4ESQ:
reference: Structure of the Sensor Domain of Mycobacterium tuberculosis PknH Receptor Kinase Reveals a Conserved Binding Cleft., Cavazos A, Prigozhin DM, Alber T, J Mol Biol. 2012 Jun 20. PMID: 22727744

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