2.4.1.252: GDP-mannose:cellobiosyl-diphosphopolyprenol alpha-mannosyltransferase
This is an abbreviated version!
For detailed information about GDP-mannose:cellobiosyl-diphosphopolyprenol alpha-mannosyltransferase, go to the full flat file.
Reaction
Synonyms
AceA, alpha-mannosyltransferase AceA, GDP-mannosyltransferase, gumH
ECTree
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Natural Substrates Products
Natural Substrates Products on EC 2.4.1.252 - GDP-mannose:cellobiosyl-diphosphopolyprenol alpha-mannosyltransferase
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REACTION DIAGRAM
GDP-mannose + D-Glc-beta-(1->4)-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol
GDP + D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol
GDP-mannose + D-Glc-beta-(1->4)-Glc-alpha-1-diphosphopolyprenol
GDP + D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphosphopolyprenol
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the enzyme is involved in biosynthesis of xanthan
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?
additional information
additional information
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GumH is involved in biosynthesis of the pentasaccharide repeating unit of xanthan. It is suggested that the wild-type Xanthomonas oryzae-produced xanthan is assembled by the sequential addition of UDP-glucose, UDP-glucose, GDP-mannose, UDPglucuronic acid, and GDP-mannose onto a polyprenol phosphate carrier, by the glycosyltransferase homologues encoded by the gumD, gumM, gumH, gumK, and gumI genes, respectively
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?
GDP + D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol
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?
GDP-mannose + D-Glc-beta-(1->4)-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol
GDP + D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol
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the enzyme is involved in the biosynthesis of the exopolysaccharide acetan
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?