Redd
Mostrando 13-24 de 30 artigos, teses e dissertações.
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13. Avaliações diárias e sazonais das concentrações de CO2 em um ecossistema de manguezal: dimensões micrometeorológicas e econômicas / Assessing daily and seasonal CO2 concentrations in a mangrove ecosystem: micrometeorological and economic dimensions
Este trabalho baseou-se em um projeto pioneiro que estudou os fluxos e concentrações de CO2 em manguezais do Pará, Brasil. Desenvolvido no contexto do LBA – Experimento de Larga Escala da Biosfera-Atmosfera da Amazônia, operou em um sítio experimental no município de Bragança, que hospedou o projeto CARBOPARÁ – LBA. Em uma floresta cujo d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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14. Use of Jatropha oil methyl ester and its blends as an alternative fuel in diesel engine
Biomass derived vegetable oils are quite promising alternative fuels for agricultural diesel engines. Use of vegetable oils in diesel engines leads to slightly inferior performance and higher smoke emissions due to their high viscosity. The performance of vegetable oils can be improved by modifying them through the transesterification process. In the present
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2009-09
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15. Análise de áreas protegidas e o mercado de carbono
O IPCC atribui às emissões de Gases Efeito Estufa antrópicas um dos principais responsáveis pela aceleração do aquecimento do planeta. No Brasil, as maiores emissões tem sua origem nas queimadas e mudanças do uso do solo. A UNFCCC assina em 1997 o Protocolo de Quioto, que fixa reduções nas emissões em relação aos níveis de 1990, até 2012 e cri
Publicado em: 2009
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16. Nucleotide sequence and transcriptional analysis of the redD locus of Streptomyces coelicolor A3(2).
Previous genetic evidence suggested that the redD gene product might be involved in the regulation of undecylprodigiosin (Red) biosynthesis in Streptomyces coelicolor. The redD+ gene was subcloned on a 2.2-kilobase-pair restriction fragment from the S. coelicolor redCD region by complementation of S. coelicolor JF1 (redD42). The DNA sequence of the 2.2-kilob
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17. bldA dependence of undecylprodigiosin production in Streptomyces coelicolor A3(2) involves a pathway-specific regulatory cascade.
The production of the red-pigmented tripyrrole antibiotic undecylprodigiosin (Red) by Streptomyces coelicolor A3(2) depends on two pathway-specific regulatory genes, redD and redZ. RedD is homologous to several other proteins that regulate antibiotic production in streptomycetes; RedZ is a member of the response regulator family. redZ transcripts were detect
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18. redD and actII-ORF4, pathway-specific regulatory genes for antibiotic production in Streptomyces coelicolor A3(2), are transcribed in vitro by an RNA polymerase holoenzyme containing sigma hrdD.
redD and actII-ORF4, regulatory genes required for synthesis of the antibiotics undecylprodigiosin and actinorhodin by Streptomyces coelicolor A3(2), were transcribed in vitro by an RNA polymerase holoenzyme containing sigma hrdD. Disruption of hrdD had no effect on antibiotic production, indicating that redD and actII-ORF4 are transcribed in vivo by at leas
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19. Elevated Corticosterone Associated with Food Deprivation Upregulates Expression in Rat Skeletal Muscle of the mTORC1 Repressor, REDD11–3
Food deprivation induces a repression of protein synthesis in skeletal muscle in part due to reduced signaling through the mammalian target of rapamycin complex 1 (mTORC1). Previous studies have identified upregulated expression of the protein Regulated in DNA Damage and Development (REDD1) as an important mechanism in the regulation of mTORC1 activity in re
American Society for Nutrition.
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20. REDD1, an inhibitor of mTOR signalling, is regulated by the CUL4A–DDB1 ubiquitin ligase
The cellular response to hypoxia involves several signalling pathways that mediate adaptation and survival. REDD1 (regulated in development and DNA damage responses 1), a hypoxia-inducible factor-1 target gene, has a crucial role in inhibiting mammalian target of rapamycin complex 1 (mTORC1) signalling during hypoxic stress. However, little is known about th
Nature Publishing Group.
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21. Transcriptional Regulation of Streptomyces coelicolor Pathway-Specific Antibiotic Regulators by the absA and absB Loci
The four antibiotics produced by Streptomyces coelicolor are all affected by mutations in the absA and absB loci. The absA locus encodes a putative two-component signal transduction system, and the absB locus encodes a homolog of Escherichia coli RNase III. We assessed whether these loci control synthesis of the antibiotics actinorhodin and undecylprodigiosi
American Society for Microbiology.
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22. Regulation of mTOR function in response to hypoxia by REDD1 and the TSC1/TSC2 tumor suppressor complex
Mammalian target of rapamycin (mTOR) is a central regulator of protein synthesis whose activity is modulated by a variety of signals. Energy depletion and hypoxia result in mTOR inhibition. While energy depletion inhibits mTOR through a process involving the activation of AMP-activated protein kinase (AMPK) by LKB1 and subsequent phosphorylation of TSC2, the
Cold Spring Harbor Laboratory Press.
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23. The bldC Developmental Locus of Streptomyces coelicolor Encodes a Member of a Family of Small DNA-Binding Proteins Related to the DNA-Binding Domains of the MerR Family
The bldC locus, required for formation of aerial hyphae in Streptomyces coelicolor, was localized by map-based cloning to the overlap between cosmids D17 and D25 of a minimal ordered library. Subcloning and sequencing showed that bldC encodes a member of a previously unrecognized family of small (58- to 78-residue) DNA-binding proteins, related to the DNA-bi
American Society for Microbiology.
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24. Activation of Antibiotic Biosynthesis by Specified Mutations in the rpoB Gene (Encoding the RNA Polymerase β Subunit) of Streptomyces lividans
We found that the biosynthesis of actinorhodin (Act), undecylprodigiosin (Red), and calcium-dependent antibiotic (CDA) are dramatically activated by introducing certain mutations into the rpoB gene that confer resistance to rifampin to Streptomyces lividans 66, which produces less or no antibiotics under normal growth conditions. Activation of Act and/or Red
American Society for Microbiology.