3LK0

X-ray structure of bovine SC0067,Ca(2+)-S100B

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 (A, B, C, D)	Protein S100-B	polymer	90	10414.7	4	UniProt (P02638) Pfam (PF01023) Pfam (PF00036)	Bos taurus (bovine)	S100 calcium-binding protein B, S-100 protein subunit beta, S-100 protein beta chain
2	E, F, G, H, J... (A, B, C, D)	CALCIUM ION	non-polymer		40.1	8	Chemie (CA)
3	I, N (B, D)	3-(2-chloro-10H-phenothiazin-10-yl)-N,N-dimethylpropan-1-amine	non-polymer		318.9	2	Chemie (Z80)
4	O, P, Q, R (A, B, C, D)	water	water		18.0	77	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	41658.9
Non-Polymers*	Number of molecules	10
	Total formula weight	958.4
All*	Total formula weight	42617.2

*Water molecules are not included.