1QIA

CRYSTAL STRUCTURE OF STROMELYSIN CATALYTIC DOMAIN

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)	STROMELYSIN-1	polymer	162	18180.2	4	UniProt (P08254) Pfam (PF00413)	Homo sapiens (human)	MATRIX METALLOPROTEINASE-3
2	E, F, J, K, O... (A, B, C, D)	ZINC ION	non-polymer		65.4	8	Chemie (ZN)
3	G, H, I, L, M... (A, B, C, D)	CALCIUM ION	non-polymer		40.1	12	Chemie (CA)
4	AA, BA, Y, Z (C, D, A, B)	water	water		18.0	652	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	72720.9
Non-Polymers*	Number of molecules	20
	Total formula weight	1004.2
All*	Total formula weight	73725.1

*Water molecules are not included.