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3CXH

Structure of yeast complex III with isoform-2 cytochrome c bound and definition of a minimal core interface for electron transfer.

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, L
(A, L)
Cytochrome b-c1 complex subunit 1, mitochondrialpolymer43147445.22UniProt (P07256)
Pfam (PF00675)
Pfam (PF05193)
Saccharomyces cerevisiae (yeast)Ubiquinol- cytochrome-c reductase complex core protein 1, Core protein I, Complex III subunit 1
2B, M
(B, M)
Cytochrome b-c1 complex subunit 2, mitochondrialpolymer35238751.92UniProt (P07257)
Pfam (PF00675)
Saccharomyces cerevisiae (yeast)Ubiquinol- cytochrome-c reductase complex core protein 2, Core protein II, Complex III subunit 2
3C, N
(C, N)
Cytochrome bpolymer38543686.62UniProt (P00163)
Pfam (PF00033)
Pfam (PF00032)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome-c reductase complex cytochrome b subunit, Cytochrome b-c1 complex subunit 3, Complex III subunit 3, Complex III subunit III, Complex III subunit CYTB, Cytochrome b-c1 complex subunit CYTB
4D, O
(D, O)
Cytochrome c1, heme protein, mitochondrialpolymer24827807.42UniProt (P07143)
Pfam (PF02167)
Saccharomyces cerevisiae (yeast)Cytochrome c-1, Cytochrome b-c1 complex subunit 4, Ubiquinol-cytochrome-c reductase complex cytochrome c1 subunit, Complex III subunit 4, Complex III subunit IV
5E, P
(E, P)
Cytochrome b-c1 complex subunit Rieske, mitochondrialpolymer18520123.02UniProt (P08067)
Pfam (PF02921)
Pfam (PF00355)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome c reductase iron-sulfur subunit, Rieske iron-sulfur protein, RISP, Complex III subunit 5
6F, Q
(F, Q)
Cytochrome b-c1 complex subunit 6polymer14617144.92UniProt (P00127)
Pfam (PF02320)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome c reductase complex 17 kDa protein, Cytochrome c1 non-heme 17 kDa protein, Mitochondrial hinge protein, Complex III subunit 6, Complex III subunit VI
7G, R
(G, R)
Cytochrome b-c1 complex subunit 7polymer12614452.62UniProt (P00128)
Pfam (PF02271)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome c reductase c reductase complex 14 kDa protein, Complex III subunit 7, Complex III subunit VII
8H, S
(H, S)
Cytochrome b-c1 complex subunit 8polymer9310856.32UniProt (P08525)
Pfam (PF02939)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome c reductase complex ubiquinone-binding protein QP-C, Ubiquinol-cytochrome c reductase complex 11 kDa protein, Complex III subunit VII, Complex III subunit 8
9I, T
(I, T)
Cytochrome b-c1 complex subunit 9polymer657354.12UniProt (P22289)
Pfam (PF05365)
Saccharomyces cerevisiae (yeast)Ubiquinol-cytochrome c reductase complex 7.3 kDa protein, Cytochrome c1 non-heme 7.3 kDa protein, Complex III subunit X, Complex III subunit 9
10J, U
(J, U)
HEAVY CHAIN (VH) OF FV-FRAGMENTpolymer12714365.82Mus musculus (house mouse)
11K, V
(K, V)
LIGHT CHAIN (VL) OF FV-FRAGMENTpolymer10711926.42Mus musculus (house mouse)
12W
(W)
Cytochrome c iso-2polymer11212466.21UniProt (P00045)
Pfam (PF00034)
Saccharomyces cerevisiae (yeast)
13X
(X)
beta-D-fructofuranose-(2-1)-alpha-D-glucopyranosebranched342.31In PDB
BIRD (PRD_900003)
sucrose
14KA, Y
(L, A)
UNDECYL-MALTOSIDEnon-polymer496.62Chemie (UMQ)
PubChem (44462510)
PubChem (58112566)
PubChem (59518662)
PubChem (46936455)
PubChem (68343856)
PubChem (70699429)
PubChem (70701336)
PubChem (70701337)
PubChem (70839940)
PubChem (70841479)
PubChem (70863062)
PubChem (71300308)
PubChem (447793)
PubChem (89952000)
PubChem (5076192)
PubChem (70699426)
PubChem (70699431)
PubChem (70796434)
PubChem (71300307)
PubChem (92132109)
PubChem (124643296)
PubChem (126731015)
PubChem (126731038)
PubChem (126735855)
PubChem (126735857)
PubChem (131632466)
PubChem (169544249)
15AA, FA, MA, NA, RA...
(C, D, N, O, W)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.57Chemie (HEM)
16BA, OA
(C, N)
STIGMATELLIN Anon-polymer514.62Chemie (SMA)
PubChem (49867661)
PubChem (45487276)
PubChem (443658)
PubChem (447884)
PubChem (5293)
PubChem (5353970)
PubChem (5326513)
PubChem (124383969)
PubChem (6435507)
PubChem (92966532)
PubChem (101724523)
PubChem (124708091)
PubChem (124936630)
PubChem (124936631)
PubChem (125116916)
PubChem (159935206)
PubChem (162931293)
PubChem (162931294)
PubChem (162931295)
17CA, PA
(C, N)
(2R)-3-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-2-(tetradecanoyloxy)propyl octadecanoatenon-polymer692.02Chemie (8PE)
PubChem (447790)
PubChem (9546733)
18DA, QA
(C, N)
(2R,5R,11S,14R)-2-(butanoyloxy)-5,8,11-trihydroxy-5,11-dioxido-16-oxo-14-[(propanoyloxy)methyl]-4,6,10,12,15-pentaoxa-5,11-diphosphanonadec-1-yl undecanoatenon-polymer764.72Chemie (CN6)
PubChem (24779691)
19EA, LA
(C, N)
(1R)-2-{[(S)-(2-aminoethoxy)(hydroxy)phosphoryl]oxy}-1-[(heptanoyloxy)methyl]ethyl octadecanoatenon-polymer593.82Chemie (9PE)
PubChem (24779687)
PubChem (138256935)
20GA, SA
(D, O)
(1R)-2-(dodecanoyloxy)-1-[(phosphonooxy)methyl]ethyl tetradecanoatenon-polymer564.72Chemie (7PH)
PubChem (24779689)
PubChem (138276598)
21HA, TA
(E, P)
FE2/S2 (INORGANIC) CLUSTERnon-polymer175.82Chemie (FES)
22IA, JA
(E, L)
(1R)-2-(phosphonooxy)-1-[(tridecanoyloxy)methyl]ethyl pentadecanoatenon-polymer592.82Chemie (6PH)
PubChem (447791)
PubChem (78184123)
23AB, BB, CB, DB, EB...
(F, G, H, I, J...)
waterwater18.0548Chemie (HOH)
Sequence modifications
A, L: 27 - 457 (UniProt: P07256)
PDBExternal DatabaseDetails
Asp 153Glu 153conflict
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains23
Total formula weight520294.6
BranchedNumber of molecules1
Total formula weight342.3
Non-Polymers*Number of molecules23
Total formula weight13105.5
All*Total formula weight533742.3
*Water molecules are not included.

253389

PDB entries from 2026-05-13

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