1GYM:
reference: Crystal structure of phosphatidylinositol-specific phospholipase C from Bacillus cereus in complex with glucosaminyl(alpha 1-->6)-D-myo-inositol, an essential fragment of GPI anchors., Heinz DW, Ryan M, Smith MP, Weaver LH, Keana JF, Griffith OH, Biochemistry 1996 Jul 23;35(29):9496-504. PMID: 8755729

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