1be3

CYTOCHROME BC1 COMPLEX FROM BOVINE

Method: X-RAY DIFFRACTION

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1. Protein Identity and Related Structures Protein Identity & Related Structures

CYTOCHROME BC1 COMPLEX

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UQCR1_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–446； UniProt 35–480

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P23004

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UQCR2_BOVIN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–439； UniProt 15–453

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P00157

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CYB_BOVIN
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–379； UniProt 1–379

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P00125

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	CY1_BOVIN
Isoform	—
PDB entities	4
Chains and sequence ranges	Author chain D； PDBConstruct 1–241； UniProt 1–241

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P13272

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCRI_BOVIN
Isoform	—
PDB entities	5, 9
Chains and sequence ranges	Author chain E； PDBConstruct 1–196； UniProt 79–274 Author chain I； PDBConstruct 1–78； UniProt 1–78

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P00129

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCR6_BOVIN
Isoform	—
PDB entities	6
Chains and sequence ranges	Author chain F； PDBConstruct 1–110； UniProt 1–110

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P13271

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCRQ_BOVIN
Isoform	—
PDB entities	7
Chains and sequence ranges	Author chain G； PDBConstruct 1–81； UniProt 1–81

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P00126

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCRH_BOVIN
Isoform	—
PDB entities	8
Chains and sequence ranges	Author chain H； PDBConstruct 1–78； UniProt 1–78

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P00130

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P07552） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCR10_BOVIN
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain J； PDBConstruct 1–62； UniProt 1–62

CYTOCHROME BC1 COMPLEX

OrganismNot specified

UniProt P07552

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 11	CYTOCHROME BC1 COMPLEX × 1 （P31800） CYTOCHROME BC1 COMPLEX × 1 （P23004） CYTOCHROME BC1 COMPLEX × 1 （P00157） CYTOCHROME BC1 COMPLEX × 1 （P00125） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00129） CYTOCHROME BC1 COMPLEX × 1 （P13271） CYTOCHROME BC1 COMPLEX × 1 （P00126） CYTOCHROME BC1 COMPLEX × 1 （P13272） CYTOCHROME BC1 COMPLEX × 1 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 2 HEME C × 1 FE2/S2 (INORGANIC) CLUSTER × 1	Consistent with protein count
2	Protein heterocomplex	Heteromer	Protein 22	CYTOCHROME BC1 COMPLEX × 2 （P31800） CYTOCHROME BC1 COMPLEX × 2 （P23004） CYTOCHROME BC1 COMPLEX × 2 （P00157） CYTOCHROME BC1 COMPLEX × 2 （P00125） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00129） CYTOCHROME BC1 COMPLEX × 2 （P13271） CYTOCHROME BC1 COMPLEX × 2 （P00126） CYTOCHROME BC1 COMPLEX × 2 （P13272） CYTOCHROME BC1 COMPLEX × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 4 HEME C × 2 FE2/S2 (INORGANIC) CLUSTER × 2	Consistent with protein count

Other States of the Same Protein in the Database

View Construct and Data Evidence

UniProt name	UCR11_BOVIN
Isoform	—
PDB entities	11
Chains and sequence ranges	Author chain K； PDBConstruct 1–56； UniProt 1–56

The page prioritizes protein identity, the current assembly, associated components, oligomeric state and cross-PDB links. Chain mapping and sequence ranges are retained as data evidence. Internal IDs, import timestamps and assembly operation expressions are maintenance fields and are not shown here.

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2. Structure Basics 2. Structure Basics

Entry ID entry_id	1be3
Deposition date deposition_date	1998-05-19
Structure title title	CYTOCHROME BC1 COMPLEX FROM BOVINE
Keywords keywords	ELECTRON TRANSPORT, CYTOCHROME, MEMBRANE PROTEIN; ELECTRON TRANSPORT
Experimental Method method	X-RAY DIFFRACTION

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3. Official assembly/model SAXS Official SAXS Profiles

This page reads only the latest assembly calculations. Every curve maps to an explicit PDB entry, official biological assembly and coordinate model.

1be3__assembly_1__model_1

Assembly 1 · Model 1 · CRYSOL 4.1.3-1-20251215 (887e7ef)

Download this curve (.dat)

1be3__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

1be3__assembly_1__model_1 | P(r) · Pending

P(r) will be calculated and displayed separately for the same assembly/model.

Rg（Guinier）	50.00 Å
Rg (electron density)	49.79 Å
Total Rg	49.88 Å
Atom count	16222
Residues	2049
Excluded volume	289300 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`1be3__assembly_1__model_1`	undecameric （11）	Success	4.1.3-1-20251215 (887e7ef)	View Download
2	1	`1be3__assembly_2__model_1`	22-meric （22）	Success	4.1.3-1-20251215 (887e7ef)	View Download

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4. Crystallography and Experiment 4. Crystallography & Experiment

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5. Entities and Polymers Entities & Polymers (14)

Entity 1 Entity 1 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	49266.3 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	A
Atom count atom_count	16222

TATYAQALQSVPETQVSQLDNGLRVASEQSSQPTCTVGVWIDAGSRYESEKNNGAGYFVEHLAFKGTKNRPGNALEKEVESMGAHLNAYSTREHTAYYIKALSKDLPKAVELLADIVQNCSLEDSQIEKERDVILQELQENDTSMRDVVFNYLHATAFQGTPLAQSVEGPSENVRKLSRADLTEYLSRHYKAPRMVLAAAGGLEHRQLLDLAQKHFSGLSGTYDEDAVPTLSPCRFTGSQICHREDGLPLAHVAIAVEGPGWAHPDNVALQVANAIIGHYDCTYGGGAHLSSPLASIAATNKLCQSFQTFNICYADTGLLGAHFVCDHMSIDDMMFVLQGQWMRLCTSATESEVLRGKNLLRNALVSHLDGTTPVCEDIGRSLLTYGRRIPLAEWESRIAEVDARVVREVCSKYFYDQCPAVAGFGPIEQLPDYNRIRSGMFWLRF

Entity 2 Entity 2 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	46575.5 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	B

SLKVAPKVKATEAPAGVPPHPQDLEFTRLPNGLVIASLENYAPASRIGLFIKAGSRYENSNNLGTSHLLRLASSLTTKGASSFKITRGIEAVGGKLSVTSTRENMAYTVECLRDDVDILMEFLLNVTTAPEFRRWEVAALQPQLRIDKAVALQNPQAHVIENLHAAAYRNALANSLYCPDYRIGKVTPVELHDYVQNHFTSARMALIGLGVSHPVLKQVAEQFLNIRGGLGLSGAKAKYHGGEIREQNGDSLVHAALVAESAAIGSAEANAFSVLQHVLGAGPHVKRGSNATSSLYQAVAKGVHQPFDVSAFNASYSDSGLFGFYTISQAASAGDVIKAAYNQVKTIAQGNLSNPDVQAAKNKLKAGYLMSVESSEGFLDEVGSQALAAGSYTPPSTVLQQIDAVADADVINAAKKFVSGRKSMAASGNLGHTPFIDEL

Entity 3 Entity 3 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	42620.3 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	C

MTNIRKSHPLMKIVNNAFIDLPAPSNISSWWNFGSLLGICLILQILTGLFLAMHYTSDTTTAFSSVTHICRDVNYGWIIRYMHANGASMFFICLYMHVGRGLYYGSYTFLETWNIGVILLLTVMATAFMGYVLPWGQMSFWGATVITNLLSAIPYIGTNLVEWIWGGFSVDKATLTRFFAFHFILPFIIMAIAMVHLLFLHETGSNNPTGISSDVDKIPFHPYYTIKDILGALLLILALMLLVLFAPDLLGDPDNYTPANPLNTPPHIKPEWYFLFAYAILRSIPNKLGGVLALAFSILILALIPLLHTSKQRSMMFRPLSQCLFWALVADLLTLTWIGGQPVEHPYITIGQLASVLYFLLILVLMPTAGTIENKLLKW

Entity 4 Entity 4 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	27323.3 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	D

SDLELHPPSYPWSHRGLLSSLDHTSIRRGFQVYKQVCSSCHSMDYVAYRHLVGVCYTEDEAKALAEEVEVQDGPNEDGEMFMRPGKLSDYFPKPYPNPEAARAANNGALPPDLSYIVRARHGGEDYVFSLLTGYCEPPTGVSLREGLYFNPYFPGQAIGMAPPIYNEVLEFDDGTPATMSQVAKDVCTFLRWAAEPEHDHRKRMGLKMLLMMGLLLPLVYAMKRHKWSVLKSRKLAYRPPK

Entity 5 Entity 5 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	21640.6 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	E

SHTDIKVPDFSDYRRPEVLDSTKSSKESSEARKGFSYLVTATTTVGVAYAAKNVVSQFVSSMSASADVLAMSKIEIKLSDIPEGKNMAFKWRGKPLFVRHRTKKEIDQEAAVEVSQLRDPQHDLERVKKPEWVILIGVCTHLGCVPIANAGDFGGYYCPCHGSHYDASGRIRKGPAPLNLEVPSYEFTSDDMVIVG

Entity 6 Entity 6 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	13371.2 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	F

AGRPAVSASSRWLEGIRKWYYNAAGFNKLGLMRDDTIHENDDVKEAIRRLPENLYDDRVFRIKRALDLSMRQQILPKEQWTKYEEDKSYLEPYLKEVIRERKEREEWAKK

Entity 7 Entity 7 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	9606.0 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	G

GRQFGHLTRVRHVITYSLSPFEQRAFPHYFSKGIPNVLRRTRACILRVAPPFVAFYLVYTWGTQEFEKSKRKNPAAYENDR

Entity 8 Entity 8 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	9189.1 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	H

GDPKEEEEEEEELVDPLTTVREQCEQLEKCVKARERLELCDERVSSRSQTEEDCTEELLDFLHARDHCVAHKLFNSLK

Entity 9 Entity 9 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	7964.3 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	I

MLSVAARSGPFAPVLSATSRGVAGALRPLVQAAVPATSESPVLDLKRSVLCRESLRGQAAGRPLVASVSLNVPASVRY

Entity 10 Entity 10 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	7209.3 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J

VAPTLTARLYSLLFRRTSTFALTIVVGALFFERAFDQGADAIYEHINEGKLWKHIKHKYENK

Entity 11 Entity 11 polymer

Description description	CYTOCHROME BC1 COMPLEX
Molecular weight formula_weight	6370.4 kDa
EC 编号 ec_number	1.10.2.2
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	K

MLTRFLGPRYRQLARNWVPTAQLWGAVGAVGLVSATDSRLILDWVPYINGKFKKDD

Entity 12 Entity 12 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	2

Entity 13 Entity 13 non-polymer

Description description	HEME C
Molecular weight formula_weight	618.5 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 14 Entity 14 non-polymer

Description description	FE2/S2 (INORGANIC) CLUSTER
Molecular weight formula_weight	175.8 kDa
Source method src_method	syn
Copy count entity_count	1

▼

6. Fold Classification (SCOP + CATH) 29 domains

SCOP 2.08 (16 domains)

Domain ID domain_id	d1be3a1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.185 — LuxS/MPP-like metallohydrolase
Superfamily Superfamily superfamily	d.185.1 — LuxS/MPP-like metallohydrolase
Family Family family	d.185.1.1 — MPP-like

Domain ID domain_id	d1be3a2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.185 — LuxS/MPP-like metallohydrolase
Superfamily Superfamily superfamily	d.185.1 — LuxS/MPP-like metallohydrolase
Family Family family	d.185.1.1 — MPP-like

Domain ID domain_id	d1be3b1
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.185 — LuxS/MPP-like metallohydrolase
Superfamily Superfamily superfamily	d.185.1 — LuxS/MPP-like metallohydrolase
Family Family family	d.185.1.1 — MPP-like

Domain ID domain_id	d1be3b2
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.185 — LuxS/MPP-like metallohydrolase
Superfamily Superfamily superfamily	d.185.1 — LuxS/MPP-like metallohydrolase
Family Family family	d.185.1.1 — MPP-like

Domain ID domain_id	d1be3c2
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.32 — a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Superfamily Superfamily superfamily	f.32.1 — a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.32.1.1 — a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3c3
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.21 — Heme-binding four-helical bundle
Superfamily Superfamily superfamily	f.21.1 — Transmembrane di-heme cytochromes
Family Family family	f.21.1.2 — Cytochrome b of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3d2
Class class	a — All alpha proteins
Fold Fold fold	a.3 — Cytochrome c
Superfamily Superfamily superfamily	a.3.1 — Cytochrome c
Family Family family	a.3.1.3 — Cytochrome bc1 domain

Domain ID domain_id	d1be3d3
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.11 — Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor
Family Family family	f.23.11.1 — Cytochrome c1 subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase), transmembrane anchor

Domain ID domain_id	d1be3e1
Class class	b — All beta proteins
Fold Fold fold	b.33 — ISP domain
Superfamily Superfamily superfamily	b.33.1 — ISP domain
Family Family family	b.33.1.1 — Rieske iron-sulfur protein (ISP)

Domain ID domain_id	d1be3e2
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.12 — ISP transmembrane anchor
Family Family family	f.23.12.1 — ISP transmembrane anchor

Domain ID domain_id	d1be3f_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.27 — 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Superfamily Superfamily superfamily	f.27.1 — 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.27.1.1 — 14 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3g_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.13 — Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.23.13.1 — Ubiquinone-binding protein QP-C of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3h_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.28 — Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Superfamily Superfamily superfamily	f.28.1 — Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.28.1.1 — Non-heme 11 kDa protein of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3i_
Class class	d — Alpha and beta proteins (a+b)
Fold Fold fold	d.184 — Non-globular alpha+beta subunits of globular proteins
Superfamily Superfamily superfamily	d.184.1 — Non-globular alpha+beta subunits of globular proteins
Family Family family	d.184.1.3 — Ubiquinol-cytochrome c reductase 8 kDa protein

Domain ID domain_id	d1be3j_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.14 — Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.23.14.1 — Subunit X (non-heme 7 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

Domain ID domain_id	d1be3k_
Class class	f — Membrane and cell surface proteins and peptides
Fold Fold fold	f.23 — Single transmembrane helix
Superfamily Superfamily superfamily	f.23.15 — Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)
Family Family family	f.23.15.1 — Subunit XI (6.4 kDa protein) of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase)

CATH v4.4 (13 domains)

Domain ID domain_id	1be3A01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	1be3A02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	1be3B01
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	1be3B02
Class class	3 — Alpha Beta
Architecture architecture	30 — 2-Layer Sandwich
Topology topology	830 — Cytochrome Bc1 Complex; Chain A, domain 1
Homologous superfamily homologous superfamily	10 — Metalloenzyme, LuxS/M16 peptidase-like

Domain ID domain_id	1be3C00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	810 — Cytochrome Bc1 Complex; Chain C
Homologous superfamily homologous superfamily	10 — Cytochrome Bc1 Complex; Chain C

Domain ID domain_id	1be3D01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	100 — Cytochrome c1, transmembrane anchor, C-terminal

Domain ID domain_id	1be3D02
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	760 — Cytochrome Bc1 Complex; Chain D, domain 2
Homologous superfamily homologous superfamily	10 — Cytochrome c-like domain

Domain ID domain_id	1be3E01
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	270 — Ubiquinol cytochrome reductase, transmembrane domain

Domain ID domain_id	1be3E02
Class class	2 — Mainly Beta
Architecture architecture	102 — 3-layer Sandwich
Topology topology	10 — Rieske Iron-sulfur Protein
Homologous superfamily homologous superfamily	10 — Rieske [2Fe-2S] iron-sulphur domain

Domain ID domain_id	1be3F00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	1090 — Cytochrome Bc1 Complex; Chain F
Homologous superfamily homologous superfamily	10 — Cytochrome b-c1 complex subunit 7

Domain ID domain_id	1be3G00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	210 — Cytochrome b-c1 complex subunit 8

Domain ID domain_id	1be3H00
Class class	1 — Mainly Alpha
Architecture architecture	10 — Orthogonal Bundle
Topology topology	287 — Helix Hairpins
Homologous superfamily homologous superfamily	20 — Ubiquinol-cytochrome C reductase hinge domain

Domain ID domain_id	1be3J00
Class class	1 — Mainly Alpha
Architecture architecture	20 — Up-down Bundle
Topology topology	5 — Single alpha-helices involved in coiled-coils or other helix-helix interfaces
Homologous superfamily homologous superfamily	260 — Cytochrome b-c1 complex subunit 9

▶

Unit-cell length a length_a	211.200 Å
Unit-cell length b length_b	211.200 Å
Unit-cell length c length_c	339.280 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	120.00 °
Molecules per unit cell Z z_pdb	12

Space group space_group	P 65 2 2
Space-group number int_tables_number	179
Crystal system crystal_system	—

Resolution resolution	3.000 Å
Low-resolution limit resolution_low	40.000 Å
R factor r_factor	—
R_work r_work	0.2600
R_free r_free	0.3200

CYTOCHROME BC1 COMPLEX FROM BOVINE

1. Protein Identity and Related Structures Protein Identity & Related Structures

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

CYTOCHROME BC1 COMPLEX

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer