نتایج جستجو برای: early cleavage
تعداد نتایج: 729833 فیلتر نتایج به سال:
به منظور مطالعات میکروبیواستراتیگرافی و پالئواکولوژی (بر اساس داده های ژئوشیمیایی)و همچنین میکروفاسیس سازند کژدمی، مقطع کوه رحمت واقع در شمال شرق شیراز مورد مطالعه قرار گرفته است. بطور کلی این سازند با ضخامت 66/89 متر بوده که در جهت عمود بر امتداد لایه ها 76 نمونه برداشت شده و 82 مقطع میکروسکوپی از آن تهیه و مورد مطالعه قرار گرفته است. در این تحقیق مطالعات میکروبیواستراتیگرافی از دو منظر، فرامی...
During the early steps of ribosome biogenesis in mammals, the two ribosomal subunits 40S and 60S are produced via splitting of the large 90S pre-ribosomal particle (90S) into pre-40S and pre-60S pre-ribosomal particles (pre-40S and pre-60S). We previously proposed that replacement of fibrillarin by Nop52 (RRP1/NNP-1) for the binding to p32 (C1QBP) is a key event that drives this splitting proce...
Cleavage of eukaryotic translation initiation factor 4GI (eIF4GI) is required for shutoff of host cell translation during poliovirus (PV) infection of HeLa cells. Reports published by several groups have led to confusion whether this cleavage is mediated by viral 2A protease (2A(pro)) or a putative cellular enzyme (termed eIF4Gase) which is activated by 2A(pro) or other aspects of viral infecti...
Incorporation of uridine in cleavage stage eggs of the sea urchin Paracentrotus lividus was investigated. It was shown by ion exchange and thin layer chromatography that most of the uridine taken up during the 16-cell stage was converted into UTP with some incorporation into UDP and UMP. Conversion of uridine to these phosphorylated nucleosides occurred throughout early cleavage stages. A very ...
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