5MLK:
reference: Crystal structure of the essential biotin-dependent carboxylase AccA3 from Mycobacterium tuberculosis., Bennett M, Hogbom M, FEBS Open Bio. 2017 Apr 4;7(5):620-626. doi: 10.1002/2211-5463.12212. eCollection, 2017 May. PMID: 28469974

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