6DGU

PER-2 class A extended-spectrum beta-lactamase crystal structure at 2.69 Angstrom resolution

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	B, A, C, D	Beta-lactamase	polymer	281	30670.0	4	UniProt (A2RP81) Pfam (PF00144) Pfam (PF13354) In PDB	Citrobacter freundii
2		water	water		18.0	174	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	4
	Total formula weight	122680.2
All*	Total formula weight	122680.2

*Water molecules are not included.