1KYO

YEAST CYTOCHROME BC1 COMPLEX WITH BOUND SUBSTRATE CYTOCHROME C

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, L	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN I	polymer	430	47358.2	2	UniProt (P07256) Pfam (PF00675) Pfam (PF05193) In PDB	Saccharomyces cerevisiae (baker's yeast)
2	B, M	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX CORE PROTEIN 2	polymer	352	38751.9	2	UniProt (P07257) Pfam (PF00675) In PDB	Saccharomyces cerevisiae (baker's yeast)
3	C, N	CYTOCHROME B	polymer	385	43674.5	2	UniProt (P00163) Pfam (PF00033) Pfam (PF00032) In PDB	Saccharomyces cerevisiae (baker's yeast)
4	D, O	CYTOCHROME C1, HEME PROTEIN	polymer	248	27807.4	2	UniProt (P07143) Pfam (PF02167) In PDB	Saccharomyces cerevisiae (baker's yeast)
5	E, P	UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT	polymer	185	20123.0	2	UniProt (P08067) Pfam (PF02921) Pfam (PF00355) In PDB	Saccharomyces cerevisiae (baker's yeast)	RIESKE IRON-SULFUR PROTEIN, RISP
6	F, Q	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 17 KD PROTEIN	polymer	74	8870.7	2	UniProt (P00127) Pfam (PF02320) In PDB	Saccharomyces cerevisiae (baker's yeast)	MITOCHONDRIAL HINGE PROTEIN, COMPLEX III POLYPEPTIDE VI
7	G, R	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 14 KD PROTEIN	polymer	126	14452.6	2	UniProt (P00128) Pfam (PF02271) In PDB	Saccharomyces cerevisiae (baker's yeast)	COMPLEX III SUBUNIT VII
8	H, S	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX UBIQUINONE-BINDING PROTEIN QP-C	polymer	93	10856.3	2	UniProt (P08525) Pfam (PF02939) In PDB	Saccharomyces cerevisiae (baker's yeast)	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 11 KDA PROTEIN, COMPLEX III SUBUNIT VIII
9	I, T	UBIQUINOL-CYTOCHROME C REDUCTASE COMPLEX 7.3 KD PROTEIN	polymer	57	6507.5	2	UniProt (P22289) Pfam (PF05365) In PDB	Saccharomyces cerevisiae (baker's yeast)	COMPLEX III POLYPEPTIDE IX
10	J, U	HEAVY CHAIN (VH) OF FV-FRAGMENT	polymer	127	14365.8	2		Mus musculus (house mouse)
11	K, V	LIGHT CHAIN (VL) OF FV-FRAGMENT	polymer	107	11926.4	2		Mus musculus (house mouse)
12	W	CYTOCHROME C, ISO-1	polymer	108	12115.9	1	UniProt (P00044) Pfam (PF00034) In PDB	Saccharomyces cerevisiae (baker's yeast)
13	D, N, O, W, C	HEME C	non-polymer		618.5	7	Chemie (HEC)
14	N, C	STIGMATELLIN A	non-polymer		514.6	2	Chemie (SMA)
15	E, P	FE2/S2 (INORGANIC) CLUSTER	non-polymer		175.8	2	Chemie (FES)

Sequence modifications

A, L: 27 - 456 (UniProt: P07256)

PDB	External Database	Details
-	Ser 45	deletion
Asp 152	Glu 153	conflict

C, N: 1 - 385 (UniProt: P00163)

PDB	External Database	Details
Val 270	Asp 270	SEE REMARK 999

F, Q: 74 - 147 (UniProt: P00127)

PDB	External Database	Details
Asp 74	Val 74	conflict

I, T: 2 - 58 (UniProt: P22289)

PDB	External Database	Details
Lys 55	Arg 54	conflict

W: 1 - 108 (UniProt: P00044)

PDB	External Database	Details
M3l 77	Lys 77	modified residue

Contents of the asymmetric unit

Polymers	Number of chains	23
	Total formula weight	501504.4
Non-Polymers*	Number of molecules	11
	Total formula weight	5710.5
All*	Total formula weight	507214.8

*Water molecules are not included.