Biology:3-Galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase
| 3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Identifiers | |||||||||
| EC number | 2.4.1.65 | ||||||||
| CAS number | 37277-69-3 | ||||||||
| Databases | |||||||||
| IntEnz | IntEnz view | ||||||||
| BRENDA | BRENDA entry | ||||||||
| ExPASy | NiceZyme view | ||||||||
| KEGG | KEGG entry | ||||||||
| MetaCyc | metabolic pathway | ||||||||
| PRIAM | profile | ||||||||
| PDB structures | RCSB PDB PDBe PDBsum | ||||||||
| Gene Ontology | AmiGO / QuickGO | ||||||||
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In enzymology, a 3-galactosyl-N-acetylglucosaminide 4-alpha-L-fucosyltransferase (EC 2.4.1.65) is an enzyme that catalyzes the chemical reaction
- GDP-beta-L-fucose + beta-D-galactosyl-(1->3)-N-acetyl-D-glucosaminyl-R [math]\displaystyle{ \rightleftharpoons }[/math] GDP + beta-D-galactosyl-(1->3)-[alpha-L-fucosyl-(1->4)]-N-acetyl-beta-D- glucosaminyl-R
Thus, the two substrates of this enzyme are GDP-beta-L-fucose and beta-D-galactosyl-(1->3)-N-acetyl-D-glucosaminyl-R, whereas its 3 products are GDP, beta-D-galactosyl-(1->3)-[alpha-L-fucosyl-(1->4)]-N-acetyl-beta-D-, and glucosaminyl-R.
This enzyme participates in 3 metabolic pathways: glycosphingolipid biosynthesis - lactoseries, glycosphingolipid biosynthesis - neo-lactoseries, and glycan structures - biosynthesis 2.
Nomenclature
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is GDP-L-fucose:3-beta-D-galactosyl-N-acetyl-D-glucosaminyl-R 4I-alpha-L-fucosyltransferase. Other names in common use include:
- (Lea)-dependent (alpha-3/4)-fucosyltransferase,
- alpha(1,3/1,4) fucosyltransferase III,
- alpha-(1->4)-L-fucosyltransferase,
- alpha-4-L-fucosyltransferase,
- beta-acetylglucosaminylsaccharide fucosyltransferase,
- FucT-II,
- Lewis alpha-(1->3/4)-fucosyltransferase,
- Lewis blood group alpha-(1->3/4)-fucosyltransferase,
- Lewis(Le) blood group gene-dependent,
- alpha-(1->3/4)-L-fucosyltransferase,
- blood group Lewis alpha-4-fucosyltransferase,
- blood-group substance Lea-dependent fucosyltransferase,
- guanosine diphosphofucose-beta-acetylglucosaminylsaccharide,
- 4-alpha-L-fucosyltransferase,
- guanosine diphosphofucose-glycoprotein 4-alpha-L-fucosyltransferase,
- guanosine diphosphofucose-glycoprotein 4-alpha-fucosyltransferase,
- 3-alpha-galactosyl-N-acetylglucosaminide,
- 4-alpha-L-fucosyltransferase,
- GDP-beta-L-fucose:3-beta-D-galactosyl-N-acetyl-D-glucosaminyl-R, and 4I-alpha-L-fucosyltransferase.
References
- "Co-purification of the Lewis blood group N-acetylglucosaminide alpha 1 goes to 4 fucosyltransferase and an N-acetylglucosaminide alpha 1 goes to 3 fucosyltransferase from human milk". The Journal of Biological Chemistry 256 (20): 10456–63. October 1981. PMID 7287719.
- "Cloning and characterization of the alpha(1,3/4) fucosyltransferase of Helicobacter pylori". The Journal of Biological Chemistry 275 (7): 4988–94. February 2000. doi:10.1074/jbc.275.7.4988. PMID 10671538.
- "Identification of a cDNA encoding a plant Lewis-type alpha1,4-fucosyltransferase". Glycoconjugate Journal 18 (6): 439–47. June 2001. doi:10.1023/A:1016030000527. PMID 12084979.
- "C-terminal amino acids of Helicobacter pylori alpha1,3/4 fucosyltransferases determine type I and type II transfer". The Journal of Biological Chemistry 278 (24): 21893–900. June 2003. doi:10.1074/jbc.M301704200. PMID 12676935.
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