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Literature summary for 2.4.1.251 extracted from
- Mutational analysis of the gum gene cluster required for xanthan biosynthesis in Xanthomonas oryzae pv oryzae (2008), Biotechnol. Lett., 31, 265-270.
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| GDP-mannose + GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-dicis,octatrans-undecaprenol | Xanthomonas oryzae | GumK 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, UDP-glucuronic acid, and GDP-mannose onto a polyprenol phosphate carrier, by the glycosyltransferase homologues encoded by the gumD, gumM, gumH, gumK, and gumI genes, respectively | GDP + D-Man-beta-(1->4)-GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-dicis,octatrans-undecaprenol | - |
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Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Xanthomonas oryzae | - |
pv. oryzae | - |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| GDP-mannose + GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-dicis,octatrans-undecaprenol | GumK 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, UDP-glucuronic acid, and GDP-mannose onto a polyprenol phosphate carrier, by the glycosyltransferase homologues encoded by the gumD, gumM, gumH, gumK, and gumI genes, respectively | Xanthomonas oryzae | GDP + D-Man-beta-(1->4)-GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-dicis,octatrans-undecaprenol | - |
? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| gumI | - |
Xanthomonas oryzae |
General Information
| General Information | Comment | Organism |
|---|---|---|
| malfunction | decreased amount of the exopolysaccharide produced by the gumI mutant strain SJ1021 may be due to incomplete polymerization of the tetrasaccharide repeating units. Although this strain is not fully capable of producing the pentasaccharide repeating units, the absence of a terminal mannose residue in xanthan does not affect the full virulence of Xanthomonas oryzae | Xanthomonas oryzae |
| physiological function | GumI is involved in biosynthesis of the pentasaccharide repeating unit of xanthan | Xanthomonas oryzae |
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