3bcc

STIGMATELLIN AND ANTIMYCIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN

Method: X-RAY DIFFRACTION

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

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

OrganismNot specified

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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	UCR1_BOVIN
Isoform	—
PDB entities	1
Chains and sequence ranges	Author chain A； PDBConstruct 1–446； UniProt 35–480

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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	UCR2_BOVIN
Isoform	—
PDB entities	2
Chains and sequence ranges	Author chain B； PDBConstruct 1–422； UniProt 32–453

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

OrganismNot specified

UniProt P18946

State in the Current Structure

Assembly	Physical composition	Protein state	Molecular copy count	Associated components	Data consistency
1	Protein heterocomplex	Heteromer	Protein 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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_CHICK
Isoform	—
PDB entities	3
Chains and sequence ranges	Author chain C； PDBConstruct 1–380； UniProt 1–380

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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
Chains and sequence ranges	Author chain E； PDBConstruct 1–196； UniProt 79–274

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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 1–109； UniProt 1–109

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00130） PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

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 20	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P31800） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P23004） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P18946） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00125） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13272） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00129） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P13271） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 （P00126） UBIQUINOL CYTOCHROME C OXIDOREDUCTASE × 2 PROTOPORPHYRIN IX CONTAINING FE × 6 STIGMATELLIN × 2 ANTIMYCIN × 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	UCRX_BOVIN
Isoform	—
PDB entities	10
Chains and sequence ranges	Author chain J； PDBConstruct 1–62； UniProt 1–62

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	3bcc
Deposition date deposition_date	1998-03-23
Structure title title	STIGMATELLIN AND ANTIMYCIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN
Keywords keywords	UBIQUINONE, OXIDOREDUCTASE, REDOX ENZYME, MEMBRANE PROTEIN, RESPIRATORY CHAIN, STIGMATELLIN, ANTIMYCIN, ELECTRON TRANSPORT; OXIDOREDUCTASE
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.

3bcc__assembly_1__model_1

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

Download this curve (.dat)

3bcc__assembly_1__model_1 | I(q)

100 plotted points; both axes use logarithmic scales.

3bcc__assembly_1__model_1 | P(r) · Pending

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

Rg（Guinier）	54.48 Å
Rg (electron density)	53.61 Å
Total Rg	53.81 Å
Atom count	31290
Residues	4000
Excluded volume	556620 Å³
Maximum q	0.500 Å⁻¹

Assembly	Model	Structure unit	Oligomeric description	Status	CRYSOL	Actions
1	1	`3bcc__assembly_1__model_1`	20-MERIC （20）	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	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	49795.9 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	15645

TAYYAQALQSVPETQVSQLDNGVRVASEQSSQPTCTVGVWIDAGSRYESEKNNGAGYFLEHLAFKGTKNRPQNALEKEVESMGAHLNAYSSREHTAYYIKALSKDVPKAVELLADIVQNCSLEDSQIEKERDVIVRELQENDTSMREVVFNYLHATAFQGTGLAQSVEGPSENIRKLSRADLTEYLSTHYTAPRMVLAAAGGVEHQQLLELAQKHFGGVPFTYDDDAVPTLSKCRFTGSQIRHREDGLPLAHVAIAVEGPGWAHPDLVALQVANAIIGHYDRTYGGGLHSSSPLASIAVTNKLCQSFQTFSICYSETGLFGFYFVCDRMSIDDMMFVLQGQWMRLCTSISESEVLRGKNFLRNALVSHLDGTTPVCEDIGRELLTYGRRIPLEEWEERLAEVDARMVREVCSKYIYDQCPAVAGPGPIEQLPDYNRIRSGMFWLRF

Entity 2 Entity 2 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	45091.7 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

PPHPQDLEITKLPNGLVIASLENYSPGSTIGVFIKAGSRYENSSNLGTSHLLRLASSLTTKGASSFKITRGIEAVGGKLSVESTRENMAYTVECLRDDVEILMEFLLNVTTAPEFRPWEVADLQPQLKIDKAVAFQNPQTHVIENLHAAAYRNALADSLYCPDYRIGKVTSVELHDFVQNHFTSARMALVGLGVSHPVLKNVAEQLLNIRGGLGLSGAKAKYRGGEIREQNGDSLVHAAIVAESAAIGGAEANAFSVLQHVLGANPHVKRGLNATSSLYQAVAKGVHQPFDVSAFNASYSDSGLFGFYTISQAAYAGQVIKAAYNQVKTIAQGNVSNENVQAAKNKLKAKYLMSVESSEGFLEEVGSQALAAGSYNPPSTVLQQIDAVADADVIKAAKKFVSRQKSMAASGNLGHTPFVDEL

Entity 3 Entity 3 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	42623.0 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	C

MAPNIRKSHPLLKMINNSLIDLPAPSNISAWWNFGSLLAVCLMTQILTGLLLAMHYTADTSLAFSSVAHTCRNVQYGWLIRNLHANGASFFFICIFLHIGRGLYYGSYLYKETWNTGVILLLTLMATAFVGYVLPWGQMSFWGATVITNLFSAIPYIGHTLVEWAWGGFSVDNPTLTRFFALHFLLPFAIAGITIIHLTFLHESGSNNPLGISSDSDKIPFHPYYSFKDILGLTLMLTPFLTLALFSPNLLGDPENFTPANPLVTPPHIKPEWYFLFAYAILRSIPNKLGGVLALAASVLILFLIPFLHKSKQRTMTFRPLSQTLFWLLVANLLILTWIGSQPVEHPFIIIGQMASLSYFTILLILFPTIGTLENKMLNY

Entity 4 Entity 4 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	27357.2 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	D

SDLELHPPSYPWSHRGPLSSLDHTSIRRGFQVYKQVCSSCHSMDYVAYRHLVGVCYTEDEAKALAEEVEVQDGPNEDGEMFMRPGKLSDYFPKPYPNPEAARAANNGALPPDLSYIVRARHGGEDYVFSLLTGYCEPPTGVSVREGLYFNPYFPGQAIGMAPPIYNDVLEFDDGTPATMSQVAKDVCTFLRWAAEPEHDHRKRMGLKMLLMMGLLVPLVYYMKRHKWSVLKSRKLAYRPPK

Entity 5 Entity 5 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	21739.7 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

SHTDIKVPNFSDYRRPPDDYSTKSSRESDPSRKGFSYLVTAVTTLGVAYAAKNVVTQFVSSMSASADVLAMSKIEIKLSDIPEGKNMAFKWRGKPLFVRHRTKKEIDQEAAVEVSQLRDPQHDLERVKKPEWVILIGVCTHLGCVPIANAGDFGGYYCPCHGSHYDASGRIRKGPAPLNLEVPSYEFTSDDMVIVG

Entity 6 Entity 6 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	13400.1 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	F

AGRPAVSASSRWLEGIRKWYYNAAGFNKYGLMRDDTIYENDDVKEAIRRLPENLYDDRMFRIKRALDLNMRQQILPKEQWTKYEEDVPYLEPYLKEVIRERKEREEWDK

Entity 7 Entity 7 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	9715.2 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	G

GRQFGHLTRVRHLITYSLSPFEQRPFPHYFSKGVPNVWRRLRACILRVAPPFLAFYLLYTWGTQEFEKSKRKNPAAYVNDR

Entity 8 Entity 8 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	9223.1 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

GDPKEEEEEEEELVDPLTTVREQCEQLEKCVKARERLELCDERVSSRSQTEEDCTEELFDFLHARDHCVAHKLFNSLK

Entity 9 Entity 9 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	2826.5 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	I

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Entity 10 Entity 10 polymer

Description description	UBIQUINOL CYTOCHROME C OXIDOREDUCTASE
Molecular weight formula_weight	7175.3 kDa
Source method src_method	nat
Copy count entity_count	1

Polymer Polymer

Polymer type type	polypeptide(L)
Chain IDs strand_id	J

VAPTLTARLYSLLFRRTSTFALTIVVGALLFERAFDQGADAIYEHINEGKLWKHIKHKYENK

Entity 11 Entity 11 non-polymer

Description description	PROTOPORPHYRIN IX CONTAINING FE
Molecular weight formula_weight	616.5 kDa
Source method src_method	syn
Copy count entity_count	3

Entity 12 Entity 12 non-polymer

Description description	STIGMATELLIN
Molecular weight formula_weight	482.7 kDa
Source method src_method	syn
Copy count entity_count	1

Entity 13 Entity 13 non-polymer

Description description	ANTIMYCIN
Molecular weight formula_weight	534.6 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

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6. Fold Classification (SCOP + CATH) 27 domains

SCOP 2.08 (14 domains)

Domain ID domain_id	d3bcca1
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	d3bcca2
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	d3bccb1
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	d3bccb2
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	d3bccc2
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	d3bccc3
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	d3bccd2
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	d3bccd3
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	d3bcce1
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	d3bcce2
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	d3bccf_
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	d3bccg_
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	d3bcch_
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	d3bccj_
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)

CATH v4.4 (13 domains)

Domain ID domain_id	3bccA01
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	3bccA02
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	3bccB01
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	3bccB02
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	3bccC00
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	3bccD01
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	3bccD02
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	3bccE01
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	3bccE02
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	3bccF00
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	3bccG00
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	3bccH00
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	3bccJ00
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	173.180 Å
Unit-cell length b length_b	179.730 Å
Unit-cell length c length_c	238.220 Å
Unit-cell angle α angle_alpha	90.00 °
Unit-cell angle β angle_beta	90.00 °
Unit-cell angle γ angle_gamma	90.00 °
Molecules per unit cell Z z_pdb	8

Space group space_group	P 21 21 21
Space-group number int_tables_number	19
Crystal system crystal_system	—

Resolution resolution	3.700 Å
Low-resolution limit resolution_low	12.000 Å
R factor r_factor	0.2890
R_work r_work	0.2890
R_free r_free	0.3210

STIGMATELLIN AND ANTIMYCIN BOUND CYTOCHROME BC1 COMPLEX FROM CHICKEN

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

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

UBIQUINOL CYTOCHROME C OXIDOREDUCTASE

State in the Current Structure

Other States of the Same Protein in the Database

Monomer

Homodimer

Homotetramer

Other homooligomers

Heteromeric or nucleic-acid complex

2. Structure Basics 2. Structure Basics

3. Official assembly/model SAXS Official SAXS Profiles

3bcc__assembly_1__model_1

3bcc__assembly_1__model_1 | I(q)

3bcc__assembly_1__model_1 | P(r) · Pending

4. Crystallography and Experiment 4. Crystallography & Experiment