1G8M:
reference: Crystal structure of a bifunctional transformylase and cyclohydrolase enzyme in purine biosynthesis., Greasley SE, Horton P, Ramcharan J, Beardsley GP, Benkovic SJ, Wilson IA, Nat Struct Biol 2001 May;8(5):402-6. PMID: 11323713

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