2IXT

SPHERICASE

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)	36KDA PROTEASE	polymer	310	31864.7	2	UniProt (Q9S3L6) Pfam (PF00082)	BACILLUS SPHAERICUS
2	C, D, E, F, G... (A, B)	CALCIUM ION	non-polymer		40.1	10	Chemie (CA)
3	M, N (A, B)	water	water		18.0	1012	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	63729.3
Non-Polymers*	Number of molecules	10
	Total formula weight	400.8
All*	Total formula weight	64130.1

*Water molecules are not included.