Glycoprotein-fucosylgalactoside a-N-acetylgalactosaminyltransferase

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glycoprotein-fucosylgalactoside alpha-N-acetylgalactosaminyltransferase
Identifiers
EC no. 2.4.1.40
CAS no. 9067-69-0
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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PMC articles
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NCBI proteins

In enzymology, a glycoprotein-fucosylgalactoside alpha-N-acetylgalactosaminyltransferase (EC 2.4.1.40) is an enzyme that catalyzes the chemical reaction

UDP-N-acetyl-D-galactosamine + glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose UDP + glycoprotein-N-acetyl-alpha-D-galactosaminyl-(1,3)-[alpha-L-fucosyl- (1,2)]-D-galactose

Thus, the two substrates of this enzyme are UDP-N-acetyl-D-galactosamine and glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose, whereas its 3 products are UDP, [[glycoprotein-N-acetyl-alpha-D-galactosaminyl-(1,3)-[alpha-L-fucosyl-]], and [[(1,2)]-D-galactose]].

This enzyme belongs to the family of transferases, specifically those glycosyltransferases hexosyltransferases. The systematic name of this enzyme class is UDP-N-acetyl-D-galactosamine:glycoprotein-alpha-L-fucosyl-(1,2)-D-ga lactose 3-N-acetyl-D-galactosaminyltransferase. Other names in common use include A-transferase, histo-blood group A glycosyltransferase, (Fucalpha1→2Galalpha1→3-N-acetylgalactosaminyltransferase), UDP-GalNAc:Fucalpha1→2Galalpha1→3-N-acetylgalactosaminyltransferase, alpha-3-N-acetylgalactosaminyltransferase, blood-group substance alpha-acetyltransferase, blood-group substance A-dependent acetylgalactosaminyltransferase, fucosylgalactose acetylgalactosaminyltransferase, histo-blood group A acetylgalactosaminyltransferase, histo-blood group A transferase, UDP-N-acetyl-D-galactosamine:alpha-L-fucosyl-1,2-D-galactose, and 3-N-acetyl-D-galactosaminyltransferase. This enzyme participates in 3 metabolic pathways: the lactoseries and neolactoseries of glycosphingolipid biosynthesis, as well as the biosynthesis of glycan structures.

Structural studies

As of late 2007, 19 structures have been solved for this class of enzymes, with PDB accession codes 1LZ0, 1LZI, 1R7T, 1R7V, 1R7Y, 1R81, 1WSZ, 1WT0, 1WT1, 1WT2, 1WT3, 1XZ6, 1ZHJ, 1ZI1, 1ZI3, 1ZI4, 1ZI5, 1ZJO, and 2A8W.

Related Research Articles

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In enzymology, a fucosylgalactoside 3-alpha-galactosyltransferase is an enzyme that catalyzes the chemical reaction

In enzymology, a ganglioside galactosyltransferase is an enzyme that catalyzes the chemical reaction

In enzymology, a globoside alpha-N-acetylgalactosaminyltransferase is an enzyme that catalyzes the chemical reaction

In enzymology, a globotriaosylceramide 3-beta-N-acetylgalactosaminyltransferase is an enzyme that catalyzes the chemical reaction

In enzymology, a glycoprotein-N-acetylgalactosamine 3-beta-galactosyltransferase is an enzyme that catalyzes the chemical reaction

In enzymology, a polypeptide N-acetylgalactosaminyltransferase is an enzyme that catalyzes the chemical reaction

<span class="mw-page-title-main">GALNT1</span> Protein-coding gene in the species Homo sapiens

Polypeptide N-acetylgalactosaminyltransferase 1 is an enzyme that in humans is encoded by the GALNT1 gene.

<span class="mw-page-title-main">B3GALNT1</span> Gene of the species Homo sapiens

UDP-GalNAc:beta-1,3-N-acetylgalactosaminyltransferase 1 is an enzyme that in humans is encoded by the B3GALNT1 gene.

<span class="mw-page-title-main">ABO (gene)</span> Protein-coding gene in the species Homo sapiens

Histo-blood group ABO system transferase is an enzyme with glycosyltransferase activity, which is encoded by the ABO gene in humans. It is ubiquitously expressed in many tissues and cell types. ABO determines the ABO blood group of an individual by modifying the oligosaccharides on cell surface glycoproteins. Variations in the sequence of the protein between individuals determine the type of modification and the blood group. The ABO gene also contains one of 27 SNPs associated with increased risk of coronary artery disease.

<span class="mw-page-title-main">B4GALNT2</span> Protein-coding gene in the species Homo sapiens

Beta-1,4 N-acetylgalactosaminyltransferase 2 is an enzyme that in humans is encoded by the B4GALNT2 gene.

(N-acetylneuraminyl)-galactosylglucosylceramide N-acetylgalactosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-D-galactosamine:1-O-(O- - -O-beta-D-galactopyranosyl- -beta-D-glucopyranosyl)-ceramide 4-beta-N-acetyl-D-galactosaminyltransferase. This enzyme catalyses the following chemical reaction:

Beta-1,3-galactosyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-D-glucosamine:O-glycosyl-glycoprotein 6-beta-N-acetyl-D-glucosaminyltransferase. This enzyme catalyses the following chemical reaction

Acetylgalactosaminyl-O-glycosyl-glycoprotein beta-1,6-N-acetylglucosaminyltransferase (EC 2.4.1.148 with systematic name UDP-N-acetyl-D-glucosamine:N-acetyl-beta-D-glucosaminyl- -N-acetyl-D-galactosaminyl-R 6-beta-N-acetyl-D-glucosaminyltransferase. This enzyme catalyses the following chemical reaction

N-acetylneuraminylgalactosylglucosylceramide beta-1,4-N-acetylgalactosaminyltransferase (EC 2.4.1.165, is an enzyme that catalyses the following chemical reaction:

Glucuronylgalactosylproteoglycan 4-beta-N-acetylgalactosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-D-galactosamine:D-glucuronyl-(1->3)-beta-D-galactosyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase. This enzyme catalyses the following chemical reaction

Glucuronosyl-N-acetylgalactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-D-galactosamine:beta-D-glucuronosyl-(1->3)-N-acetyl-beta-D-galactosaminyl-proteoglycan 4-beta-N-acetylgalactosaminyltransferase. This enzyme catalyses the following chemical reaction

N,N'-diacetylbacillosaminyl-diphospho-undecaprenol alpha-1,3-N-acetylgalactosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-alpha-D-galactosamine:N,N'-diacetyl-alpha-D-bacillosaminyl-diphospho-tritrans,heptacis-undecaprenol 3-alpha-N-acetyl-D-galactosaminyltransferase. This enzyme catalyses the following chemical reaction

N-acetylgalactosamine-N, N'-diacetylbacillosaminyl-diphospho-undecaprenol 4-alpha-N-acetylgalactosaminyltransferase is an enzyme with systematic name UDP-N-acetyl-alpha-D-galactosamine:N-acetylgalactosaminyl-alpha-(1->3)-N,N'-diacetyl-alpha-D-bacillosaminyl-diphospho-tritrans,heptacis-undecaprenol 3-alpha-N-acetyl-D-galactosaminyltransferase. This enzyme catalyses the following chemical reaction

References


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