3BGA

Crystal structure of beta-galactosidase from Bacteroides thetaiotaomicron VPI-5482

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)	Beta-galactosidase	polymer	1010	116190.4	2	UniProt (Q8A799) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) Pfam (PF16353) Pfam (PF02929)	Bacteroides thetaiotaomicron VPI-5482
2	C, G (A, B)	MAGNESIUM ION	non-polymer		24.3	2	Chemie (MG)
3	D, E, H, I (A, B)	SODIUM ION	non-polymer		23.0	4	Chemie (NA)
4	F, J (A, B)	CHLORIDE ION	non-polymer		35.5	2	Chemie (CL)
5	K, L (A, B)	water	water		18.0	1137	Chemie (HOH)

Sequence modifications

A, B: 24 - 1022 (UniProt: Q8A799)

PDB	External Database	Details
Mse 21	-	expression tag
Ser 22	-	expression tag
Leu 23	-	expression tag
Glu 1023	-	expression tag
Gly 1024	-	expression tag
His 1025	-	expression tag
His 1026	-	expression tag
His 1027	-	expression tag
His 1028	-	expression tag
His 1029	-	expression tag
His 1030	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	232380.8
Non-Polymers*	Number of molecules	8
	Total formula weight	211.5
All*	Total formula weight	232592.3

*Water molecules are not included.