3HLM:
reference: Structure, expression, and function of kynurenine aminotransferases in human and rodent brains., Han Q, Cai T, Tagle DA, Li J, Cell Mol Life Sci. 2010 Feb;67(3):353-68. Epub 2009 Oct 15. PMID: 19826765

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