4QR8

Crystal Structure of E coli pepQ

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B	Xaa-Pro dipeptidase	polymer	443	50235.0	2	UniProt (P21165) Pfam (PF21216) Pfam (PF00557) In PDB	Escherichia coli	X-Pro dipeptidase, Imidodipeptidase, Proline dipeptidase, Prolidase
2	A, B	MAGNESIUM ION	non-polymer		24.3	4	Chemie (MG)
3		water	water		18.0	1314	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	100469.9
Non-Polymers*	Number of molecules	4
	Total formula weight	97.2
All*	Total formula weight	100567.2

*Water molecules are not included.