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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

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

Synonyms

AceA, alpha-mannosyltransferase AceA, GDP-mannosyltransferase, gumH

ECTree

     2 Transferases
         2.4 Glycosyltransferases
             2.4.1 Hexosyltransferases
                2.4.1.252 GDP-mannose:cellobiosyl-diphosphopolyprenol alpha-mannosyltransferase

Natural Substrates Products

Natural Substrates Products on EC 2.4.1.252 - GDP-mannose:cellobiosyl-diphosphopolyprenol alpha-mannosyltransferase

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NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
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
show the reaction diagram
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
show the reaction diagram
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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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?