The gellan gum biosynthetic genes gelC and gelE encode two separate polypeptides homologous to the activator and the kinase domains of tyrosine autokinases.

Abstract excerpt

The high-molecular-weight exopolysaccharide gellan is an important commercial gelling agent produced in high yield by the Gram-negative bacterium Sphingomonas elodea ATCC 31461. The cluster of genes required for gellan biosynthesis contains the genes gelC and gelE. These encode for two polypeptides homologous to the activator domain and the kinase domain, respectively, of bacterial autophosphorylating tyrosine...

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