Tuia
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Ineficiência da Thuja occidentalis no tratamento dos poxvirus aviários
Medicações à base de Tuia (Thuja occidentalis) são comuns em tratamentos homeopáticos e fitoterápicos, na medicina humana e veterinária. Suas propriedades imunoestimulantes e antivirais são descritas e sua utilização empírica no tratamento das poxviroses aviárias é recomendada por criadores e veterinários. Para avaliar o potencial terapêutico
Ciência Rural. Publicado em: 2006-08
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2. AUTOMATIC HARVEST MACHINE OF CHRISTMASâS TREE / PROJETO E DESENVOLVIMENTO DE UMA MÃQUINA COLHEITADEIRA DE TUIA AUTOMATIZADA
The harvest of small trees known popularly as âChristmasâs Tree", is made with manual tools and it is a hard, stressing and slow job. Observing people, who develop these kinds of activities, is intend to study an automatic machine to carry through this task. This work presents initially, the description of the currently processes used for the harvest and a
Publicado em: 2005
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3. Protein Ia and the lamB protein can replace each other in the constitution of an active receptor for the same coliphage.
Protein Ia and the lamB protein are both located in the outer membrane of Escherichia coli K-12. The lamB protein is known to be the receptor for phage lambda. Datta et al. [Datta, D. B., Arden, B. & Henning, U. (1977) J. Bacteriol. 131, 821--829] recently isolated a phage called TuIa that uses protein Ia for its adsorption. While phage TuIa fails to grow on
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4. The sequences and activities of RegB endoribonucleases of T4-related bacteriophages
The RegB endoribonuclease encoded by bacteriophage T4 is a unique sequence-specific nuclease that cleaves in the middle of GGAG or, in a few cases, GGAU tetranucleotides, preferentially those found in the Shine–Dalgarno regions of early phage mRNAs. In this study, we examined the primary structures and functional properties of RegB ribonucleases encoded by
Oxford University Press.
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5. OmpC and LamB proteins can serve as substitute receptors for host range mutants of coliphage TuIa.
Coliphage TuIa, which uses the OmpF protein as a receptor, can adapt by mutation to using instead the OmpC or LamB protein, or both. Most of the phage mutants retained the ability to use the OmpF protein, when present, but one class of mutants lost this ability and could only use the OmpC protein.
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6. Major proteins of the Escherichia coli outer cell envelope membrane as bacteriophage receptors.
Three Escherichia coli phages, TuIa, TuIb, and TuII, were isolated from local sewage. We present evidence that they use the major outer membrane proteins Ia, Ib, and II, respectively, as receptors. In all cases the proteins, under the experimental conditions used, required lipopolysaccharide to exhibit their receptor activity. For proteins Ia and II, an appr
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7. A gene (wbbL) from Serratia marcescens N28b (O4) complements the rfb-50 mutation of Escherichia coli K-12 derivatives.
A cosmid-based genomic library of Serratia marcescens N28b was introduced into Escherichia coli DH5alpha, and clones were screened for serum resistance. One clone was found resistant to serum, to bacteriocin 28b, and to bacteriophages TuIa and TuIb. This clone also showed O antigen in its lipopolysaccharide. Subcloning and sequencing experiments showed that
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8. DNA sequences of the tail fiber genes of bacteriophage P2: evidence for horizontal transfer of tail fiber genes among unrelated bacteriophages.
We have determined the DNA sequence of the bacteriophage P2 tail genes G and H, which code for polypeptides of 175 and 669 residues, respectively. Gene H probably codes for the distal part of the P2 tail fiber, since the deduced sequence of its product contains regions similar to tail fiber proteins from phages Mu, P1, lambda, K3, and T2. The similarities of