4Y0U:
reference: Active-Site Plasticity Is Essential to Carbapenem Hydrolysis by OXA-58 Class D beta-Lactamase of Acinetobacter baumannii., Pratap S, Katiki M, Gill P, Kumar P, Golemi-Kotra D, Antimicrob Agents Chemother. 2015 Oct 12;60(1):75-86. doi: 10.1128/AAC.01393-15. PMID: 26459904

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