نتایج جستجو برای: benzyl adenine
تعداد نتایج: 27525 فیلتر نتایج به سال:
Ethylene and supraoptimal levels of 2,4-dichlorophenoxyacetic acid inhibit the growth of the apical hook region of etiolated Pisum sativum (var. Alaska) seedlings by stopping almost all cell divisions. Cells are prevented from entering prophase. The hormones also retard cell division in intact root tips and completely stop the process in lateral buds. The latter inhibition is reversed partially...
The gene hyuP from Microbacterium liquefaciens AJ 3912 with an added His6 tag was cloned into the expression plasmid pTTQ18 in an Escherichia coli host strain. The transformed E. coli showed transport of radioisotope-labeled 5-substituted hydantoins with apparent K(m) values in the micromolar range. This activity exhibited a pH optimum of 6.6 and was inhibited by dinitrophenol, indicating the r...
Recombinant alpha interferon (IFN-alpha) is used in the treatment of hepatitis C virus (HCV)-infected patients but is not optimal in terms of efficacy or tolerability. Toll-like 7 receptor (TLR-7) agonists stimulate the innate immune system to produce, among other cytokines, IFN-alpha and are being evaluated as alternative drugs to treat HCV infection. This paper describes the application of ph...
گزنه (Urtica dioica L.) گیاهی دوپایه و دگرگشن با ترکیبات مؤثره و خواص دارویی ویژه که ارزش اقتصادی بسیاری دارد. از آنجا که این گونه دارای هتروزیگوتی بالایی است، امکان تولید گیاهان منتخب از نظر مواد مؤثره و فیبر یکدست از طریق بذر را نداشته، بههمین دلیل برای تولید و حفظ پایههای منتخب میتوان از طریق تکثیر غیرجنسی و کشت بافت اقدام نمود. برای ریزازدیادی، از جوانههای رأسی سرشاخههای گزنه بهعنوان ...
Common histidine-to-aspartate (His-->Asp) phosphorelay is a paradigm of signal transduction in both prokaryotes and eukaryotes for the propagation of certain environmental stimuli, in which histidine (His)-kinases play central roles as sensors for environmental signals. For the higher plant, Arabidopsis thaliana, it was recently suggested that the His-kinase (AHK4 / CRE1 / WOL) is a sensor for ...
Novel N-amino benzylthiolates were synthesized via multicomponent reaction of malononitrile, isothiocyanates and benzyl halides under conventional and solvent-free conditions. Various electron-donating and -withdrawing substitutes within both isothiocyanates and benzyl halides were used to demonstrate the efficiency of new methodology. A broad spectrum of antibacterial and antifungal activities...
the present investigation was conducted to study the effects of type and concentration of auxin and cytokinin on callus induction of three strawberry (kurdistan, parose and camarosa) cultivars. for this purpose, leaf blade, nodal, petiole, receptacle, stamen and flower bud explants were cultured on murashige and skoog (ms) medium at three separate experiments included 2, 4 dichlorophenoxyacetic...
Substitute adenine (SA)-2, a synthetic heterocycle chemically related to adenine with substitutions in positions 9-, 2-, and 8- (i.e., 9-benzyl-2-butoxy-8-hydroxyadenine), induces in vitro immunodeviation of Th2 cells to a Th0/Th1 phenotype. In this article, we evaluate the in vivo ability of SA-2 to affect Th2-mediated lung inflammation and its safety. TLR triggering and NF-kappaB activation b...
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