کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10905763 1086767 2005 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nesprin-1α contributes to the targeting of mAKAP to the cardiac myocyte nuclear envelope
موضوعات مرتبط
علوم زیستی و بیوفناوری بیوشیمی، ژنتیک و زیست شناسی مولکولی تحقیقات سرطان
پیش نمایش صفحه اول مقاله
Nesprin-1α contributes to the targeting of mAKAP to the cardiac myocyte nuclear envelope
چکیده انگلیسی
Muscle A-kinase anchoring protein (mAKAP) is a scaffold protein found principally at the nuclear envelope of striated myocytes. mAKAP maintains a complex consisting of multiple signal transduction molecules including the cAMP-dependent protein kinase A, the ryanodine receptor calcium release channel, phosphodiesterase type 4D3, and protein phosphatase 2A. By an unknown mechanism, a domain containing spectrin repeats is responsible for targeting mAKAP to the nuclear envelope. We now demonstrate that the integral membrane protein nesprin-1α serves as a receptor for mAKAP on the nuclear envelope in cardiac myocytes. Nesprin-1α is inserted into the nuclear envelope by a conserved, C-terminal, klarsicht-related transmembrane domain and forms homodimers by the binding of an amino-terminal spectrin repeat domain. Through the direct binding of the nesprin-1α amino-terminal dimerization domain to the third mAKAP spectrin repeat, nesprin-1α targets mAKAP to the nuclear envelope. In turn, overexpression of these spectrin repeat domains in myocytes can displace mAKAP from nesprin-1α.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Experimental Cell Research - Volume 303, Issue 2, 15 February 2005, Pages 388-399
نویسندگان
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