2YIU

X-ray structure of the dimeric cytochrome BC1 complex from the soil bacterium paracoccus denitrificans at 2.7 angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D	CYTOCHROME B	polymer	450	51536.2	2	UniProt (P05418) Pfam (PF00033) Pfam (PF00032) In PDB	PARACOCCUS DENITRIFICANS
2	B, E	CYTOCHROME C1, HEME PROTEIN	polymer	263	28491.7	2	UniProt (P13627) Pfam (PF02167) In PDB	PARACOCCUS DENITRIFICANS
3	C, F	UBIQUINOL-CYTOCHROME C REDUCTASE IRON-SULFUR SUBUNIT	polymer	190	20321.5	2	UniProt (P05417) Pfam (PF10399) Pfam (PF00355) In PDB	PARACOCCUS DENITRIFICANS	CYTOCHROME B-C1 COMPLEX SUBUNIT RIESKE, RIESKE IRON-SULFUR PROTEIN, RISP
4	A, D	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	4	Chemie (HEM)
5	A, D	STIGMATELLIN A	non-polymer		514.6	2	Chemie (SMA)
6	B, E	HEME C	non-polymer		618.5	2	Chemie (HEC)
7	C, F	FE2/S2 (INORGANIC) CLUSTER	non-polymer		175.8	2	Chemie (FES)
8		water	water		18.0	6	Chemie (HOH)

Sequence modifications

A, D: 1 - 440 (UniProt: P05418)

PDB	External Database	Details
His 441	-	expression tag
His 442	-	expression tag
His 443	-	expression tag
His 444	-	expression tag
His 445	-	expression tag
His 446	-	expression tag
His 447	-	expression tag
His 448	-	expression tag
His 449	-	expression tag
His 450	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	200698.9
Non-Polymers*	Number of molecules	10
	Total formula weight	5083.9
All*	Total formula weight	205782.8

*Water molecules are not included.