کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9887787 1538439 2005 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Expression of metazoan replication-dependent histone genes
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی زیست شیمی
پیش نمایش صفحه اول مقاله
Expression of metazoan replication-dependent histone genes
چکیده انگلیسی
Histone proteins are essential components of eukaryotic chromosomes. In metazoans, they are produced from the so-called replication-dependent histone genes. The biogenesis of histones is tightly coupled to DNA replication in a stoichiometric manner because an excess of histones is highly toxic for the cell. Therefore, a strict cell cycle-regulation of critical factors required for histone expression ensures exclusive S-phase expression. This review focuses on the molecular mechanisms responsible for such a fine expression regulation. Among these, a large part will be dedicated to post-transcriptional events occurring on histone mRNA, like histone mRNA 3′ end processing, nucleo-cytoplasmic mRNA export, translation and mRNA degradation. Many factors are involved, including an RNA-binding protein called HBP, also called SLBP (for hairpin- or stem-loop-binding protein) that binds to a conserved hairpin located in the 3′ UTR part of histone mRNA. HBP plays a pivotal role in the expression of histone genes since it is necessary for most of the steps of histone mRNA metabolism in the cell. Moreover, the strict S-phase expression pattern of histones is achieved through a fine cell cycle-regulation of HBP. A large part of the discussion will be centered on the critical role of HBP in histone biogenesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biochimie - Volume 87, Issues 9–10, September–October 2005, Pages 827-834
نویسندگان
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