8BEL

Cryo-EM structure of the Arabidopsis thaliana I+III2 supercomplex (CIII membrane domain)

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, H (C, M)	Cytochrome b	polymer	393	44310.6	2	UniProt (P42792) Pfam (PF00033) Pfam (PF00032)	Arabidopsis thaliana (thale cress)	Complex III subunit 3,Complex III subunit III,Cytochrome b-c1 complex subunit 3,Ubiquinol-cytochrome-c reductase complex cytochrome b subunit
2	B, I (D, N)	Cytochrome b-c1 complex subunit Rieske-1, mitochondrial	polymer	272	29645.6	2	UniProt (Q94JS0) Pfam (PF02921) Pfam (PF00355)	Arabidopsis thaliana (thale cress)	Complex III subunit 5-1,Rieske iron-sulfur protein 1,RISP1,Ubiquinol-cytochrome c reductase iron-sulfur subunit 1
3	C, J (E, O)	Cytochrome c1 2, heme protein, mitochondrial	polymer	307	33728.2	2	UniProt (Q9FKS5) Pfam (PF02167)	Arabidopsis thaliana (thale cress)	Complex III subunit 4-2,Complex III subunit IV-2,Cytochrome b-c1 complex subunit 4-2,Ubiquinol-cytochrome c reductase complex cytochrome c1 subunit 2,Cytochrome c-1 2
4	D, K (G, Q)	Cytochrome b-c1 complex subunit 8-1, mitochondrial	polymer	72	8518.0	2	UniProt (Q9SG91) Pfam (PF10890)	Arabidopsis thaliana (thale cress)	Complex III subunit 8-1,Complex III subunit VIII,Ubiquinol-cytochrome c oxidoreductase subunit 8-1,Ubiquinol-cytochrome c reductase complex ubiquinone-binding protein QP-C
5	E, L (H, R)	Cytochrome b-c1 complex subunit 6-1, mitochondrial	polymer	69	7997.3	2	UniProt (Q0WWE3) Pfam (PF02320)	Arabidopsis thaliana (thale cress)	Complex III subunit 6-1,Complex III subunit VI,Mitochondrial hinge protein,Ubiquinol-cytochrome c oxidoreductase subunit 6-1
6	F, M (I, S)	Cytochrome b-c1 complex subunit 9, mitochondrial	polymer	72	8461.6	2	UniProt (Q9LXJ2) Pfam (PF05365)	Arabidopsis thaliana (thale cress)	Complex III subunit 9,Complex III subunit X,Ubiquinol-cytochrome c oxidoreductase subunit 9
7	G, N (J, T)	Cytochrome b-c1 complex subunit 10, mitochondrial	polymer	57	5980.9	2	UniProt (Q94K78)	Arabidopsis thaliana (thale cress)	Complex III subunit 10,Complex III subunit XI,Ubiquinol-cytochrome c oxidoreductase subunit 10
8	AA, HA, IA, O, P... (E, M, C, O)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	6	Chemie (HEM)
9	JA, Q, R (M, C)	2,3-DIMETHOXY-5-METHYL-6-(3,11,15,19-TETRAMETHYL-EICOSA-2,6,10,14,18-PENTAENYL)-[1,4]BENZOQUINONE	non-polymer		522.8	3	Chemie (UQ5)
10	BA, FA, LA, S, YA... (G, I, M, C, T)	1,2-DIACYL-GLYCEROL-3-SN-PHOSPHATE	non-polymer		705.0	6	Chemie (3PH)
11	CA, MA, T, U (G, M, C)	(1S)-2-{[{[(2R)-2,3-DIHYDROXYPROPYL]OXY}(HYDROXY)PHOSPHORYL]OXY}-1-[(PALMITOYLOXY)METHYL]ETHYL STEARATE	non-polymer		751.0	4	Chemie (PGT)
12	DA, OA, TA, V, W... (G, M, N, C, O...)	CARDIOLIPIN	non-polymer		1464.0	7	Chemie (CDL)
13	EA, PA, UA, X, Z (G, M, N, C, D)	(7S)-4-HYDROXY-N,N,N-TRIMETHYL-9-OXO-7-[(PALMITOYLOXY)METHYL]-3,5,8-TRIOXA-4-PHOSPHAHEXACOSAN-1-AMINIUM 4-OXIDE	non-polymer		763.1	5	Chemie (PC7)
14	SA, Y (N, D)	FE2/S2 (INORGANIC) CLUSTER	non-polymer		175.8	2	Chemie (FES)
15	AB, GA, NA (T, J, M)	PHOSPHATIDYLETHANOLAMINE	non-polymer		734.0	3	Chemie (PTY)
16	KA (M)	UBIQUINONE-7	non-polymer		659.0	1	Chemie (UQ7)
17	QA, RA (M)	2-{[(4-O-alpha-D-glucopyranosyl-alpha-D-glucopyranosyl)oxy]methyl}-4-{[(3beta,9beta,14beta,17beta,25R)-spirost-5-en-3-yl]oxy}butyl 4-O-alpha-D-glucopyranosyl-alpha-D-glucopyranoside	non-polymer		1165.3	2	Chemie (Q7G)
18	BB, CB, DB, EB, FB... (C, D, E, G, H...)	water	water		18.0	744	Chemie (HOH)

Sequence modifications

C, M: 1 - 393 (UniProt: P42792)

PDB	External Database	Details
Ser 40	Pro 40	variant

Contents of the asymmetric unit

Polymers	Number of chains	14
	Total formula weight	277284.6
Non-Polymers*	Number of molecules	39
	Total formula weight	32108.5
All*	Total formula weight	309393.1

*Water molecules are not included.