کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8476227 1550592 2011 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
An ENU-induced point mutation in the mouse Btaf1 gene causes post-gastrulation embryonic lethality and protein instability
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی بیولوژی سلول
پیش نمایش صفحه اول مقاله
An ENU-induced point mutation in the mouse Btaf1 gene causes post-gastrulation embryonic lethality and protein instability
چکیده انگلیسی
The mouse Btaf1 gene, an ortholog of yeast MOT1, encodes a highly conserved general transcription factor. The function of this SNF2-like ATPase has been studied mainly in yeast and human cells, which has revealed that it binds directly to TBP, forming the B-TFIID complex. This complex binds to core promoters of RNA polymerase II-transcribed genes and, of crucial importance, BTAF1-TBP interactions have been shown to affect the kinetics of TBP-promoter interactions. Here we report the isolation of a mouse line carrying a Btaf1 allele containing an ENU-induced point mutation that causes a substitution mutation in the BTAF1 ATPase domain. Embryos homozygous for this loss-of-function mutation appear to be morphologically normal until early somite stages, but die between embryonic days 9 and 10.5 displaying growth arrest and edema. Analyses in vitro suggest that the altered protein is less stable and, independent from this, functionally impaired in releasing of TBP from chromatin, but not in binding to TBP.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mechanisms of Development - Volume 128, Issues 5–6, May–June 2011, Pages 279-288
نویسندگان
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