5OHX:
reference: Crystal structure of cystathionine beta-synthase from honeybee Apis mellifera., Gimenez-Mascarell P, Majtan T, Oyenarte I, Ereno-Orbea J, Majtan J, Klaudiny J, Kraus JP, Martinez-Cruz LA, J Struct Biol. 2017 Dec 21. pii: S1047-8477(17)30231-9. doi:, 10.1016/j.jsb.2017.12.008. PMID: 29275181

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