5CTN

Structure of BPu1 beta-lactamase

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Beta-lactamase	polymer	233	27314.2	2	UniProt (A8FFI9) Pfam (PF00905) In PDB	Bacillus pumilus
2	A, B	(2~{S},3~{R})-3-methyl-2-[(2~{S},3~{R})-3-oxidanyl-1-oxidanylidene-butan-2-yl]-4-[(3~{S},5~{S})-5-[(sulfamoylamino)methyl]pyrrolidin-3-yl]sulfanyl-3,4-dihydro-2~{H}-pyrrole-5-carboxylic acid	non-polymer		422.5	2	Chemie (5R7)
3	A	CITRATE ANION	non-polymer		189.1	1	Chemie (FLC)
4		water	water		18.0	419	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	54628.3
Non-Polymers*	Number of molecules	3
	Total formula weight	1034.1
All*	Total formula weight	55662.5

*Water molecules are not included.