4DIR

2.6 Angstrom X-ray structure of human CA(2+)-S100A5

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)	Protein S100-A5	polymer	92	10759.4	2	UniProt (P33763) Pfam (PF01023)	Homo sapiens (human)	Protein S-100D, S100 calcium-binding protein A5
2	C, D, E, F (A, B)	CALCIUM ION	non-polymer		40.1	4	Chemie (CA)
3	G, H (A, B)	water	water		18.0	14	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	21518.8
Non-Polymers*	Number of molecules	4
	Total formula weight	160.3
All*	Total formula weight	21679.2

*Water molecules are not included.