6WHF

class C beta-lactamase from Escherichia coli in complex with cephalothin

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	Beta-lactamase	polymer	359	39658.1	2	UniProt (Q104Z6) Pfam (PF00144) UniProt (by SIFTS) (P00811)	Escherichia coli
2	C, D, E, F, G... (A, B)	1,2-ETHANEDIOL	non-polymer		62.1	9	Chemie (EDO)
3	H, M (A, B)	(2R)-5-[(acetyloxy)methyl]-2-{(1R)-2-oxo-1-[(thiophen-2-ylacetyl)amino]ethyl}-3,6-dihydro-2H-1,3-thiazine-4-carboxylic acid	non-polymer		398.5	2	Chemie (9EP)
4	N, O (A, B)	water	water		18.0	425	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	79316.2
Non-Polymers*	Number of molecules	11
	Total formula weight	1355.5
All*	Total formula weight	80671.8

*Water molecules are not included.