1XCB - 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)

Biological Unit 4 (Jmol Viewer)

Biological Unit 5 (Jmol Viewer)

Title :   X-RAY STRUCTURE OF A REX-FAMILY REPRESSOR/NADH COMPLEX FROM THERMUS AQUATICUS

Authors :   E. A. Sickmier, D. Brekasis, S. Paranawithana, J. B. Bonanno, S. K. Burley, M. S. Paget, C. L. Kielkopf, New York Sgx Research Center For Structural Genomics (Nysgxrc)

Date :   01 Sep 04 (Deposition) - 28 Sep 04 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.90

Chains :   Asym. Unit : A,B,C,D,E,F,G
Biol. Unit 1: A,B  (1x)
Biol. Unit 2: C,D  (1x)
Biol. Unit 3: E,F  (1x)
Biol. Unit 4: G  (2x)
Biol. Unit 5: A (2x),B (2x),C (2x),D (2x),E (2x),F (2x),G (2x)

Keywords :   Redox-Sensing, Winged Helix, Rossmann Fold, Nicotinamide Adenine Dinucleotide, Nad, Rex, Thermus Aquaticus, New York Sgx Research Center For Structural Genomics, Nysgxrc, Structural Genomics, Psi, Protein Structure Initiative, Dna Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   E. A. Sickmier, D. Brekasis, S. Paranawithana, J. B. Bonanno, M. S. Paget, S. K. Burley, C. L. Kielkopf
X-Ray Structure Of A Rex-Family Repressor/Nadh Complex: Insights Into The Mechanism Of Redox Sensing
Structure V. 13 43 2005
PubMed-ID: 15642260 | Reference-DOI: 10.1016/J.STR.2004.10.012
(for further references see the PDB file header)

Molecule 1 - REDOX-SENSING TRANSCRIPTIONAL REPRESSOR REX
	Chains	:	A, B, C, D, E, F, G
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Gene	:	REX
	Organism Scientific	:	THERMUS AQUATICUS
	Organism Taxid	:	271
	Synonym	:	T-REX

		1	2	3	4	5	6	7
Asymmetric Unit	:	A	B	C	D	E	F	G
Biological Unit 1 (1x)	:	A	B
Biological Unit 2 (1x)	:			C	D
Biological Unit 3 (1x)	:					E	F
Biological Unit 4 (2x)	:							G
Biological Unit 5 (2x)	:	A (2x)	B (2x)	C (2x)	D (2x)	E (2x)	F (2x)	G (2x)

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 20)

No.	Name	Count	Type	Full Name
1	CA	5	Ligand/Ion	CALCIUM ION
2	MSE	8	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	7	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 1 (2, 4)

No.	Name	Count	Type	Full Name
1	CA	-1	Ligand/Ion	CALCIUM ION
2	MSE	2	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	2	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 2 (2, 4)

No.	Name	Count	Type	Full Name
1	CA	-1	Ligand/Ion	CALCIUM ION
2	MSE	2	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	2	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 3 (2, 5)

No.	Name	Count	Type	Full Name
1	CA	-1	Ligand/Ion	CALCIUM ION
2	MSE	3	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	2	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 4 (2, 4)

No.	Name	Count	Type	Full Name
1	CA	-1	Ligand/Ion	CALCIUM ION
2	MSE	2	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	2	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Biological Unit 5 (0, 0)

No.	Name	Count	Type	Full Name
1	CA	-1	Ligand/Ion	CALCIUM ION
2	MSE	-1	Mod. Amino Acid	SELENOMETHIONINE
3	NAD	-1	Ligand/Ion	NICOTINAMIDE-ADENINE-DINUCLEOTIDE

Asymmetric Unit (10, 10)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	GLY B:139 , GLY G:139	BINDING SITE FOR RESIDUE CA B 212
02	AC2	SOFTWARE	GLY D:139 , GLY E:139	BINDING SITE FOR RESIDUE CA D 212
03	AC3	SOFTWARE	VAL D:187 , ASP D:188	BINDING SITE FOR RESIDUE CA D 213
04	AC4	SOFTWARE	VAL A:86 , GLY A:87 , MSE A:88 , GLY A:89 , ARG A:90 , LEU A:91 , ASP A:112 , VAL A:113 , ASP A:114 , LYS A:117 , THR A:147 , VAL A:148 , PRO A:149 , ALA A:152 , ALA A:156 , PHE A:171 , ALA A:172 , PRO A:173 , VAL A:187 , PHE A:189 , HIS B:27 , ALA B:94 , TYR B:98	BINDING SITE FOR RESIDUE NAD A 213
05	AC5	SOFTWARE	ALA A:94 , TYR A:98 , PHE A:189 , VAL B:86 , GLY B:87 , MSE B:88 , GLY B:89 , ARG B:90 , LEU B:91 , ASP B:112 , VAL B:113 , LYS B:117 , THR B:147 , VAL B:148 , PRO B:149 , ARG B:150 , ALA B:152 , PHE B:171 , PRO B:173 , VAL B:187 , PHE B:189	BINDING SITE FOR RESIDUE NAD B 213
06	AC6	SOFTWARE	GLY C:87 , MSE C:88 , GLY C:89 , ARG C:90 , LEU C:91 , ASP C:112 , VAL C:113 , ASP C:114 , LYS C:117 , THR C:147 , VAL C:148 , PRO C:149 , ARG C:150 , PHE C:171 , ALA C:172 , PRO C:173 , VAL C:187 , PHE C:189 , ALA D:94 , TYR D:98	BINDING SITE FOR RESIDUE NAD C 213
07	AC7	SOFTWARE	ALA C:94 , TYR C:98 , PHE C:189 , VAL D:86 , GLY D:87 , MSE D:88 , GLY D:89 , ARG D:90 , LEU D:91 , ASP D:112 , VAL D:113 , ASP D:114 , LYS D:117 , VAL D:130 , THR D:147 , VAL D:148 , PRO D:149 , ARG D:150 , PHE D:171 , ALA D:172 , PRO D:173 , VAL D:187 , ASP D:188 , PHE D:189	BINDING SITE FOR RESIDUE NAD D 214
08	AC8	SOFTWARE	PHE A:43 , ARG A:46 , GLY E:87 , MSE E:88 , GLY E:89 , ARG E:90 , LEU E:91 , ASP E:112 , VAL E:113 , ASP E:114 , LYS E:117 , THR E:147 , VAL E:148 , PRO E:149 , ARG E:150 , ALA E:152 , PHE E:171 , ALA E:172 , PRO E:173 , VAL E:187 , PHE E:189 , ALA F:94 , TYR F:98	BINDING SITE FOR RESIDUE NAD E 212
09	AC9	SOFTWARE	ALA E:94 , TYR E:98 , VAL F:86 , MSE F:88 , GLY F:89 , ARG F:90 , LEU F:91 , ASP F:112 , VAL F:113 , ASP F:114 , LYS F:117 , VAL F:130 , THR F:147 , VAL F:148 , PRO F:149 , ARG F:150 , ALA F:152 , PHE F:171 , PRO F:173 , VAL F:187 , ASP F:188 , PHE F:189	BINDING SITE FOR RESIDUE NAD F 212
10	BC1	SOFTWARE	PHE C:43 , ARG C:46 , GLY G:87 , MSE G:88 , GLY G:89 , ARG G:90 , LEU G:91 , ALA G:94 , TYR G:98 , ASP G:112 , VAL G:113 , ASP G:114 , LYS G:117 , VAL G:130 , VAL G:148 , PRO G:149 , ALA G:152 , PHE G:171 , ALA G:172 , PRO G:173 , VAL G:187 , PHE G:189	BINDING SITE FOR RESIDUE NAD G 212

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

(no "Cis Peptide Bond" information available for 1XCB)

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

(no "PROSITE Motif" information available for 1XCB)

(no "Exon" information available for 1XCB)

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:205
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:205
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201     
            REX_THEAQ     2 KVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWR 206
               SCOP domains --d1xcba1 A:4-77 Transcriptional repressor Rex, N-terminal domain           d1xcba2 A:78-203 Transcriptional repressor Rex, C-terminal domain                                                             --- SCOP domains
               CATH domains 1xcbA01 A:2-73 'winged helix' repressor DNA binding domain              1xcbA02 A:74-206 NAD(P)-binding Rossmann-like Domain                                                                                  CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhh.....eehhhhhhhhhh.hhhhhhhhhhh..........eehhhhhhhhhhhh.....eeeeee..hhhhhhhh........eeeeeee...............ee...hhhhh......eeee..hhhhhhhhhhhhhhh...eeee............eeee.....hhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb A   2 KVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWR 206
                                    11        21        31        41        51        61        71        81      | 91       101       111       121       131       141       151       161       171       181       191       201     
                                                                                                                 88-MSE

Chain B from PDB  Type:PROTEIN  Length:197
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:203
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203   
            REX_THEAQ     4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWR 206
               SCOP domains d1xcbb1 B:4-77 Transcriptional repressor Rex, N-ter      minal domain     d1xcbb2 B:78-203 Transcriptional repressor Rex, C-terminal domain                                                             --- SCOP domains
               CATH domains 1xcbB01 B:4-73 'winged helix' repressor DNA binding       domain      1xcbB02 B:74-206 NAD(P)-binding Rossmann-like Domain                                                                                  CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhh...eehhhhhhhhh..hhhhhhhhhhhh..------.eehhhhhhhhhhhhh....eeeeee..hhhhhhhhh.......eeeeeee....................hhhhhh.....eeee......hhhhhhhhhhh...eeee............eeee..hhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb B   4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGS------GYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWR 206
                                    13        23        33        43        53|      |63        73        83    |   93       103       113       123       133       143       153       163       173       183       193       203   
                                                                             54     61                         88-MSE

Chain C from PDB  Type:PROTEIN  Length:203
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:203
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201   
            REX_THEAQ     2 KVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPK 204
               SCOP domains --d1xcbc1 C:4-77 Transcriptional repressor Rex, N-terminal domain           d1xcbc2 C:78-203 Transcriptional repressor Rex, C-terminal domain                                                             - SCOP domains
               CATH domains 1xcbC01 C:2-73 'winged helix' repressor DNA binding domain              1xcbC02 C:74-204 NAD(P)-binding Rossmann-like Domain                                                                                CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhh....eehhhhhhhhhh.hhhhhhhhhhh..........eehhhhhhhhhhhhh....eeeeee..hhhhhhhhhh......eeeeeeee..............eee..hhhhhh.....eeee..hhhhhhhhhhhhhh....eeee............eeee....hhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb C   2 KVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPK 204
                                    11        21        31        41        51        61        71        81      | 91       101       111       121       131       141       151       161       171       181       191       201   
                                                                                                                 88-MSE

Chain D from PDB  Type:PROTEIN  Length:197
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:202
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203  
            REX_THEAQ     4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKW 205
               SCOP domains d1xcbd1 D:4-77 Transcriptional repressor Rex, N-term     inal domain      d1xcbd2 D:78-203 Transcriptional repressor Rex, C-terminal domain                                                             -- SCOP domains
               CATH domains 1xcbD01 D:4-73 'winged helix' repressor DNA binding      domain       1xcbD02 D:74-205 NAD(P)-binding Rossmann-like Domain                                                                                 CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhh......eehhhhhhhhhh.hhhhhhhhhhh....-----.eehhhhhhhhhhhh.....eeeeee..hhhhhhhhhh......eeeeeeee..............eee..hhhhhh.....eeee..hhhhhhhhhhhhhhh...eeee............eeee..hhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb D   4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSY-----GYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKW 205
                                    13        23        33        43        53 |     |63        73        83    |   93       103       113       123       133       143       153       163       173       183       193       203  
                                                                              55    61                         88-MSE

Chain E from PDB  Type:PROTEIN  Length:203
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:203
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200   
            REX_THEAQ     1 MKVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNP 203
               SCOP domains ---d1xcbe1 E:4-77 Transcriptional repressor Rex, N-terminal domain           d1xcbe2 E:78-203 Transcriptional repressor Rex, C-terminal domain                                                              SCOP domains
               CATH domains -1xcbE01 E:2-73 'winged helix' repressor DNA binding domain              1xcbE02 E:74-203 NAD(P)-binding Rossmann-like Domain                                                                               CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhhhhhh....eehhhhhhhhhh.hhhhhhhhhhhh.........eehhhhhhhhhhhh.....eeeeee..hhhhhhhhhh......eeeeeee....................hhhhhh.....eeee..hhhhhhhhhhhhhhh...eeee............eeee....hhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb E   1 mKVPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNP 203
                            |       10        20        30        40        50        60        70        80       |90       100       110       120       130       140       150       160       170       180       190       200   
                            1-MSE                                                                                 88-MSE

Chain F from PDB  Type:PROTEIN  Length:200
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:205
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202     
            REX_THEAQ     3 VPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWRE 207
               SCOP domains -d1xcbf1 F:4-77 Transcriptional repressor Rex, N-term     inal domain      d1xcbf2 F:78-203 Transcriptional repressor Rex, C-terminal domain                                                             ---- SCOP domains
               CATH domains 1xcbF01 F:3-73 'winged helix' repressor DNA binding d     omain        1xcbF02 F:74-207 NAD(P)-binding Rossmann-like Domain                                                                                   CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhh......hhhhhhhhhh.hhhhhhhhhhh....-----..hhhhhhhhhhhhh.....eeeeee..hhhhhhhh........eeeeeeee...............ee..hhhhhhhhhh.eeee..hhhhhhhhhhhhh.....eeee............eeee..hhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb F   3 VPEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSY-----GYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNPKWRE 207
                                    12        22        32        42        52  |     62        72        82     |  92       102       112       122       132       142       152       162       172       182       192       202     
                                                                               55    61                         88-MSE

Chain G from PDB  Type:PROTEIN  Length:192
 aligned with REX_THEAQ | Q9X2V5 from UniProtKB/Swiss-Prot  Length:211

    Alignment length:200
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203
            REX_THEAQ     4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYFGSYGTRGVGYTVPVLKRELRHILGLNRKWGLCIVGMGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNP 203
               SCOP domains d1xcbg1 G:4-77 Transcriptional repressor Rex, N-t        erminal domain   d1xcbg2 G:78-203 Transcriptional repressor Rex, C-terminal domain                                                              SCOP domains
               CATH domains 1xcbG01 G:4-73 'winged helix' repressor DNA bindi        ng domain    1xcbG02 G:74-203 NAD(P)-binding Rossmann-like Domain                                                                               CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhh........hhhhhhhh.hhhhhhhhhh..--------..hhhhhhhhhhhhhh....eeeeee..hhhhhhhhhh......eeeeeeee..............eee..hhhhhh.....eeee..hhhhhhhhhhhhhhh...eeee............eeee...hhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xcb G   4 PEAAISRLITYLRILEELEAQGVHRTSSEQLGELAQVTAFQVRKDLSYF--------GYTVPVLKRELRHILGLNRKWGLCIVGmGRLGSALADYPGFGESFELRGFFDVDPEKVGRPVRGGVIEHVDLLPQRVPGRIEIALLTVPREAAQKAADLLVAAGIKGILNFAPVVLEVPKEVAVENVDFLAGLTRLSFAILNP 203
                                    13        23        33        43        |-       |63        73        83    |   93       103       113       123       133       143       153       163       173       183       193       203
                                                                           52       61                         88-MSE

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

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Rossmann fold (7312)

Homologous Superfamily: NAD(P)-binding Rossmann-like Domain (1244)

Thermus aquaticus. Organism_taxid: 271. (3)

1a	1xcbF02	F:74-207
1b	1xcbA02	A:74-206
1c	1xcbB02	B:74-206
1d	1xcbD02	D:74-205
1e	1xcbC02	C:74-204
1f	1xcbE02	E:74-203
1g	1xcbG02	G:74-203

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Arc Repressor Mutant, subunit A (1030)

Homologous Superfamily: 'winged helix' repressor DNA binding domain (507)

Thermus aquaticus. Organism_taxid: 271. (1)

2a	1xcbA01	A:2-73
2b	1xcbC01	C:2-73
2c	1xcbE01	E:2-73
2d	1xcbF01	F:3-73
2e	1xcbD01	D:4-73
2f	1xcbB01	B:4-73
2g	1xcbG01	G:4-73

(no "Pfam Domain" information available for 1XCB)

Asymmetric Unit(hide GO term definitions)

Chain A,B,C,D,E,F,G (REX_THEAQ | Q9X2V5)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0050662	coenzyme binding	Interacting selectively and non-covalently with a coenzyme, any of various nonprotein organic cofactors that are required, in addition to an enzyme and a substrate, for an enzymatic reaction to proceed.
	GO:0048037	cofactor binding	Interacting selectively and non-covalently with a cofactor, a substance that is required for the activity of an enzyme or other protein. Cofactors may be inorganic, such as the metal atoms zinc, iron, and copper in certain forms, or organic, in which case they are referred to as coenzymes. Cofactors may either be bound tightly to active sites or bind loosely with the substrate.
	GO:0003700	transcription factor activity, sequence-specific DNA binding	Interacting selectively and non-covalently with a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex.
biological process
	GO:0045892	negative regulation of transcription, DNA-templated	Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0006355	regulation of transcription, DNA-templated	Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0051775	response to redox state	Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating redox state. Redox state refers to the balance of oxidized versus reduced forms of electron donors and acceptors in an organelle, cell or organ; plastoquinone, glutathione (GSH/GSSG), and nicotinamide nucleotides (NAD+/NADH and NADP+/NADPH) are among the most important.
	GO:0006351	transcription, DNA-templated	The cellular synthesis of RNA on a template of DNA.
cellular component
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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