2IY8:
reference: Structural analysis of sialyltransferase PM0188 from Pasteurella multocida complexed with donor analogue and acceptor sugar., Kim DU, Yoo JH, Lee YJ, Kim KS, Cho HS, BMB Rep. 2008 Jan 31;41(1):48-54. PMID: 18304450

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