Xanthan ketal pyruvate transferase explained

Xanthan ketal pyruvate transferase
Ec Number:	2.5.1.95

Xanthan ketal pyruvate transferase (KPT) is an enzyme with systematic name phosphoenolpyruvate:D-Man-beta-(1->4)-GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol 4,6-O-(1-carboxyethan-1,1-diyl)transferase.^[1] This enzyme catalyses the following chemical reaction

phosphoenolpyruvate + D-Man-beta-(1->4)-D-GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol

\rightleftharpoons + phosphate

This enzyme is involved in the biosynthesis of the polysaccharide xanthan.

Notes and References

1. Marzocca MP, Harding NE, Petroni EA, Cleary JM, Ielpi L . Location and cloning of the ketal pyruvate transferase gene of Xanthomonas campestris . Journal of Bacteriology . 173 . 23 . 7519–24 . December 1991 . 1657892 . 212518 .