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Results 1 - 8 of 8
EC Number General Information Commentary Reference
Display the reaction diagram Show all sequences 2.4.1.252malfunction from the biochemical analysis of a defined set of Xanthomonas campestris gum mutants, experimental data are reported for assigning functions to the products of the gum genes. Inactivation of gumH completely abolishes in vitro polymer formation. Permeabilized cells are incubated with UDP-glucose, GDPmannose, and UDP-glucuronic acid, one of them labeled in the sugar moiety. Accumulating intermediates are analysed. Oligosaccharides obtained from gumH- strain XcH can be resolved into two components: a compound with the same mobility as the disaccharide cellobiose and glucose. XcH cells labeled with UDP-[14C]glucuronic acid or GDP-[14C]mannose do not incorporate radioactivity into the 1203 extract 704257
Display the reaction diagram Show all sequences 2.4.1.252malfunction significantly attenuated production of xanthan in knock-out mutant strain 702828
Display the reaction diagram Show all sequences 2.4.1.252more the gum gene cluster constitutes an operon expressed from multiple promoters located upstream of gumB and gumG, respectively. The existence of two internal promoters is newly identified in the Xanthomonas oryzae gum gene cluster through the insertion mutations with the rrnB transcriptional terminator and RT-PCR analyses 702815
Display the reaction diagram Show all sequences 2.4.1.252physiological function GumH enzyme is an alpha-1,3-mannosyltransferase responsible for the transfer of mannose from GDP-mannose to the cellobiose-diphosphate-polyprenol carrier lipid during the assembly of the tetrasaccharide repeat unit of the exopolysaccharide fastidian gum 711062
Display the reaction diagram Show all sequences 2.4.1.252physiological function GumH is involved in biosynthesis of the pentasaccharide repeating unit of xanthan 702828
Display the reaction diagram Show all sequences 2.4.1.252physiological function the enzyme is involved in acetan polysaccharide synthesis. AceA can complement a Xanthomonas campestris mutant that is deficient in the homologous gene gumH (involved in xanthan biosynthesis) 704253
Display the reaction diagram Show all sequences 2.4.1.252physiological function the enzyme is involved in biosynthesis of xanthan 704257
Display the reaction diagram Show all sequences 2.4.1.252physiological function the enzyme is involved in the biosynthesis of the exopolysaccharide acetan 705743
Results 1 - 8 of 8