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8B6J

Cryo-EM structure of cytochrome bc1 complex (complex-III) from respiratory supercomplex of Tetrahymena thermophila

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, L
(A, a)
Peptidase M16 inactive domain proteinpolymer51358023.92UniProt (I7MGU2)
Pfam (PF00675)
Pfam (PF05193)
Tetrahymena thermophila SB210
2B, M
(B, b)
M16 family peptidase, putativepolymer48253030.52UniProt (I7MJ25)
Pfam (PF05193)
Tetrahymena thermophila SB210
3C, N
(C, c)
Apocytochrome bpolymer42650635.52UniProt (Q950Z1)
Pfam (PF00033)
Tetrahymena thermophila SB210
4D, O
(D, d)
Cytochrome protein c1polymer31937616.62UniProt (Q24IM5)
Pfam (PF02167)
Tetrahymena thermophila SB210
5E, P
(E, e)
Rieske iron-sulfur protein, ubiquinol-cytochrome C reductase iron-sulfur subunitpolymer26930697.02UniProt (I7MIC7)
Pfam (PF00355)
Tetrahymena thermophila SB210
6F, Q
(F, f)
Ubiquinol-cytochrome C reductase hinge proteinpolymer869885.52UniProt (Q23K66)
Pfam (PF02320)
Tetrahymena thermophila SB210
7G, R
(G, g)
UQCRTT1polymer32839193.52UniProt (Q23F81)Tetrahymena thermophila SB210
8H, S
(H, h)
Transmembrane protein, putativepolymer13015677.82UniProt (I7M484)Tetrahymena thermophila SB210
9I, T
(I, i)
Transmembrane protein, putativepolymer11914262.62UniProt (I7MM45)Tetrahymena thermophila SB210
10J, U
(J, j)
UQCRTT3/UP1polymer665634.92Tetrahymena thermophila SB210
11K, V
(K, k)
Transmembrane protein, putativepolymer627455.72UniProt (I7MFL6)Tetrahymena thermophila SB210
12W, X
(l, L)
UQCRTT2polymer414850.62Tetrahymena thermophila SB210
13AB, BB, FB, GA, GB...
(c, C, d, g, k...)
1,2-DIACYL-SN-GLYCERO-3-PHOSPHOCHOLINEnon-polymer790.115Chemie (PC1)
14AA, BA, WA, XA
(C, c)
PROTOPORPHYRIN IX CONTAINING FEnon-polymer616.54Chemie (HEM)
15CA, CB, DA, EA, EB...
(C, c, g, h, D...)
CARDIOLIPINnon-polymer1464.015Chemie (CDL)
16DB, JA, KA
(c, C)
Ubiquinone-8non-polymer727.13Chemie (UQ8)
17LA, OB
(C, L)
1,2-dioleoyl-sn-glycero-3-phosphoethanolaminenon-polymer744.02Chemie (PEE)
18HB, MA
(d, D)
HEME Cnon-polymer618.52Chemie (HEC)
19IB, OA
(e, E)
FE2/S2 (INORGANIC) CLUSTERnon-polymer175.82Chemie (FES)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains24
Total formula weight653928.5
Non-Polymers*Number of molecules43
Total formula weight41536.8
All*Total formula weight695465.3
*Water molecules are not included.

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PDB entries from 2025-12-31

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