2XF3

Structural and mechanistic studies on a cephalosporin esterase from the clavulanic acid biosynthesis pathway

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	ORF12	polymer	458	49901.6	2	UniProt (Q83Z62) Pfam (PF18042) Pfam (PF13354) UniProt (by SIFTS) (Q8KRB7) In PDB	STREPTOMYCES CLAVULIGERUS	CEPHALOSPORIN ESTERASE
2	A, B	(2R,3Z,5R)-3-(2-HYDROXYETHYLIDENE)-7-OXO-4-OXA-1-AZABICYCLO[3.2.0]HEPTANE-2-CARBOXYLIC ACID	non-polymer		199.2	4	Chemie (J01)
3		water	water		18.0	1139	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	99803.2
Non-Polymers*	Number of molecules	4
	Total formula weight	796.6
All*	Total formula weight	100599.8

*Water molecules are not included.