3TTY

Crystal structure of beta-galactosidase from Bacillus circulans sp. alkalophilus in complex with galactose

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... (A, B, C, D, E...)	Beta-galactosidase	polymer	675	77413.4	6		Bacillus circulans subsp. alkalophilus	Beta-gal
2	G, I, K, M, O... (A, B, C, D, E...)	ZINC ION	non-polymer		65.4	6	Chemie (ZN)
3	H, J, L, N, P... (A, B, C, D, E...)	alpha-D-galactopyranose	non-polymer		180.2	6	Chemie (GLA)
4	S, T, U, V, W... (A, B, C, D, E...)	water	water		18.0	2516	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	6
	Total formula weight	464480.2
Non-Polymers*	Number of molecules	12
	Total formula weight	1473.4
All*	Total formula weight	465953.5

*Water molecules are not included.