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	Provedor de dados Electron. J. Biotechnol. (1) Genet. Mol. Biol. (1) Autor Axelsson,Rikard (1) Bizarro,Cristiano Valim (1) Lindblad,Peter (1) Schuck,Desirée Cigaran (1) Vellguth,Martin (1) Wünschiers,Röbbe (1) Mais... Palavra-chave Metabolic pathways (2) Bioinformatics (1) Cyanobacteria (1) DNA-microarrays (1) Gene expression (1) Metabolism (1) Mollicutes (1) Nitrogen availability (1) Nitrogen fixation (1) Purine (1) Pyrimidine (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Journal article (1) Ano 2007 (2) País Brazil (1) Chile (1) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Experimental and bioinformatic approaches for analyzing and visualizing cyanobacterial nitrogen and hydrogen metabolism Electron. J. Biotechnol. Wünschiers,Röbbe; Axelsson,Rikard; Vellguth,Martin; Lindblad,Peter. Many cyanobacteria are capable of utilizing light energy for nitrogen fixation. As a by-product of this nitrogenase mediated catalysis, hydrogen gas is produced. Several approaches to increase hydrogen production from cyanobacteria exist. Usually, these approaches are non-targeted. Here we exemplify how DNA-microarray based gene-expression analysis and bioinformatic visualization techniques can be used to analyze nitrogen and hydrogen metabolism from the filamentous, heterocyst forming cyanobacterium Nostoc PCC 7120. We analyzed the expression of 1249 genes from major metabolic categories under nitrogen fixing and non-nitrogen fixing growth. Of the selected genes, 494 show a more than 2-fold expression difference in the two conditions analyzed. Under... Tipo: Journal article Palavras-chave: Bioinformatics; Cyanobacteria; DNA-microarrays; Gene expression; Metabolic pathways; Nitrogen availability; Nitrogen fixation. Ano: 2007 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582007000400008 Purine and pyrimidine nucleotide metabolism in Mollicutes Genet. Mol. Biol. Bizarro,Cristiano Valim; Schuck,Desirée Cigaran. Several mollicute genome projects are underway, offering unique opportunities to study genes and metabolic pathways on a genome-wide scale. Here, we have analyzed the conservation and diversity of purine and pyrimidine metabolism in mycoplasmas. An evaluation of discrepancies between genomic analysis and enzymatic data revealed interesting aspects about these organisms. We found important examples in which enzyme activity was reported without the annotation of a corresponding gene. An interesting example concerns phosphopentomutase. In Mollicutes, we have identified CDSs orthologous to sequences recently identified as new phosphopentomutases in archaeobacteria that are structurally related to phosphomannomutases. It is suggested that these sequences could... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mollicutes; Purine; Pyrimidine; Metabolism; Metabolic pathways. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000200005 Registros recuperados: 2 Primeira ... 1 ... Última

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