6M5P

A class C 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	Beta-lactamase	polymer	370	40697.3	1	UniProt (Q9XB24) Pfam (PF00144) In PDB	Klebsiella pneumoniae
2	A	(4R,5S)-3-{[(3S,5S)-5-(dimethylcarbamoyl)pyrrolidin-3-yl]sulfanyl}-5-[(2S,3R)-3-hydroxy-1-oxobutan-2-yl]-4-methyl-4,5-d ihydro-1H-pyrrole-2-carboxylic acid	non-polymer		385.5	1	Chemie (MER)
3		water	water		18.0	348	Chemie (HOH)

Sequence modifications

A: 1 - 363 (UniProt: Q9XB24)

PDB	External Database	Details
Met -6	-	initiating methionine
His -5	-	expression tag
His -4	-	expression tag
His -3	-	expression tag
His -2	-	expression tag
His -1	-	expression tag
His 0	-	expression tag
Phe 149	Tyr 172	engineered mutation

Contents of the asymmetric unit

Polymers	Number of chains	1
	Total formula weight	40697.3
Non-Polymers*	Number of molecules	1
	Total formula weight	385.5
All*	Total formula weight	41082.8

*Water molecules are not included.