نتایج جستجو برای: rrna s18
تعداد نتایج: 29714 فیلتر نتایج به سال:
We describe the isolation of salt-sensitive Chlamydomonas reinhardtii mutants by insertional mutagenesis using the nitrate reductase (Nit1) gene. The plasmid pMN24, containing Nit1, was used for transformation of 305CW15 (nit1 cw15 mt+), and transformants were selected for complementation of the nit- phenotype. From 6875 nit+ colonies, four transformants (S4, S18, S46, and S66) were isolated th...
Abstract Chromium (VI) a highly toxic metal, major constituent of industrial waste. It is continuously release in soil and water, causes environmental health related issues, which increasing public concern developing countries like Pakistan. The basic aim this study was isolation screening chromium resistant bacteria from waste collected Korangi Lyari, Karachi (24?52?46.0?N 66?59?25.7?E 24?48?3...
توالیهای dna ریبوزومی بهدلیل اینکه دارای کپیهای زیادی از ژنهای rrna و نیز درجه بالایی از تغییر میباشند، بهمنظور بررسی روابط فیلوژنی در محدوده وسیعی از سطوح تاکسونومی مورد استفاده قرار میگیرند. نواحی its و فواصل داخل ژنی dna ریبوزومی هستهای، واحدهای تکراری تکامل یافته ثابت میباشند و ممکن است در بین گونه های داخل یک جنس یا در بین افراد یک جمعیت متغیر باشند. بهمنظور ارزیابی چند شکلی نوا...
Oligo(U) derivatives with [14C]-4-(N-2-chloroethyl-N-methylamino)benzaldehyde attached to 3'-end cis-diol group via acetal bond, p(Up)n-1UCHRCl as well as with [14C]-4-(N-2-chloroethyl-N-methylamino)benzylamine attached to 5'-phosphate via amide bond, ClRCH2NHpU(pU)6 were used to modify 70S E. coli ribosomes near mRNA binding centre. Within ternary complex with ribosome and tRNAPhe all reagents...
Nasopharyngeal carcinoma (NPC) has the highest metastatic potential among head and neck cancers. Distant metastasis is the major cause of treatment failure. The role of interleukin-8 (IL-8) in NPC progression remains unknown. Our multivariate survival analyses of 255 patients with NPC revealed that higher IL-8 expression in primary NPC tissue was an independent prognostic factor for overall sur...
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