| EC |
2.4.1.344 |
| Accepted name: |
type 2 galactoside α-(1,2)-fucosyltransferase |
| Reaction: |
GDP-β-L-fucose + β-D-galactosyl-(1→4)-N-acetyl-β-D-glucosaminyl-R = GDP + α-L-fucosyl-(1→2)-β-D-galactosyl-(1→4)-N-acetyl-β-D-glucosaminyl-R |
| Other name(s): |
blood group H α-2-fucosyltransferase (ambiguous); guanosine diphosphofucose-galactoside 2-L-fucosyltransferase (ambiguous); α-(1→2)-L-fucosyltransferase (ambiguous); α-2-fucosyltransferase (ambiguous); α-2-L-fucosyltransferase (ambiguous); blood-group substance H-dependent fucosyltransferase (ambiguous); guanosine diphosphofucose-glycoprotein 2-α-fucosyltransferase (ambiguous); guanosine diphosphofucose-lactose fucosyltransferase; GDP fucose-lactose fucosyltransferase; guanosine diphospho-L-fucose-lactose fucosyltransferase; guanosine diphosphofucose-β-D-galactosyl-α-2-L-fucosyltransferase (ambiguous); guanosine diphosphofucose-galactosylacetylglucosaminylgalactosylglucosylceramide α-L-fucosyltransferase (ambiguous); guanosine diphosphofucose-glycoprotein 2-α-L-fucosyltransferase (ambiguous); H-gene-encoded β-galactoside α(1→2)fucosyltransferase; β-galactoside α(1→2)fucosyltransferase (ambiguous); GDP-L-fucose:lactose fucosyltransferase; GDP-β-L-fucose:β-D-galactosyl-R 2-α-L-fucosyltransferase (ambiguous); FUT1 (gene name); FUT2 (gene name) |
| Systematic name: |
GDP-β-L-fucose:β-D-galactosyl-(1→4)-N-acetyl-β-D-glucosaminyl-R α-(1,2)-L-fucosyltransferase (configuration-inverting) |
| Comments: |
The enzyme acts on a glycoconjugates where R (see reaction) is a glycoprotein or glycosphingolipid. The recognized moiety of the substrate is known as a type 2 histo-blood group antigen precursor disaccharide, and the action of the enzyme produces an H type 2 antigen. Humans possess two enzymes able to catalyse this reaction, encoded by the FUT1 and FUT2 genes (also known as the H and Secretor genes, respectively), but only FUT1 is expressed in red blood cells. cf. EC 2.4.1.69, type 1 galactoside α-(1,2)-fucosyltransferase. |
| Links to other databases: |
BRENDA, EXPASY, Gene, KEGG, MetaCyc |
| References: |
| 1. |
Basu, S., Basu, M. and Chien, J.L. Enzymatic synthesis of a blood group H-related glycosphingolipid by an α-fucosyltransferase from bovine spleen. J. Biol. Chem. 250 (1975) 2956–2962. [PMID: 804484] |
| 2. |
Grollman, A.P. GDP-L-fucose:lactose fucosyltransferase from mammary gland. Methods Enzymol. 8 (1966) 351–353. |
| 3. |
Ernst, L.K., Rajan, V.P., Larsen, R.D., Ruff, M.M. and Lowe, J.B. Stable expression of blood group H determinants and GDP-L-fucose: β-D-galactoside 2-α-L-fucosyltransferase in mouse cells after transfection with human DNA. J. Biol. Chem. 264 (1989) 3436–3447. [PMID: 2464598] |
| 4. |
Larsen, R.D., Ernst, L.K., Nair, R.P. and Lowe, J.B. Molecular cloning, sequence, and expression of a human GDP-L-fucose:β-D-galactoside 2-α-L-fucosyltransferase cDNA that can form the H blood group antigen. Proc. Natl. Acad. Sci. USA 87 (1990) 6674–6678. [DOI] [PMID: 2118655] |
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| [EC 2.4.1.344 created 2017] |
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