Eukaryotic mRNA is processed by enzymes and packaged with proteins within nuclei to generate functional messenger ribonucleoprotein (mRNP) particles. Processing and packaging factors can interact with mRNA cotranscriptionally to form an early mRNP. Erroneous mRNP formation leads to nuclear retention and degradation of the mRNA. It therefore appears that one function of cotranscriptional mRNP as...

" Is the Separation of Powers Principle Exportable? " That is the question posed to the contributors to this Symposium. The answer I offer here turns not on abstract principles but on my assessment of the real‐world consequences of exporting the presidential system of separation of powers to other countries. This approach is grounded in the belief that a system of gov‐ ernance should be judged ...

microRNAs (miRNAs), the tiny but stable regulatory RNAs in metazoan cells, can undergo selective turnover in presence of specific internal and external cues to control cellular response against the changing environment. We have observed reduction in cellular miR-122 content, due to their accelerated extracellular export in human hepatic cells starved for small metabolites including amino acids....

The present article studies role of Iran  export insurance fund on agricultural export sector by during 1385-1391.Since activity in agricultural sector is one of the most dangerous economical activities, and the most important problem of planners and politicians of agricultural development reducing risk of economic activities and increasing security coefficient for producers of agricultural sec...

The present article studies role of Iran  export insurance fund on agricultural export sector by during 1385-1391.Since activity in agricultural sector is one of the most dangerous economical activities, and the most important problem of planners and politicians of agricultural development reducing risk of economic activities and increasing security coefficient for producers of agricultural sec...

Nuclear mRNA export mediated by the human protein TAP requires a carboxy-terminal domain that directly interacts with components of the nuclear pore complex. Here we demonstrate that NXF3, a human RNA binding protein related to TAP, lacks this domain yet retains the ability to export tethered RNA transcripts and to shuttle between the nucleus and the cytoplasm. NXF3 contains a novel Crm1-depend...

The main purpose of this study was to determine the factors affecting the export of flowers in Iran. After data collection using by the index of Revealed Comparative Advantage (RCA), the condition of business of flowers in Iran was compared with a number of countries exporting the product. According to the results of study, the small elasticity of the exportation price in the function of export...

Export and the readiness to export constitute the first step of international marketing, which are affected by both internal and external factors of firms. One of the most important internal  factors is the presence of skilled personnel. The purpose of this study was to define the relationship between staff qualification and encouragment with the readiness level of Iranian pharmacuetical firms ...

Different RNA species are rigorously discriminated and exported by distinct export factors, but this discrimination mechanism remains largely unknown. We previously showed, by RNA microinjection experiments, that intronless mRNAs are discriminated from U snRNAs based on their difference in RNA length. However, it was unclear how they are discriminated in the natural situation in which their nas...