5HHT:
reference: Structural Analysis of an Evolved Transketolase Reveals Divergent Binding Modes., Affaticati PE, Dai SB, Payongsri P, Hailes HC, Tittmann K, Dalby PA, Sci Rep. 2016 Oct 21;6:35716. doi: 10.1038/srep35716. PMID: 27767080

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