https://www.ncbi.nlm.nih.gov/Structure/pdb/4NQ5
4NQ5: Bacillus cereus Zn-dependent metallo-beta-lactamase at pH 7 complexed with compound CS319
Beta-lactamase 2(3R,5R,7aS)-5-(sulfanylmethyl)tetrahydro[1,3]thiazolo[4,3-b][1,3]thiazole-3-carboxylic acidPOTASSIUM IONZINC ION