3FN9

Crystal structure of putative beta-galactosidase from bacteroides fragilis

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	Putative beta-galactosidase	polymer	692	79344.9	4	UniProt (Q5LJ68) Pfam (PF02837) Pfam (PF00703) Pfam (PF02836) In PDB	Bacteroides fragilis
2	A, C, D	CHLORIDE ION	non-polymer		35.5	7	Chemie (CL)
3		water	water		18.0	92	Chemie (HOH)

Sequence modifications

A, B, C, D: 23 - 703 (UniProt: Q5LJ68)

PDB	External Database	Details
Met 20	-	expression tag
Ser 21	-	expression tag
Leu 22	-	expression tag
Glu 704	-	expression tag
Gly 705	-	expression tag
His 706	-	expression tag
His 707	-	expression tag
His 708	-	expression tag
His 709	-	expression tag
His 710	-	expression tag
His 711	-	expression tag

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	317379.7
Non-Polymers*	Number of molecules	7
	Total formula weight	248.2
All*	Total formula weight	317627.9

*Water molecules are not included.