نتایج جستجو برای: پروتئین xpt
تعداد نتایج: 17933 فیلتر نتایج به سال:
In bacteria, the regulation of gene expression by cis-acting transcriptional riboswitches located in the 5'-untranslated regions of messenger RNA requires the temporal synchronization of RNA synthesis and ligand binding-dependent conformational refolding. Ligand binding to the aptamer domain of the riboswitch induces premature termination of the mRNA synthesis of ligand-associated genes due to ...
Metabolite-sensing mRNAs, or "riboswitches," specifically interact with small ligands and direct expression of the genes involved in their metabolism. Riboswitches contain sensing "aptamer" modules, capable of ligand-induced structural changes, and downstream regions, harboring expression-controlling elements. We report the crystal structures of the add A-riboswitch and xpt G-riboswitch aptamer...
XML is a simple dialect of SGML(Standard Generalized Markup Language). Originally designed to meet the challenges of large-scale electronic publishing, XML has evolved to play an increasingly important role in the exchange of a wide variety of data on the Web and elsewhere. CDISC (Clinical Data Interchange Standards Consortium) has developed several XML-based models for the electronic acquisiti...
Temperature dependent studies of the 1/2(hk0) superlattice reflections (α spots) by synchrotron x-ray scattering measurements were performed in Pb(Mg1/3Nb2/3)O3 (PMN) and [PbMg1/3Nb2/3O3]1−x− [PbTiO3]x (PMN-xPT) with Ti doping x≤ 0.32 single crystals. Separation of the α spots from the underlying diffuse scattering background allowed studying them as separate entities for the first time. Struct...
RNase P from Bacillus subtilis cleaves in vitro the adenine riboswitch upstream of pbuE, which codes for an adenine efflux pump. The guanine riboswitch, encoded upstream of xpt-pbuX operon, is not cleaved. The cleavage sites do not occur at any predicted structures that should be recognized by RNase P in the theoretical model of the adenine riboswitch. However, it is possible to draw alternativ...
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