3H4T:
reference: Chimeric glycosyltransferases for the generation of hybrid glycopeptides., Truman AW, Dias MV, Wu S, Blundell TL, Huang F, Spencer JB, Chem Biol. 2009 Jun 26;16(6):676-85. PMID: 19549605

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