نتایج جستجو برای: initiator chemical
تعداد نتایج: 385338 فیلتر نتایج به سال:
In all domains of life, initiator tRNA functions exclusively at the first step of protein synthesis while elongator tRNAs extend the polypeptide chain. Unique features of initiator tRNA enable it to preferentially bind the ribosomal P site and initiate translation. Recently, we showed that the abundance of initiator tRNA also contributes to its specialized role. This motivates the question, can...
The human immunodeficiency virus type 1 (HIV-1) core promoter region, extending approximately from nucleotides -40 to +80 relative to the transcription start site, contains a complex array of putative regulatory elements, including a TATA box, an initiator element, an element between the TATA box and start site, binding sites for LBP/UBP, the TAR element, and others. However, because of this el...
polyacrylontrile synthesis, via atom transfer radical polymerization, is studied in various initiator concentrations, transitional metal catalyst and different concentrations of cubr2. the variations of monomer conversion and the lin-earity of semi-logarithmic kinetic profile which is the evidence of living polymerization and constant radical concentration in the reaction medium, were revealed ...
The initiation of DNA replication of plasmid R6K is triggered by a 35-kldodalton initiator protein. The initiator protein had been elusive because of its lability and the lack of a convenient assay procedure to aid its purification. Using recombinant DNA techniques, we have fused the cistron of the initiator near its COOH-terminal end, in the correct reading frame, to the lacZ cistron of Escher...
Apoptosis executed by the mammalian caspase family plays a fundamental role in cellular homeostasis. Deregulation of this process is associated with several human diseases. The multimerization of ligand-induced death receptors results in the recruitment of the death inducing signaling complex and autocatalytic activation of initiator caspases, including caspase-8 and -10. However, it is still u...
This paper investigates the strategic use of cross-promotion for content producers in social media. In particular, we study how a producer chooses other producers to cross-promote so as to maximize the expected benefits of them cross-promoting him/her in return. Theories on homophily effect and social influence suggest that cross-promoted producers are more likely to cross-promote the initiator...
pT181 and other closely related rolling circle plasmids have the nicking site for initiation of replication between the arms of a GC-rich inverted repeat sequence adjacent to the binding site for the dimeric initiator protein. Replication is initiated by the initiator-induced extrusion of this sequence as a cruciform, creating a single-stranded region for nicking by the protein. Nicking is foll...
The initiator tRNAsMet from the cytoplasm and chloroplasts of Phaseolus vulgaris have been purified and sequenced. The sequence of bean cytoplasmic initiator tRNAiMet is : pA-U-C-A-G-A-G-U-m1G-m2G-C-G-C-A-G-C-G-G-A-A-G-C-G-U-m2G-G-U-G-G-G2-C-C-C-A-U-t6A-A-C-C-C-A-C-A-G-m7G-D-m5C-C-C-A-G-G-A-psi-C-G-m1A-A-A-C-C-U-Gm-G-C-U-C-U-G-A-U-A-C-C-AOH. The sequence of bean cytoplasmic tRNAiMet is almost i...
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