively and non-covalently with the oxidized form, FAD, of flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes.
	GO:0009055	electron carrier activity	Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
	GO:0050660	flavin adenine dinucleotide binding	Interacting selectively and non-covalently with FAD, flavin-adenine dinucleotide, the coenzyme or the prosthetic group of various flavoprotein oxidoreductase enzymes, in either the oxidized form, FAD, or the reduced form, FADH2.
	GO:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
	GO:0016627	oxidoreductase activity, acting on the CH-CH group of donors	Catalysis of an oxidation-reduction (redox) reaction in which a CH-CH group acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0000104	succinate dehydrogenase activity	Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
	GO:0009061	anaerobic respiration	The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
	GO:0044780	bacterial-type flagellum assembly	The assembly of a bacterial-type flagellum, a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope which functions in cell motility.
	GO:0071973	bacterial-type flagellum-dependent cell motility	Cell motility due to the motion of one or more bacterial-type flagella. A bacterial-type flagellum is a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope.
	GO:0006974	cellular response to DNA damage stimulus	Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
	GO:0022900	electron transport chain	A process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
	GO:0006113	fermentation	The anaerobic enzymatic conversion of organic compounds, especially carbohydrates, coupling the oxidation and reduction of NAD/H and the generation of adenosine triphosphate (ATP).
	GO:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
cellular component
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0045284	plasma membrane fumarate reductase complex	A membrane-bound flavoenzyme complex consisting of four subunits, A, B, C, and D. A and B comprise the membrane-extrinsic catalytic domain and C (InterPro:IPR003510; InterPro:IPR00224) and D (InterPro:IPR003418) link the catalytic centers to the electron-transport chain. In some species, the complex has only three subunits, and in these cases, there is only one membrane anchor instead of two. This family consists of the 13 kDa hydrophobic subunit D. This component may be required to anchor the catalytic components of the fumarate reductase complex to the cytoplasmic membrane. Fumarate reductase couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, in a reaction opposite to that catalyzed by the related complex II of the respiratory chain (succinate dehydrogenase-(ubiquinone)). Examples of this component are found in bacterial species.

Chain B,N (FRDB_ECOLI | P0AC47)

molecular function
	GO:0051537	2 iron, 2 sulfur cluster binding	Interacting selectively and non-covalently with a 2 iron, 2 sulfur (2Fe-2S) cluster; this cluster consists of two iron atoms, with two inorganic sulfur atoms found between the irons and acting as bridging ligands.
	GO:0051538	3 iron, 4 sulfur cluster binding	Interacting selectively and non-covalently with a 3 iron, 4 sulfur (3Fe-4S) cluster; this cluster consists of three iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands. It is essentially a 4Fe-4S cluster with one iron missing.
	GO:0051539	4 iron, 4 sulfur cluster binding	Interacting selectively and non-covalently with a 4 iron, 4 sulfur (4Fe-4S) cluster; this cluster consists of four iron atoms, with the inorganic sulfur atoms found between the irons and acting as bridging ligands.
	GO:0009055	electron carrier activity	Any molecular entity that serves as an electron acceptor and electron donor in an electron transport chain. An electron transport chain is a process in which a series of electron carriers operate together to transfer electrons from donors to any of several different terminal electron acceptors to generate a transmembrane electrochemical gradient.
	GO:0051536	iron-sulfur cluster binding	Interacting selectively and non-covalently with an iron-sulfur cluster, a combination of iron and sulfur atoms.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0016491	oxidoreductase activity	Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0008177	succinate dehydrogenase (ubiquinone) activity	Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
	GO:0000104	succinate dehydrogenase activity	Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
	GO:0009061	anaerobic respiration	The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
	GO:0044780	bacterial-type flagellum assembly	The assembly of a bacterial-type flagellum, a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope which functions in cell motility.
	GO:0071973	bacterial-type flagellum-dependent cell motility	Cell motility due to the motion of one or more bacterial-type flagella. A bacterial-type flagellum is a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope.
	GO:0006113	fermentation	The anaerobic enzymatic conversion of organic compounds, especially carbohydrates, coupling the oxidation and reduction of NAD/H and the generation of adenosine triphosphate (ATP).
	GO:0055114	oxidation-reduction process	A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
	GO:0006099	tricarboxylic acid cycle	A nearly universal metabolic pathway in which the acetyl group of acetyl coenzyme A is effectively oxidized to two CO2 and four pairs of electrons are transferred to coenzymes. The acetyl group combines with oxaloacetate to form citrate, which undergoes successive transformations to isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, and oxaloacetate again, thus completing the cycle. In eukaryotes the tricarboxylic acid is confined to the mitochondria. See also glyoxylate cycle.
cellular component
	GO:0005829	cytosol	The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0045284	plasma membrane fumarate reductase complex	A membrane-bound flavoenzyme complex consisting of four subunits, A, B, C, and D. A and B comprise the membrane-extrinsic catalytic domain and C (InterPro:IPR003510; InterPro:IPR00224) and D (InterPro:IPR003418) link the catalytic centers to the electron-transport chain. In some species, the complex has only three subunits, and in these cases, there is only one membrane anchor instead of two. This family consists of the 13 kDa hydrophobic subunit D. This component may be required to anchor the catalytic components of the fumarate reductase complex to the cytoplasmic membrane. Fumarate reductase couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, in a reaction opposite to that catalyzed by the related complex II of the respiratory chain (succinate dehydrogenase-(ubiquinone)). Examples of this component are found in bacterial species.

Chain C,O (FRDC_ECOLI | P0A8Q0)

molecular function
	GO:0008177	succinate dehydrogenase (ubiquinone) activity	Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
	GO:0000104	succinate dehydrogenase activity	Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
	GO:0009061	anaerobic respiration	The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
	GO:0044780	bacterial-type flagellum assembly	The assembly of a bacterial-type flagellum, a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope which functions in cell motility.
	GO:0071973	bacterial-type flagellum-dependent cell motility	Cell motility due to the motion of one or more bacterial-type flagella. A bacterial-type flagellum is a motor complex composed of an extracellular helical protein filament coupled to a rotary motor embedded in the cell envelope.
	GO:0006113	fermentation	The anaerobic enzymatic conversion of organic compounds, especially carbohydrates, coupling the oxidation and reduction of NAD/H and the generation of adenosine triphosphate (ATP).
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
	GO:0045284	plasma membrane fumarate reductase complex	A membrane-bound flavoenzyme complex consisting of four subunits, A, B, C, and D. A and B comprise the membrane-extrinsic catalytic domain and C (InterPro:IPR003510; InterPro:IPR00224) and D (InterPro:IPR003418) link the catalytic centers to the electron-transport chain. In some species, the complex has only three subunits, and in these cases, there is only one membrane anchor instead of two. This family consists of the 13 kDa hydrophobic subunit D. This component may be required to anchor the catalytic components of the fumarate reductase complex to the cytoplasmic membrane. Fumarate reductase couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, in a reaction opposite to that catalyzed by the related complex II of the respiratory chain (succinate dehydrogenase-(ubiquinone)). Examples of this component are found in bacterial species.

Chain D,P (FRDD_ECOLI | P0A8Q3)

molecular function
	GO:0008177	succinate dehydrogenase (ubiquinone) activity	Catalysis of the reaction: succinate + ubiquinone = fumarate + ubiquinol.
	GO:0000104	succinate dehydrogenase activity	Catalysis of the reaction: succinate + acceptor = fumarate + reduced acceptor.
biological process
	GO:0009061	anaerobic respiration	The enzymatic release of energy from inorganic and organic compounds (especially carbohydrates and fats) which uses compounds other than oxygen (e.g. nitrate, sulfate) as the terminal electron acceptor.
	GO:0006113	fermentation	The anaerobic enzymatic conversion of organic compounds, especially carbohydrates, coupling the oxidation and reduction of NAD/H and the generation of adenosine triphosphate (ATP).
	GO:0006106	fumarate metabolic process	The chemical reactions and pathways involving fumarate, the anion of trans-1,2-ethenedicarboxylic acid, the diastereoisomer of maleate. It is a key intermediate in metabolism and is formed in the TCA cycle from succinate and converted into malate.
cellular component
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
	GO:0045284	plasma membrane fumarate reductase complex	A membrane-bound flavoenzyme complex consisting of four subunits, A, B, C, and D. A and B comprise the membrane-extrinsic catalytic domain and C (InterPro:IPR003510; InterPro:IPR00224) and D (InterPro:IPR003418) link the catalytic centers to the electron-transport chain. In some species, the complex has only three subunits, and in these cases, there is only one membrane anchor instead of two. This family consists of the 13 kDa hydrophobic subunit D. This component may be required to anchor the catalytic components of the fumarate reductase complex to the cytoplasmic membrane. Fumarate reductase couples the reduction of fumarate to succinate to the oxidation of quinol to quinone, in a reaction opposite to that catalyzed by the related complex II of the respiratory chain (succinate dehydrogenase-(ubiquinone)). Examples of this component are found in bacterial species.

Asymmetric Unit
	Complete Structure
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	Ligands, Modified Residues, Ions
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	Cis Peptide Bonds
		Gly A:269 - Pro A:270	[ RasMol ]
		Gly C:104 - Pro C:105	[ RasMol ]
		Gly M:269 - Pro M:270	[ RasMol ]

Biological Units
	Complete Structure
		Biological Unit 1	[ Jena3D ]
		Biological Unit 2	[ Jena3D ]
		Biological Unit 3	[ Jena3D ]

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	1.3.99.1
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1fum	E. COLI QUINOL-FUMARATE REDUCTASE

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (10, 23)

Sites (23, 23)

SS Bonds (0, 0)

Cis Peptide Bonds (3, 3)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (5, 10)

Exons (0, 0)

Sequences/Alignments

Classification and Annotation

SCOP Domains (7, 14)

CATH Domains (7, 16)

Pfam Domains (6, 12)

Gene Ontology (28, 56)

Visualization

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Databases

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File