Ribosome
Mostrando 13-24 de 2398 artigos, teses e dissertações.
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13. Análise citogenética comparativa de diferentes populações de Rhamdia quelen (Siluriformes, Heptapteridae)
This study presents cytogenetic findings in 29 specimens of Rhamdia quelen from five different localities: Água dos Patos river, Iepê/SP, Água das Pedras river, Londrina/PR, Taquari river, Jataizinho/PR, Plateau of Bodoquena/MS and a fish culture located in Timbó/SC. All the individuals presented 2n = 58, caryotype formulae of 36m + 16sm + 6st and FN = 1
Publicado em: 2007
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14. Estudo funcional e estrutural de Nip7p, uma proteina conservada envolvida na sintese de ribossomos / Functional and structural analysis of Nip7p, a conserved protein involved in ribosome biogenesis
A síntese de ribossomos é um processo conservado em eucariotos e se inicia com a transcrição dos rRNAs no nucléolo. Mais de 170 fatores atuam de forma transitória no processamento dos precursores para gerar os rRNAs maduros que formarão as subunidades ribossomais no citoplasma. Entre as proteínas envolvidas na síntese de ribossomos está a Nip7p, um
Publicado em: 2007
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15. Análise microbiológica de pontas de cateteres venosos centrais de pacientes do Hospital Universitário - Londrina - Paraná
Cateteres venosos centrais (CVC) são utilizados com a finalidade de facilitar o diagnóstico e o tratamento de pacientes hospitalizados. Entretanto, o uso destes oferece riscos de infecção local e sistêmica. Staphylococcus aureus e S. epidermidis são agentes etiológicos de infecções relacionadas a CVC e possuem a capacidade de produzir biofilme. A fo
Publicado em: 2006
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16. Pulchellis: a patent vegetal toxin ribosome inactivating - type 2 RIP. in vitro and in vivo studies / Pulchellina: uma potente toxina vegetal inativadora de ribossomos - RIP tipo 2. estudos in vitro e in vivo
Pulchellin is a type 2 ribosome-inactivating protein (RIP) isolated from seeds of the Abrus pulchellus tenuiflorus plant. The DNA fiagment encoding Pulchellin A-chain (PAC) was cloned and inserted in pGEX-5X to express the recombinant pulchellin Achain (rPAC) as a fusion protein in Escherichin coli. The deduced amino acid sequence analyses of the rPAC presen
Publicado em: 2005
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17. Similarity between the association factor of ribosomal subunits and the protein Stm1p from Saccharomyces cerevisiae
A ribosome association factor (AF) was isolated from the yeast Sacchharomyces cerevisiae. Partial amino acid sequence of AF was determined from its fragment of 25 kDa isolated by treating AF with 2-(2-nitrophenylsulfenyl)-3-methyl-3'-Bromoindolenine (BNPS-skatole). This sequence has a 86% identity to the product of the single-copy S. cerevisiae STM1 gene tha
Memórias do Instituto Oswaldo Cruz. Publicado em: 2004-11
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18. Ribosome binding site recognition using neural networks
Pattern recognition is an important process for gene localization in genomes. The ribosome binding sites are signals that can help in the identification of a gene. It is difficult to find these signals in the genome through conventional methods because they are highly degenerated. Artificial Neural Networks is the approach used in this work to address this p
Genetics and Molecular Biology. Publicado em: 2004
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19. Molecular characterization of DDX26, a human DEAD-box RNA helicase, located on chromosome 7p12
DEAD-box proteins comprise a family of ATP-dependent RNA helicases involved in several aspects of RNA metabolism. Here we report the characterization of the human DEAD-box RNA helicase DDX26. The gene is composed of 14 exons distributed over an extension of 8,123 bp of genomic sequence and encodes a transcript of 1.8 kb that is expressed in all tissues evalu
Brazilian Journal of Medical and Biological Research. Publicado em: 2001-10
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20. Binding Interaction between Tet(M) and the Ribosome: Requirements for Binding
Tet(M) protein interacts with the protein biosynthesis machinery to render this process resistant to tetracycline by a mechanism which involves release of the antibiotic from the ribosome in a reaction dependent on GTP hydrolysis. To clarify this resistance mechanism further, the interaction of Tet(M) with the ribosome has been examined by using a gel filtra
American Society for Microbiology.
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21. Trigger factor binds to ribosome–signal-recognition particle (SRP) complexes and is excluded by binding of the SRP receptor
Trigger factor (TF) and signal recognition particle (SRP) bind to the bacterial ribosome and are both crosslinked to protein L23 at the peptide exit, where they interact with emerging nascent peptide chains. It is unclear whether TF and SRP exclude one another from their ribosomal binding site(s). Here we show that SRP and TF can bind simultaneously to ribos
National Academy of Sciences.
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22. Tethering of eIF4G to adenoviral mRNAs by viral 100k protein drives ribosome shunting
Although most mRNAs initiate translation by 5′ ribosome scanning, some small fraction of mammalian and viral mRNAs utilize either of two alternate mechanisms, known as internal ribosome entry and ribosome shunting. Ribosome shunting is a poorly understood form of initiation in which 40S ribosome subunits are loaded onto mRNA through interactions with the m
Cold Spring Harbor Laboratory Press.
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23. The binding of berenil to Escherichia coli ribosome.
The binding of the nonintercalating dye berenil to the 70S ribosome of Escherichia coli has been demonstrated by spectrophotometric measurements and gel filtration through Biogel P100 column. The berenil spectrum is gradually shifted towards the red region with the increasing amount of ribosome added, the isosbestic point being at 375 nm. There is positive c
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24. Growth Phase-Coupled Changes of the Ribosome Profile in Natural Isolates and Laboratory Strains of Escherichia coli
The growth phase-dependent change in sucrose density gradient centrifugation patterns of ribosomes was analyzed for both laboratory strains of Escherichia coli and natural isolates from the ECOR collection. All of the natural isolates examined formed 100S ribosome dimers in the stationary phase, and ribosome modulation factor (RMF) was associated with the ri
American Society for Microbiology.