3MK7

The structure of CBB3 cytochrome oxidase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, D, G, K	Cytochrome c oxidase, cbb3-type, subunit N	polymer	474	52829.6	4	Pfam (PF00115) UniProt (by SIFTS) (D9IA43) In PDB	Pseudomonas stutzeri
2	B, E, H, L	Cytochrome c oxidase, cbb3-type, subunit O	polymer	203	22842.1	4	Pfam (PF02433) UniProt (by SIFTS) (D9IA44) In PDB	Pseudomonas stutzeri
3	C, F, I, M	Cytochrome c oxidase, cbb3-type, subunit P	polymer	311	33691.1	4	Pfam (PF14715) Pfam (PF13442) UniProt (by SIFTS) (D9IA45) In PDB	Pseudomonas stutzeri
4	U, X, Y, Z	30-mer peptide	polymer	30	2571.2	4		Pseudomonas stutzeri
5	D, G, A, K	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	8	Chemie (HEM)
6	D, G, A, K	COPPER (II) ION	non-polymer		63.5	4	Chemie (CU)
7	K, D, E, G, A...	CALCIUM ION	non-polymer		40.1	8	Chemie (CA)
8	K, D, G, A	HYDROGEN PEROXIDE	non-polymer		34.0	4	Chemie (PEO)
9	K, D, G, A	PHOSPHATE ION	non-polymer		95.0	4	Chemie (PO4)
10	L, M, E, F, H...	HEME C	non-polymer		618.5	12	Chemie (HEC)
11	C, M, F, I	HEXACYANOFERRATE(3-)	non-polymer		211.9	4	Chemie (FC6)

Contents of the asymmetric unit

Polymers	Number of chains	16
	Total formula weight	447735.8
Non-Polymers*	Number of molecules	44
	Total formula weight	14292.5
All*	Total formula weight	462028.3

*Water molecules are not included.