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Title :   RAT OUTER MITOCHONDRIAL MEMBRANE CYTOCHROME B5

Authors :   V. Oganesyan, X. Zhang

Date :   19 Apr 00 (Deposition) - 04 Apr 01 (Release) - 19 Feb 14 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.80

Chains :   Asym. Unit : A,B
Biol. Unit 1: A  (1x)
Biol. Unit 2: B  (1x)

Keywords :   Cytochrome, Heme, Electron Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Wirtz, V. Oganesyan, X. Zhang, J. Studer, M. Rivera
Modulation Of Redox Potential In Electron Transfer Proteins Effects Of Complex Formation On The Active Site Microenvironment Of Cytochrome B5.
Faraday Disc. Chem. Soc V. 116 221 2001
PubMed-ID: 11197480

Molecule 1 - CYTOCHROME B5
	Cell	:	HEPATOCYTE
	Cellular Location	:	OUTER MITOCHONDRIAL MEMBRANE
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Cellular Location	:	PERIPLASMIC SPACE
	Expression System Plasmid	:	PET 11A
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Fragment	:	WATER SOLUBLE DOMAIN
	Mutation	:	YES
	Organ	:	LIVER
	Organelle	:	MITOCHONDRIA
	Organism Common	:	NORWAY RAT
	Organism Scientific	:	RATTUS NORVEGICUS
	Organism Taxid	:	10116

		1	2
Asymmetric Unit	:	A	B
Biological Unit 1 (1x)	:	A
Biological Unit 2 (1x)	:		B

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (1, 2)

No.	Name	Count	Type	Full Name
1	HEM	2	Ligand/Ion	PROTOPORPHYRIN IX CONTAINING FE

Biological Unit 1 (1, 1)

No.	Name	Count	Type	Full Name
1	HEM	1	Ligand/Ion	PROTOPORPHYRIN IX CONTAINING FE

Biological Unit 2 (1, 1)

No.	Name	Count	Type	Full Name
1	HEM	1	Ligand/Ion	PROTOPORPHYRIN IX CONTAINING FE

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ILE A:32 , PHE A:35 , HIS A:39 , PRO A:40 , GLY A:41 , LEU A:46 , SER A:57 , PHE A:58 , ILE A:61 , HIS A:63 , ALA A:67 , LEU A:71 , HOH A:228 , SER B:64 , PRO B:65 , ARG B:68	BINDING SITE FOR RESIDUE HEM A 201
2	AC2	SOFTWARE	PHE B:35 , HIS B:39 , PRO B:40 , ILE B:45 , LEU B:46 , GLN B:49 , PHE B:58 , ILE B:61 , HIS B:63 , ALA B:67 , MET B:70 , LEU B:71 , HOH B:221	BINDING SITE FOR RESIDUE HEM B 201

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

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

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

Asymmetric Unit (2, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CYTOCHROME_B5_2	PS50255	Cytochrome b5 family, heme-binding domain profile.	CYB5B_RAT	20-96	2	A:4-80 B:4-80
2	CYTOCHROME_B5_1	PS00191	Cytochrome b5 family, heme-binding domain signature.	CYB5B_RAT	51-58	2	A:35-42 B:35-42

Biological Unit 1 (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CYTOCHROME_B5_2	PS50255	Cytochrome b5 family, heme-binding domain profile.	CYB5B_RAT	20-96	1	A:4-80 -
2	CYTOCHROME_B5_1	PS00191	Cytochrome b5 family, heme-binding domain signature.	CYB5B_RAT	51-58	1	A:35-42 -

Biological Unit 2 (2, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CYTOCHROME_B5_2	PS50255	Cytochrome b5 family, heme-binding domain profile.	CYB5B_RAT	20-96	1	- B:4-80
2	CYTOCHROME_B5_1	PS00191	Cytochrome b5 family, heme-binding domain signature.	CYB5B_RAT	51-58	1	- B:35-42

Asymmetric Unit (3, 6)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1	ENSRNOT00000015006	1	ENSRNOE00000104782	chr19:37016959-37017126	168	CYB5B_RAT	1-54	54	2	A:1-38 B:1-38	38 38
1.2	ENSRNOT00000015006	2	ENSRNOE00000105131	chr19:37036324-37036452	129	CYB5B_RAT	55-97	43	2	A:39-81 B:39-81	43 43
1.3	ENSRNOT00000015006	3	ENSRNOE00000105523	chr19:37036904-37036933	30	CYB5B_RAT	98-107	10	2	A:82-86 B:82-86	5 5
1.4	ENSRNOT00000015006	4	ENSRNOE00000105590	chr19:37045457-37045485	29	CYB5B_RAT	108-117	10	0	-	-
1.5	ENSRNOT00000015006	5	ENSRNOE00000295386	chr19:37048353-37050718	2366	CYB5B_RAT	117-146	30	0	-	-

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
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Chain A from PDB  Type:PROTEIN  Length:86
 aligned with CYB5B_RAT | P04166 from UniProtKB/Swiss-Prot  Length:146

    Alignment length:86
                                    26        36        46        56        66        76        86        96      
            CYB5B_RAT    17 DPAVTYYRLEEVAKRNTAEETWMVIHGRVYDITRFLSEHPGGEEVLLEQAGADATESFEDVGHSPDAREMLKQYYIGDVHPNDLKP 102
               SCOP domains d1euea_ A: Cytochrome b5                                                               SCOP domains
               CATH domains 1eueA00 A:1-86 Flavocytochrome B2, subunit A, domain 1                                 CATH domains
               Pfam domains -------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....eehhhhhh..ee..eeeeee..eeee.hhhhhhh...hhhhhh.....hhhhhhhhh.hhhhhhhh...eeeee.hhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---CYTOCHROME_B5_2  PDB: A:4-80 UniProt: 20-96                                  ------ PROSITE (1)
                PROSITE (2) ----------------------------------CYTOCHRO-------------------------------------------- PROSITE (2)
               Transcript 1 Exon 1.1  PDB: A:1-38 UniProt: 1-54   Exon 1.2  PDB: A:39-81 UniProt: 55-97      1.3   Transcript 1
                 1eue A   1 DPAVTYYRLEEVAKRNTAEETWMVIHGRVYDITRFLSEHPGGEEILLEQAGADATESFEDIGHSPDAREMLKQYYIGDVHPNDLKP  86
                                    10        20        30        40        50        60        70        80

Chain B from PDB  Type:PROTEIN  Length:86
 aligned with CYB5B_RAT | P04166 from UniProtKB/Swiss-Prot  Length:146

    Alignment length:86
                                    26        36        46        56        66        76        86        96      
            CYB5B_RAT    17 DPAVTYYRLEEVAKRNTAEETWMVIHGRVYDITRFLSEHPGGEEVLLEQAGADATESFEDVGHSPDAREMLKQYYIGDVHPNDLKP 102
               SCOP domains d1eueb_ B: Cytochrome b5                                                               SCOP domains
               CATH domains 1eueB00 B:1-86 Flavocytochrome B2, subunit A, domain 1                                 CATH domains
               Pfam domains -------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....eehhhhhhh.ee..eeeeee..eeee.hhhh......hhhhhhh....hhhhhhhh..hhhhhhhhh..eeeee.hhhh.. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ---CYTOCHROME_B5_2  PDB: B:4-80 UniProt: 20-96                                  ------ PROSITE (1)
                PROSITE (2) ----------------------------------CYTOCHRO-------------------------------------------- PROSITE (2)
               Transcript 1 Exon 1.1  PDB: B:1-38 UniProt: 1-54   Exon 1.2  PDB: B:39-81 UniProt: 55-97      1.3   Transcript 1
                 1eue B   1 DPAVTYYRLEEVAKRNTAEETWMVIHGRVYDITRFLSEHPGGEEILLEQAGADATESFEDIGHSPDAREMLKQYYIGDVHPNDLKP  86
                                    10        20        30        40        50        60        70        80

Legend:		→ Mismatch	(orange background)
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	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(

)

Folds(

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Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a+b) (23004)

Fold: Cytochrome b5-like heme/steroid binding domain (64)

Superfamily: Cytochrome b5-like heme/steroid binding domain (64)

Family: Cytochrome b5 (57)

Protein domain: Cytochrome b5 (38)

Norway rat (Rattus norvegicus) [TaxId: 10116] (20)

1a	d1euea_	A:
1b	d1eueb_	B:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

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Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: Roll (3276)

Topology: Flavocytochrome B2; Chain A, domain 1 (56)

Homologous Superfamily: Flavocytochrome B2, subunit A, domain 1 (56)

Norway rat (Rattus norvegicus) (20)

1a	1eueA00	A:1-86
1b	1eueB00	B:1-86

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

Asymmetric Unit(hide GO term definitions)

Chain A,B (CYB5B_RAT | P04166)

molecular function
	GO:0045153	electron transporter, transferring electrons within CoQH2-cytochrome c reductase complex activity	Enables the directed movement of electrons within the CoQH2-cytochrome c reductase complex.
	GO:0008047	enzyme activator activity	Binds to and increases the activity of an enzyme.
	GO:0020037	heme binding	Interacting selectively and non-covalently with heme, any compound of iron complexed in a porphyrin (tetrapyrrole) ring.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
biological process
	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:0043085	positive regulation of catalytic activity	Any process that activates or increases the activity of an enzyme.
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:0043231	intracellular membrane-bounded organelle	Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005743	mitochondrial inner membrane	The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
	GO:0005741	mitochondrial outer membrane	The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.
	GO:0005739	mitochondrion	A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.

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	CYB5B_RAT \| P04166	:	1awp 1b5m 1icc 1lj0 2i89 3mus 4hil

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