4D1T:
reference: His224 alters the R2 drug binding site and Phe218 influences the catalytic efficiency in the metallo-beta-lactamase VIM-7., Leiros HK, Skagseth S, Edvardsen KS, Lorentzen MS, Bjerga GE, Leiros I, Samuelsen O, Antimicrob Agents Chemother. 2014 Jun 9. pii: AAC.02735-13. PMID: 24913158

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).