نتایج جستجو برای: esta
تعداد نتایج: 26812 فیلتر نتایج به سال:
OBJECTIVE The goal of the OSCAR programme is to evaluate the performances of genotypic HIV-1 tropism testing in clinical practice using the enhanced sensitivity version of Trofile (ESTA) as reference-assay. METHODS HIV-1 coreceptor-usage was assessed using plasma samples from 406 HIV-1 infected patients by ESTA and by gp120 V3 population-sequencing followed by Geno2pheno (set at a False Posit...
In aflatoxin biosynthesis, the pathway for the conversion of 1-hydroxyversicolorone to versiconal hemiacetal acetate (VHA) to versiconal (VHOH) is part of a metabolic grid. In the grid, the steps from VHA to VHOH and from versiconol acetate (VOAc) to versiconol (VOH) may be catalyzed by the same esterase. Several esterase activities are associated with the conversion of VHA to VHOH, but only on...
The aim of this work was to investigate the behavior of thermophilic esterase EST2 from Alicyclobacillus acidocaldarius in milk and cheese models. The pure enzyme was used to compare the EST2 hydrolytic activity to the activity of endogenous esterase EstA from Lactococcus lactis. The results indicate that EST2 exhibits 30-fold-higher esterase activity than EstA. As EstA has thioesterase activit...
Xenorhabdus nematophila is a gammaproteobacterium and broad-host-range insect pathogen. It is also a symbiont of Steinernema carpocapsae, the nematode vector that transports the bacterium between insect hosts. X. nematophila produces several secreted enzymes, including hemolysins, lipases, and proteases, which are thought to contribute to virulence or nutrient acquisition for the bacterium and ...
A collection of clones, isolated from a Piromyces equi cDNA expression library by immunoscreening with antibodies raised against affinity purified multienzyme fungal cellulase-hemicellulase complex, included one which expressed cinnamoyl ester hydrolase activity. The P. equi cinnamoyl ester hydrolase gene (estA) comprised an open reading frame of 1608 nt encoding a protein (EstA) of 536 amino a...
Resnmo No contexto de melhoria continua esta comunicao aborda o tern& das alter&Jes introduzidas no software de sistemas hierarquizados, isto e, divididos em subsistemas e m6dulos, para a implementac&o de melhorias ou correc(;:&o de erros. garantindo a compatibilidade e a divulga&o coerente das sucessivas versHes dos diferentes m6dulos Que constituem o sistema. Esta comunicao onde sero ainda re...
Active targeting of a drug carrier to a specific target site is crucial to provide a safe and efficient delivery of therapeutics and imaging contrast agents. E-selectin expression is induced on the endothelial cell surface of vessels in response to inflammatory stimuli but is absent in the normal vessels. Thus, E-selectin is an attractive molecular target, and high affinity ligands for E-select...
زمینه و هدف: اشریشیاکلی انتروتوکسیژنیک (etec) یکی از عوامل اصلی اسهال آبکی در کودکان زیر 5 درکشورهای در حال توسعه است. هدف از این مطالعه، بررسی فراوانی ایزوله های اشریشیاکلی انتروتوکسیژنیک حامل ژن های eltb,esta در کودکان اسهالی زیر 5 سال مراجعه کننده به بیمارستان های شهر تبریز بود. روش بررسی: این مطالعه از نوع توصیفی- مقطعی و بر روی 450 نمونه مدفوع اسهالی جمع آوری شده از کودکان زیر 5 سال در طی ...
The gene encoding the major intracellular tributyrin esterase of Lactococcus lactis was cloned using degenerate DNA probes based on 19 known N-terminal amino acid residues of the purified enzyme. The gene, named estA, was sequenced and found to encode a protein of 258 amino acid residues. The transcription start site was mapped 233 nucleotides upstream of the start codon, and a canonical promot...
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