3FUA:
reference: Catalytic mechanism of the metal-dependent fuculose aldolase from Escherichia coli as derived from the structure., Dreyer MK, Schulz GE, J Mol Biol 1996 Jun 14;259(3):458-66. PMID: 8676381

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