1CRC

CYTOCHROME C AT LOW IONIC STRENGTH

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 C	polymer	105	11751.6	2	UniProt (P00004) Pfam (PF00034)	Equus caballus (horse)
2	C, D (A, B)	HEME C	non-polymer		618.5	2	Chemie (HEC)
3	E, F (A, B)	water	water		18.0	120	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	23503.3
Non-Polymers*	Number of molecules	2
	Total formula weight	1237.0
All*	Total formula weight	24740.3

*Water molecules are not included.