Members of this family are mannosyltransferase enzymes [1-2]. At least some members are localised in endoplasmic reticulum and involved in GPI anchor biosynthesis [3-4].

1: A mannosyltransferase gene at 11q23 is disrupted by a translocation breakpoint that co-segregates with bipolar affective disorder in a small family. Baysal BE, Willett-Brozick JE, Badner JA, Corona W, Ferrell RE, Nimgaonkar VL, Detera-Wadleigh SD; Neurogenetics 2002;4:43-53. PMID:12030331

2: Common origin and evolution of glycosyltransferases using Dol-P-monosaccharides as donor substrate. Oriol R, Martinez-Duncker I, Chantret I, Mollicone R, Codogno P; Mol Biol Evol 2002;19:1451-1463. PMID:12200473

3: Critical roles of glycosylphosphatidylinositol for Trypanosoma brucei. Nagamune K, Nozaki T, Maeda Y, Ohishi K, Fukuma T, Hara T, Schwarz RT, Sutterlin C, Brun R, Riezman H, Kinoshita T; Proc Natl Acad Sci U S A 2000;97:10336-10341. PMID:10954751

4: Saccharomyces cerevisiae GPI10, the functional homologue of human PIG-B, is required for glycosylphosphatidylinositol-anchor synthesis. Sutterlin C, Escribano MV, Gerold P, Maeda Y, Mazon MJ, Kinoshita T, Schwarz RT, Riezman H; Biochem J 1998;332:153-159. PMID:9576863