نتایج جستجو برای: تکثیر دایره غلتان rca
تعداد نتایج: 14655 فیلتر نتایج به سال:
Rubisco's catalytic chaperone, Rubisco activase (Rca), uses the energy from ATP hydrolysis to restore catalytic competence to Rubisco. In Arabidopsis (Arabidopsis thaliana), inhibition of Rca activity by ADP is fine tuned by redox regulation of the α-isoform. To elucidate the mechanism for Rca regulation in species containing only the redox-insensitive β-isoform, the response of activity to ADP...
Studies on some plant species have shown that increasing the growth temperature gradually or pretreating with high temperature can lead to obvious photosynthetic acclimation to high temperature. To test whether this acclimation arises from heat adaptation of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco, EC 4.1.1.39) activation mediated by Rubisco activase (RCA), gene expression of R...
To maintain metabolic flux through the Calvin-Benson-Bassham cycle in higher plants, dead-end inhibited complexes of Rubisco must constantly be engaged and remodeled by the molecular chaperone Rubisco activase (Rca). In C3 plants, the thermolability of Rca is responsible for the deactivation of Rubisco and reduction of photosynthesis at moderately elevated temperatures. We reasoned that crassul...
ااستفادۀ بهینه از دستگاه‌های پوشش‌دهندۀ دوار بذر مستلزم دانستن اطلاعاتی دربارۀ خواص فیزیکی و چگونگی حرکت بذر در استوانۀ دوار است. یکی از مهمترین تنظیمات، تنظیم سرعت دورانی استوانۀ دوار است به گونه‌ای که بذرهای داخل استوانۀ حرکت غلتان داشته باشند. برای به‌دست آوردن این اطلاعات، از روش جدیدی استفاده میشود که بر اساس حرکت دانه‌ها در استوانه‌ای دوار استوار است که کمتر از پنجاه درصد پر شده‌باشد، ا...
Root cortical aerenchyma (RCA) is induced by hypoxia, drought, and several nutrient deficiencies. Previous research showed that RCA formation reduces the respiration and nutrient content of root tissue. We used SimRoot, a functional-structural model, to provide quantitative support for the hypothesis that RCA formation is a useful adaptation to suboptimal availability of phosphorus, nitrogen, a...
تندابها یکی از انواع سازههای هیدرولیکی میباشند که به واسطه جریان فوقبحرانی باعث ایجاد امواج غلتان و آشفتگی در سطح آزاد جریان میشود. در این تحقیق به وسیله نرمافزار فلوئنت و با استفاده از مدل حجم سیال و الگوریتم پیزو، شکلگیری امواج غلتان در مدل فیزیکی سرریز سد آزادو مدلهای عددی بررسی شده است. برای این منظور عمق جریان و ارتفاع موج در نقاط متفاوتی از طول تندابها به ازای دبیهای ورودی مختل...
BACKGROUND The presence of chronic total occlusion of the right coronary artery (CTO-RCA) in patients undergoing percutaneous interventions for unprotected left main (ULM) disease may affect the prognosis. In this study, we evaluated the immediate results and follow-up of patients with ULM-percutaneous interventions and with or without associated CTO-RCA. METHODS AND RESULTS Between March 200...
Ribulose-1, 5-bisphosphate carboxylase/oxygenase (Rubisco) activase (RCA) in the thylakoid membrane (TM) has been shown to play a role in protection and regulation of photosynthesis under moderate heat stress. However, the physiological significance of RCA bound to the TM (TM-RCA) without heat stress remains unknown. In this study, it is first shown, using experiments in vivo, that the TM-RCA v...
To maintain metabolic flux through the Calvin-Benson-Bassham cycle in higher plants, dead-end inhibited complexes of Rubisco must constantly be engaged and remodeled by the molecular chaperone Rubisco activase (Rca). In C3 plants, the thermolability of Rca is responsible for the deactivation of Rubisco and reduction of photosynthesis at moderately elevated temperatures. We reasoned that crassul...
A C-terminal modulatory domain (CTM) tightly regulates the biophysical properties of Ca(v)1.3 L-type Ca(2+) channels, in particular the voltage dependence of activation (V(0.5)) and Ca(2+) dependent inactivation (CDI). A functional CTM is present in the long C-terminus of human and mouse Ca(v)1.3 (Ca(v)1.3(L)), but not in a rat long cDNA clone isolated from superior cervical ganglia neurons (rC...
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