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Template:Infobox gene Alpha-1,3-mannosyltransferase ALG2 is an enzyme that is encoded by the ALG2 gene.[1] Mutations in the human gene are associated with congenital defects in glycosylation [2][3]


This gene encodes a member of the glycosyltransferase 1 family. The encoded protein acts as an alpha 1,3 mannosyltransferase, mannosylating Man(2)GlcNAc(2)-dolichol diphosphate and Man(1)GlcNAc(2)-dolichol diphosphate to form Man(3)GlcNAc(2)-dolichol diphosphate. Defects in this gene have been associated with congenital disorder of glycosylation type Ih (CDG-Ii).[3]


ALG2 has been shown to interact with ANXA7[4] and ANXA11.[4]


  1. Jackson BJ, Kukuruzinska MA, Robbins P (August 1993). "Biosynthesis of asparagine-linked oligosaccharides in Saccharomyces cerevisiae: the alg2 mutation". Glycobiology. 3 (4): 357–64. PMID 8400550. doi:10.1093/glycob/3.4.357. 
  2. Thiel C, Schwarz M, Peng J, Grzmil M, Hasilik M, Braulke T, Kohlschütter A, von Figura K, Lehle L, Körner C (June 2003). "A new type of congenital disorders of glycosylation (CDG-Ii) provides new insights into the early steps of dolichol-linked oligosaccharide biosynthesis". The Journal of Biological Chemistry. 278 (25): 22498–505. PMID 12684507. doi:10.1074/jbc.M302850200. 
  3. 3.0 3.1 "Entrez Gene: ALG2 asparagine-linked glycosylation 2 homolog (S. cerevisiae, alpha-1,3-mannosyltransferase)". 
  4. 4.0 4.1 Satoh H, Nakano Y, Shibata H, Maki M (November 2002). "The penta-EF-hand domain of ALG-2 interacts with amino-terminal domains of both annexin VII and annexin XI in a Ca2+-dependent manner". Biochimica et Biophysica Acta. 1600 (1-2): 61–7. PMID 12445460. doi:10.1016/S1570-9639(02)00445-4. 

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