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Literature summary for 2.4.99.21 extracted from

  • Larkin, A.; Chang, M.M.; Whitworth, G.E.; Imperiali, B.
    Biochemical evidence for an alternate pathway in N-linked glycoprotein biosynthesis (2013), Nat. Chem. Biol., 9, 367-373.
    View publication on PubMedView publication on EuropePMC

Cloned(Commentary)

Cloned (Comment) Organism
overexpression in Escherichia coli with N-terminal T7 and C-terminal His6 tags Methanococcus voltae

Localization

Localization Comment Organism GeneOntology No. Textmining
membrane the recombinant enzyme is purified from membrane fraction from Escherichia coli Methanococcus voltae 16020
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Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
dolichyl phosphooligosaccharide + [flagellum protein FlaB2]-L-asparagine101 Methanococcus voltae the enzyme participates in the N-linked glycosylation in Methanococcus voltae. It catalyzes transfer of oligosaccharides from the dolichyl phosphate donor to asparagine in the acceptor proteins. The activity is dependent on the canonical AsnXaaSer/Thr sequon. Although the full length N-glycan generated by Methanococcus voltae (L-threonyl 2-(acetylamino)-2-deoxy-beta-D-mannuronamido-(1->4)-2,3-bis(acetylamino)-2,3-bis(acetylamino)-2,3-dideoxy-beta-D-glucuronosyl-(1->3)-2-(acetylamino)-2-deoxy-beta-D-glucosyl-[protein]-L-asparagine) is a trisaccharide, the disaccharide-linked substrate is sufficient for oligosaccharyl transferase activity dolichol + flagellum protein FlaB2 with the oligosaccharide chain attached by N-beta-D-glycosyl linkage to a protein L-asparagine
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?

Organism

Organism UniProt Comment Textmining
Methanococcus voltae Q2EMT4
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Purification (Commentary)

Purification (Comment) Organism
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Methanococcus voltae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
dolichyl 3-O-(2,3-diacetamido-2,3-dideoxy-beta-D-glucuronosyl)-N-acetyl-alpha-D-glucosaminyl phosphate + Ac-YKYQESSYK-(4-nitro)F-NH2 the peptide is based on the sequence of the natively glycosylated flagellum protein FlaB2. The enzyme shows no activity with the peptide Ac-YKYQESSYK-(4-nitro)F-NH2, lacking the key asparagine residue. Although the full length N-glycan generated by Methanococcus voltae (L-threonyl 2-(acetylamino)-2-deoxy-beta-D-mannuronamido-(1->4)-2,3-bis(acetylamino)-2,3-bis(acetylamino)-2,3-dideoxy-beta-D-glucuronosyl-(1->3)-2-(acetylamino)-2-deoxy-beta-D-glucosyl-[protein]-L-asparagine) is a trisaccharide the disaccharide-linked substrate is sufficient for oligosaccharyl transferase activity Methanococcus voltae dolichol + ?
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?
dolichyl 3-O-(2,3-diacetamido-2,3-dideoxy-beta-D-glucuronosyl)-N-acetyl-alpha-D-glucosaminyl phosphate + [flagellum protein FlaB2]-L-asparagine the enzyme is incubated with the acceptor peptide Ac-YKYQESSYK-(4-nitro)F-NH2, which is based the natively glycosylated flagellum protein FlaB2 sequence. The activity is dependent on the canonical AsnXaaSer/Thr sequon. Although the full length N-glycan generated by Methanococcus voltae (L-threonyl 2-(acetylamino)-2-deoxy-beta-D-mannuronamido-(1->4)-2,3-bis(acetylamino)-2,3-bis(acetylamino)-2,3-dideoxy-beta-D-glucuronosyl-(1->3)-2-(acetylamino)-2-deoxy-beta-D-glucosyl-[protein]-L-asparagine) is a trisaccharide the disaccharide-linked substrate is sufficient for oligosaccharyl transferase activity Methanococcus voltae dolichol + 3-O-(2,3-diacetamido-2,3-dideoxy-beta-D-glucuronosyl)-N-acetyl-alpha-D-glucosaminyl-[flagellum protein FlaB2]-L-asparagine
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?
dolichyl phosphooligosaccharide + [flagellum protein FlaB2]-L-asparagine101 the enzyme participates in the N-linked glycosylation in Methanococcus voltae. It catalyzes transfer of oligosaccharides from the dolichyl phosphate donor to asparagine in the acceptor proteins. The activity is dependent on the canonical AsnXaaSer/Thr sequon. Although the full length N-glycan generated by Methanococcus voltae (L-threonyl 2-(acetylamino)-2-deoxy-beta-D-mannuronamido-(1->4)-2,3-bis(acetylamino)-2,3-bis(acetylamino)-2,3-dideoxy-beta-D-glucuronosyl-(1->3)-2-(acetylamino)-2-deoxy-beta-D-glucosyl-[protein]-L-asparagine) is a trisaccharide, the disaccharide-linked substrate is sufficient for oligosaccharyl transferase activity Methanococcus voltae dolichol + flagellum protein FlaB2 with the oligosaccharide chain attached by N-beta-D-glycosyl linkage to a protein L-asparagine
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?

Synonyms

Synonyms Comment Organism
AglB
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Methanococcus voltae
archaeal oligosaccharyl transferase
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Methanococcus voltae
dolichyl-monophosphooligosaccharide-protein glycotransferase
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Methanococcus voltae
MVO1749 locus name Methanococcus voltae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
7.5
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assay at Methanococcus voltae

General Information

General Information Comment Organism
metabolism the enzyme participates in the N-linked glycosylation in Methanococcus voltae. It catalyzes transfer of oligosaccharides from the dolichyl phosphate donor to asparagine in the acceptor proteins. Methanococcus voltae generates N-linked glycoproteins with a unique trisaccharide (L-threonyl 2-(acetylamino)-2-deoxy-beta-D-mannuronamido-(1->4)-2,3-bis(acetylamino)-2,3-bis(acetylamino)-2,3-dideoxy-beta-D-glucuronosyl-(1->3)-2-(acetylamino)-2-deoxy-beta-D-glucosyl-[protein]-L-asparagine) Methanococcus voltae