256B

IMPROVEMENT OF THE 2.5 ANGSTROMS RESOLUTION MODEL OF CYTOCHROME B562 BY REDETERMINING THE PRIMARY STRUCTURE AND USING MOLECULAR GRAPHICS

Replaces:  156B

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	CYTOCHROME B562	polymer	106	11799.2	2	UniProt (P0ABE7) Pfam (PF07361)	Escherichia coli
2	C, D, F, G (A, B)	SULFATE ION	non-polymer		96.1	4	Chemie (SO4)
3	E, H (A, B)	PROTOPORPHYRIN IX CONTAINING FE	non-polymer		616.5	2	Chemie (HEM)
4	I, J (A, B)	water	water		18.0	165	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	23598.5
Non-Polymers*	Number of molecules	6
	Total formula weight	1617.2
All*	Total formula weight	25215.7

*Water molecules are not included.