5FQA:
reference: Use of ferrous iron by metallo-beta-lactamases., Cahill ST, Tarhonskaya H, Rydzik AM, Flashman E, McDonough MA, Schofield CJ, Brem J, J Inorg Biochem. 2016 Jul 26. pii: S0162-0134(16)30214-8. doi:, 10.1016/j.jinorgbio.2016.07.013. PMID: 27498591

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