نتایج جستجو برای: toxic proteins
تعداد نتایج: 625380 فیلتر نتایج به سال:
previous studies had shown that sub-inhibitory concentrations of silver sulphadiazine (agsd) stimulated the production of toxic shock syndrome toxin-1 in certain strains (responder strains) of staphylococcus aureus and that protease production was also affected. no changes were detected in other strains (non-responders). extracellular proteins from eleven responder and non-responder strains gro...
Two novel strains of Bacillus thuringiensis were isolated from native habitats by the use of genes coding for proteins toxic to coleopterans (cryIII genes) as hybridization probes. Strain EG2838 (isolated by the use of the cryIIIA probe) contained a cryIIIA-hybridizing plasmid of approximately 100 MDa and synthesized crystal proteins of approximately 200 (doublet), 74, 70, 32, and 28 kDa. Strai...
Introduction: Scorpion venoms contain a variety of peptides, toxic to mammals، insects and crustaceans and are the main factors in scorpion venom toxicity (their amount being 1-3% of total venom). Most of the scorpion toxins have been isolated from the venoms of scorpions in the Buthidae family. The scorpion Buthotus Schach of this family is widely found in the western regions of Iran, but no p...
Abstract In the field of cultural heritage restoration, removal iron corrosion stains is a difficult problem to deal with, especially in stone materials. Many studies recent years have been aimed at finding simple and reliable methods using non-toxic chelating compounds. The search for natural compounds therefore great relevance, conservation heritage, where use toxic chemical often involves ri...
Background and Aim: The material is always covered by proteins immediately upon contact with a physiological environment. Hemoglobin is the one of major blood proteins. The interaction between Hemoglobin and ligands such as nanoparticles is very important and may be cause structural changes on Hemoglobin. Materials and Methods: In this work we will address the effects of silver particles on th...
In recent years, the number of recombinant proteins used for therapeutic applications and industry has increased dramatically. Recombinant proteins are produced in many host organisms (microbial, insect, plant and mammalian cells). There are many factors to consider when choosing the optimal system for protein expression and purification including the mass, purity or solubility of the recombina...
Introduction: Bisphenol A (BPA) is a toxic chemical that is used as a monomer in the production of plastic products. The BPA has an endocrine-disrupting effect and induces damage to the nervous system. Crocin, an active ingredient of Crocus sativus L. has neuroprotective effects. Therefore, this study aimed to evaluate crocin’s effects on BPA-induced memory impairment in rats and the levels ...
Polyglutamine (polyQ) stretches exceeding a threshold length confer a toxic function to proteins that contain them and cause at least nine neurological disorders. The basis for this toxicity threshold is unclear. Although polyQ expansions render proteins prone to aggregate into inclusion bodies, this may be a neuronal coping response to more toxic forms of polyQ. The exact structure of these mo...
SulA is a division inhibitor of Escherichia coli with a short half life, whose accumulation results in filamentation. Here we show that SulA is thermally unstable and goes into aggregates at elevated temperatures. This property enables the selection of mutants in the protein quality control system.
The role of hydrophobic force in biological function through the formation of several local macro-molecular structures is evident. Carbon is the element that contributes to biological function in living systems. We show that carbon distribution is related to protein activity using an example. The carbon distribution profile is foreseen to help undestand unfolded and misfolded regions of protein...
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