7PKF

C-reactive protein decamer at pH 5

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B, C, D, E... (J, F, G, H, I...)	C-reactive protein	polymer	206	23068.0	10	UniProt (P02741) Pfam (PF00354)	Homo sapiens (Human)
2	AA, BA, CA, DA, K... (B, A, J, F, G...)	CALCIUM ION	non-polymer		40.1	20	Chemie (CA)
3	EA, FA, GA, HA, IA... (J, F, G, H, I...)	water	water		18.0	10	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	10
	Total formula weight	230680.4
Non-Polymers*	Number of molecules	20
	Total formula weight	801.6
All*	Total formula weight	231482.0

*Water molecules are not included.