LARGE family glycosyltransferase is a bifunctional glycosyltransferase containing N-terminal family 8 and C-terminal family 49 glycosyltransferase domains, similar to LARGE xylosyl- and glucuronyltransferase proteins, which exhibit both alpha-1,3-xylosyltransferase and beta-1,3-glucuronyltransferase activities and are involved in the maturation of alpha-dystroglycan
Glycosyltransferase family A (GT-A) includes diverse families of glycosyl transferases with a ...
5-216
6.16e-155
Glycosyltransferase family A (GT-A) includes diverse families of glycosyl transferases with a common GT-A type structural fold; Glycosyltransferases (GTs) are enzymes that synthesize oligosaccharides, polysaccharides, and glycoconjugates by transferring the sugar moiety from an activated nucleotide-sugar donor to an acceptor molecule, which may be a growing oligosaccharide, a lipid, or a protein. Based on the stereochemistry of the donor and acceptor molecules, GTs are classified as either retaining or inverting enzymes. To date, all GT structures adopt one of two possible folds, termed GT-A fold and GT-B fold. This hierarchy includes diverse families of glycosyl transferases with a common GT-A type structural fold, which has two tightly associated beta/alpha/beta domains that tend to form a continuous central sheet of at least eight beta-strands. The majority of the proteins in this superfamily are Glycosyltransferase family 2 (GT-2) proteins. But it also includes families GT-43, GT-6, GT-8, GT13 and GT-7; which are evolutionarily related to GT-2 and share structure similarities.
The actual alignment was detected with superfamily member cd06431:
Pssm-ID: 472172 Cd Length: 280 Bit Score: 444.22 E-value: 6.16e-155
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the ...
272-542
8.25e-55
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the glycosylation of the alpha-dystroglycan subunit. Dystroglycan is an integral member of the skeletal muscular dystrophin glycoprotein complex, which links dystrophin to proteins in the extracellular matrix.
The actual alignment was detected with superfamily member pfam13896:
Pssm-ID: 464027 Cd Length: 327 Bit Score: 187.84 E-value: 8.25e-55
LARGE catalytic domain has closest homology to GT8 glycosyltransferase involved in ...
5-216
6.16e-155
LARGE catalytic domain has closest homology to GT8 glycosyltransferase involved in lipooligosaccharide synthesis; The catalytic domain of LARGE is a putative glycosyltransferase. Mutations of LARGE in mouse and human cause dystroglycanopathies, a disease associated with hypoglycosylation of the membrane protein alpha-dystroglycan (alpha-DG) and consequent loss of extracellular ligand binding. LARGE needs to both physically interact with alpha-dystroglycan and function as a glycosyltransferase in order to stimulate alpha-dystroglycan hyperglycosylation. LARGE localizes to the Golgi apparatus and contains three conserved DxD motifs. While two of the motifs are indispensible for glycosylation function, one is important for localization of th eenzyme. LARGE was originally named because it covers approximately large trunck of genomic DNA, more than 600bp long. The predicted protein structure contains an N-terminal cytoplasmic domain, a transmembrane region, a coiled-coil motif, and two putative catalytic domains. This catalytic domain has closest homology to GT8 glycosyltransferase involved in lipooligosaccharide synthesis.
Pssm-ID: 133053 Cd Length: 280 Bit Score: 444.22 E-value: 6.16e-155
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the ...
272-542
8.25e-55
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the glycosylation of the alpha-dystroglycan subunit. Dystroglycan is an integral member of the skeletal muscular dystrophin glycoprotein complex, which links dystrophin to proteins in the extracellular matrix.
Pssm-ID: 464027 Cd Length: 327 Bit Score: 187.84 E-value: 8.25e-55
Glycosyl transferase family 8; This family includes enzymes that transfer sugar residues to ...
11-185
1.17e-13
Glycosyl transferase family 8; This family includes enzymes that transfer sugar residues to donor molecules. Members of this family are involved in lipopolysaccharide biosynthesis and glycogen synthesis. This family includes Lipopolysaccharide galactosyltransferase, lipopolysaccharide glucosyltransferase 1, and glycogenin glucosyltransferase.
Pssm-ID: 279798 [Multi-domain] Cd Length: 252 Bit Score: 70.81 E-value: 1.17e-13
LARGE catalytic domain has closest homology to GT8 glycosyltransferase involved in ...
5-216
6.16e-155
LARGE catalytic domain has closest homology to GT8 glycosyltransferase involved in lipooligosaccharide synthesis; The catalytic domain of LARGE is a putative glycosyltransferase. Mutations of LARGE in mouse and human cause dystroglycanopathies, a disease associated with hypoglycosylation of the membrane protein alpha-dystroglycan (alpha-DG) and consequent loss of extracellular ligand binding. LARGE needs to both physically interact with alpha-dystroglycan and function as a glycosyltransferase in order to stimulate alpha-dystroglycan hyperglycosylation. LARGE localizes to the Golgi apparatus and contains three conserved DxD motifs. While two of the motifs are indispensible for glycosylation function, one is important for localization of th eenzyme. LARGE was originally named because it covers approximately large trunck of genomic DNA, more than 600bp long. The predicted protein structure contains an N-terminal cytoplasmic domain, a transmembrane region, a coiled-coil motif, and two putative catalytic domains. This catalytic domain has closest homology to GT8 glycosyltransferase involved in lipooligosaccharide synthesis.
Pssm-ID: 133053 Cd Length: 280 Bit Score: 444.22 E-value: 6.16e-155
Members of glycosyltransferase family 8 (GT-8) are involved in lipopolysaccharide biosynthesis ...
5-189
1.41e-59
Members of glycosyltransferase family 8 (GT-8) are involved in lipopolysaccharide biosynthesis and glycogen synthesis; Members of this family are involved in lipopolysaccharide biosynthesis and glycogen synthesis. GT-8 comprises enzymes with a number of known activities: lipopolysaccharide galactosyltransferase, lipopolysaccharide glucosyltransferase 1, glycogenin glucosyltransferase, and N-acetylglucosaminyltransferase. GT-8 enzymes contains a conserved DXD motif which is essential in the coordination of a catalytic divalent cation, most commonly Mn2+.
Pssm-ID: 132996 [Multi-domain] Cd Length: 246 Bit Score: 198.05 E-value: 1.41e-59
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the ...
272-542
8.25e-55
Glycosyl-transferase for dystroglycan; This glycosyl-transferase brings about the glycosylation of the alpha-dystroglycan subunit. Dystroglycan is an integral member of the skeletal muscular dystrophin glycoprotein complex, which links dystrophin to proteins in the extracellular matrix.
Pssm-ID: 464027 Cd Length: 327 Bit Score: 187.84 E-value: 8.25e-55
Glycosyl transferase family 8; This family includes enzymes that transfer sugar residues to ...
11-185
1.17e-13
Glycosyl transferase family 8; This family includes enzymes that transfer sugar residues to donor molecules. Members of this family are involved in lipopolysaccharide biosynthesis and glycogen synthesis. This family includes Lipopolysaccharide galactosyltransferase, lipopolysaccharide glucosyltransferase 1, and glycogenin glucosyltransferase.
Pssm-ID: 279798 [Multi-domain] Cd Length: 252 Bit Score: 70.81 E-value: 1.17e-13
A4GalT_like proteins catalyze the addition of galactose or glucose residues to the ...
9-185
8.51e-10
A4GalT_like proteins catalyze the addition of galactose or glucose residues to the lipooligosaccharide (LOS) or lipopolysaccharide (LPS) of the bacterial cell surface; The members of this family of glycosyltransferases catalyze the addition of galactose or glucose residues to the lipooligosaccharide (LOS) or lipopolysaccharide (LPS) of the bacterial cell surface. The enzymes exhibit broad substrate specificities. The known functions found in this family include: Alpha-1,4-galactosyltransferase, LOS-alpha-1,3-D-galactosyltransferase, UDP-glucose:(galactosyl) LPS alpha1,2-glucosyltransferase, UDP-galactose: (glucosyl) LPS alpha1,2-galactosyltransferase, and UDP-glucose:(glucosyl) LPS alpha1,2-glucosyltransferase. Alpha-1,4-galactosyltransferase from N. meningitidis adds an alpha-galactose from UDP-Gal (the donor) to a terminal lactose (the acceptor) of the LOS structure of outer membrane. LOSs are virulence factors that enable the organism to evade the immune system of host cells. In E. coli, the three alpha-1,2-glycosyltransferases, that are involved in the synthesis of the outer core region of the LPS, are all members of this family. The three enzymes share 40 % of sequence identity, but have different sugar donor or acceptor specificities, representing the structural diversity of LPS.
Pssm-ID: 133037 [Multi-domain] Cd Length: 248 Bit Score: 59.54 E-value: 8.51e-10
GT8_like_2 represents a subfamily of GT8 with unknown function; A subfamily of ...
23-162
1.34e-09
GT8_like_2 represents a subfamily of GT8 with unknown function; A subfamily of glycosyltransferase family 8 with unknown function: Glycosyltransferase family 8 comprises enzymes with a number of known activities; lipopolysaccharide galactosyltransferase lipopolysaccharide glucosyltransferase 1, glycogenin glucosyltransferase and inositol 1-alpha-galactosyltransferase. It is classified as a retaining glycosyltransferase, based on the relative anomeric stereochemistry of the substrate and product in the reaction catalyzed.
Pssm-ID: 133052 Cd Length: 304 Bit Score: 59.40 E-value: 1.34e-09
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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