Azotobacter Vinelandii
Mostrando 1-12 de 369 artigos, teses e dissertações.
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1. Effect of Nutrient Sources on the Alginate Accumulation in the Culture Liquid of Azotobacter vinelandii D-05 and Obtaining Biocomposite Materials
ABSTRACT Using the classic biotechnological methods, the dependence of A. vinelandii D-05 culture alginate production from the media carbon and nitrogen content was investigated. The maximal alginate production was observed during cultivation bacterium in the medium with 2 to 4% of sucrose, but the maximal growth was found in the medium with 4% glucose. It w
Braz. arch. biol. technol.. Publicado em: 06/08/2018
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2. Análise transcricional dos genes do sistema ISC em EUCALYPTUS GRANDIS e AZOBACTER VINELAND
Os cofatores de ferro-enxofre [Fe-S] estão entre os mais versáteis e antigos cofatores enzimáticos encontrados na natureza. As células têm explorado as propriedades eletrônicas e estruturais destes cofatores inorgânicos para uma ampla variedade de atividades incluindo a transferência de elétrons, a catálise e a ativação de substratos. Um grande n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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3. Caracterização da maquinaria SUF responsável pela formação e associação dos cofatores [Fe-S] em Enterococcus faecalis
Cofatores ferro-enxofre são grupos prostéticos inorgânicos ubíquos e evolutivamente ancestrais, cuja formação é dependente de complexas maquinarias protéicas. Três sistemas de formação distintos já foram determinados, denominados sistemas NIF, ISC e SUF. Apesar de bem descritos em diversos organismos, estas maquinarias são pouco caracterizadas n
Publicado em: 2011
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4. Alginato bacteriano: aspectos tecnológicos, características e produção
Alginate is a biopolymer used for a variety of industrial applications, for example, in the textiles, cosmetics, foods, agricultural and biotechnological industries. This biopolymer is traditionally extracted from some brown seaweeds (Phaeophyceae) and can be produced by bacteria isolated from soil, as Azotobacter vinelandii, like capsular polysaccharide usi
Química Nova. Publicado em: 2008
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5. Biotransformação da violaceina
O composto 3-[1,2-dihidro-5-(5-hidroxi-1H-indol-3-il)-2-oxo-3H-pirrol-3- ilideno]-1,3-dihidro-2H-indol-2-ona, conhecido como violaceína, é o principal pigmento produzido pela bactéria Chromobacterium violaceum (CCT 3496). Este pigmento violeta apresenta diversas atividades biológicas como antibiótica, antitumoral, antichagásica, antimicobacteriana e an
Publicado em: 2001
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6. Stimulation of Agrobacterium tumefaciens Growth by Azotobacter vinelandii Ferrisiderophores
Azotobacter vinelandii stimulated the growth of Agrobacterium tumefaciens H2, H23, H24, H27, and ATCC 15955 on media containing insoluble iron sources. The Azotobacter vinelandii siderophores appeared to promote Agrobacterium tumefaciens growth by solubilizing mineral iron, and the ferrisiderophores so formed then acted as iron sources for Agrobacterium tume
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7. Technique for Isolating Phage for Azotobacter vinelandii
An enrichment technique was developed whereby azotophage could readily be isolated after inoculation of soil sites with Azotobacter vinelandii.
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8. Cysts of Azotobacter vinelandii with Double Coats
Cyst germination was studied in cultures of Azotobacter vinelandii ATCC 12837. The existence of cysts enclosed by double coats is described.
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9. Phospholipids of Azotobacter vinelandii
Analyses of resting cells of Azotobacter vinelandii revealed that numerous phospholipids were present that did not concentrate in the membranous R3 fraction which carried out electron transport function.
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10. Restoration by Ubiquinone of Azotobacter vinelandii Reduced Nicotinamide Adenine Dinucleotide Oxidase Activity
Extraction with pentane virtually abolished reduced nicotinamide adenine dinucleotide oxidase activity in small particles from Azotobacter vinelandii, but activity was largely restored by added ubiquinone.
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11. Surface Structure of Azotobacter vinelandii Cysts as Revealed by Freeze-Cleaving1
Micrographs of freeze-cleaved Azotobacter vinelandii cysts reveal that the surface is composed of several overlapping layers. This observation is consistent with the previously proposed structure of the outer cyst coat.
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12. Azotobacter vinelandii mutS: nucleotide sequence and mutant analysis.
An Azotobacter vinelandii homolog to the Salmonella typhimurium mutS gene was discovered upstream of the fdxA gene. The product of this gene is much more similar to S. typhimurium MutS than either is to the HexA protein of Streptococcus pneumoniae. An A. vinelandii delta mutS mutant strain was shown to have a spontaneous mutation frequency 65-fold greater th