2WLC:
reference: Structural and kinetic characterizations of the polysialic acid O-acetyltransferase OatWY from Neisseria meningitidis., Lee HJ, Rakic B, Gilbert M, Wakarchuk WW, Withers SG, Strynadka NC, J Biol Chem. 2009 Jun 12. PMID: 19525232

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