3S4X:
reference: Structural analysis of the Asn152Gly mutant of P99 cephalosporinase., Ruble JF, Lefurgy ST, Cornish VW, Powers RA, Acta Crystallogr D Biol Crystallogr. 2012 Sep;68(Pt 9):1189-93. doi:, 10.1107/S0907444912024080. Epub 2012 Aug 18. PMID: 22948919

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