Operon Gum
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Production and characterization of gum operon mutants of Xylella fastidiosa cvc strain. / Produção e caracterização de mutantes do operon gum de Xylella fastidiosa.
Xylella fastidiosa is a fastidious, xylem restricted, gram.negative bacteria, that causes several economically important diseases as Pierce s disease of grapevine in USA and the Citrus Variegated Chlorosis (CVC) in Brasil. CVC affects severely the São Paulo State citriculture jeopardizing thousands of jobs and millions of dollars of incomes. The genome sequ
Publicado em: 2003
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2. "Aplicação da bioinformática no estudo dos genes e enzimas envolvidos na síntese da goma fastidiana produzida pela xylella fastidiosa" / "Bioinformatic applied in studies of the enzymes involved in the biosynthesis of the exopolysaccharide, fastidian gum, produced by Xylella Fastidiosa"
Xylella fastidiosa é uma bactéria Gram-negativa, limitada ao xilema das plantas e o agente causador de diversas doenças em importantes plantações como citros, videiras, mirta, amêndoa, arbustos e café. Em citros, X. fastidiosa causa a Clorose Variegada dos Citros (CVC) ou amarelinho. Nove enzimas (GumB, C, D, E, F, H, J, K e M) estão envolvidas n
Publicado em: 2003
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3. Production of biopolímeros for microrganismo modified geneticamente. / Produção de biopolimeros por microrganismos modificados geneticamente.
This work aimed to study the production of biopolymers by genetically modified microorganisms. Xanthomonas campestris pv campestris and Xanthomonas axonopodis pv manihotis were studied as a receiver lineage of the genes under study, and Zymomonas mobilis and Xylella fastidiosa as donor lineages. The first chapter is a revision article about the production of
Publicado em: 2003
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4. Promoter analysis of the Xanthomonas campestris pv. campestris gum operon directing biosynthesis of the xanthan polysaccharide.
The Xanthomonas campestris gum gene cluster is composed of 12 genes designated gumB, -C, -D, -E, -F, -G, -H, -I, -J, -K, -L, and -M. The transcriptional organization of this gene cluster was analyzed by the construction of gum-lacZ transcriptional fusions in association with plasmid integration mutagenesis. This analysis, coupled with primer extension assays
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5. New Mobilizable Vectors Suitable for Gene Replacement in Gram-Negative Bacteria and Their Use in Mapping of the 3′ End of the Xanthomonas campestris pv. campestris gum Operon
We describe useful vectors to select double-crossover events directly in site-directed marker exchange mutagenesis in gram-negative bacteria. These vectors contain the gusA marker gene, providing colorimetric screens to identify bacteria harboring those sequences. The applicability of these vectors was shown by mapping the 3′ end of the Xanthomonas campest
American Society for Microbiology.
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6. Linkage of genes essential for synthesis of a polysaccharide capsule in Sphingomonas strain S88.
Several structurally related capsular polysaccharides that are secreted by members of the genus Sphingomonas are being developed as aqueous rheological control agents for diverse industrial and food applications. They include gellan (S-60), welan (S-130), rhamsan (S-194), S-657, S-88, S-198, S-7, and NW-11. We refer to these polysaccharides as sphingans, aft