نتایج جستجو برای: promoter regions
تعداد نتایج: 426640 فیلتر نتایج به سال:
background more than two billion people have been exposed to hepatitis b virus (hbv) worldwide. furthermore, four hundred million of them are infected with chronic hbv infection. the predominant mutation of the precore region involves a g to a change at nucleotide1896, which creates a premature stop codon at codon 28. two mutations of a1762t and g1764a are reported as the most prevalent mutatio...
Available abundant genomic data allows us to study the evolution of the yeast genome at a fine scale. In this study, we examined the adaptive evolution of coding and promoter regions in three Saccharomyces cerevisiae strains. First, using a maximum-likelihood approach, we identified 76 positively selected genes (PSG) whose coding regions likely have undergone positive selection in the recent pa...
The Aplysia genes encoding for cAMP-response element-binding protein 1 (CREB1), CREB2, and ubiquitin C-terminal hydrolase (Ap-uch) have been implicated in the formation of long term memory. However, nothing is known about the promoter regions of these genes or the transcription factors that regulate them. We cloned the promoter regions of creb1, creb2, and Ap-uch and identified a canonical cAMP...
objective: breast cancer is one of the most common malignancies in women worldwide. it is caused by a number of genetic and epigenetic factors. aberrant hypermethylation of the promoter regions in specific genes is a key event in the formation and progression of breast cancers as well as the dbc2 gene, as a tumor suppressor gene. different studies show that the dbc2 gene is inactivated through ...
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