EC |
2.5.1.95 |
Accepted name: |
xanthan ketal pyruvate transferase |
Reaction: |
phosphoenolpyruvate + D-Man-β-(1→4)-D-GlcA-β-(1→2)-D-Man-α-(1→3)-D-Glc-β-(1→4)-D-Glc-α-1-diphospho-ditrans,octacis-undecaprenol =
4,6-CH3(COO-)C-D-Man-β-(1→4)-D-GlcA-β-(1→2)-D-Man-α-(1→3)-D-Glc-β-(1→4)-D-Glc-α-1-diphospho-ditrans,octacis-undecaprenol + phosphate |
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For diagram of xanthan biosynthesis, click here |
Other name(s): |
KPT |
Systematic name: |
phosphoenolpyruvate:D-Man-β-(1→4)-GlcA-β-(1→2)-D-Man-α-(1→3)-D-Glc-β-(1→4)-D-Glc-α-1-diphospho-ditrans,octacis-undecaprenol 4,6-O-(1-carboxyethan-1,1-diyl)transferase |
Comments: |
Involved in the biosynthesis of the polysaccharide xanthan. 30-40% of the terminal mannose residues of xanthan have a 4,6-O-(1-carboxyethan-1,1-diyl) ketal group. It also acts on the 6-O-acetyl derivative of the inner mannose unit. |
Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc |
References: |
1. |
Marzocca, M.P., Harding, N.E., Petroni, E.A., Cleary, J.M. and Ielpi, L. Location and cloning of the ketal pyruvate transferase gene of Xanthomonas campestris. J. Bacteriol. 173 (1991) 7519–7524. [DOI] [PMID: 1657892] |
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[EC 2.5.1.95 created 2011, modified 2012] |
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