کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10954406 | 1097902 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Function and distribution of the SUR isoforms and splice variants
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کلمات کلیدی
KirNBFKATPSUR2BmitoKATPKIR6.1TMDSUR2AKir6.xSUR2Kir6.2ABC proteins - ABC پروتئین هاSUR1 - sur1sur - برtransmembrane domain - دامنه فرابنفشsplice variant - نوع اتصالاتnucleotide-binding fold - نوکلئوتید- اتصال چسبندهGene - ژن KATP channels - کانال های KATPATP-sensitive potassium channel - کانال پتاسیم حساس به ATPsulfonylurea receptor - گیرنده سولفونیل اوره
موضوعات مرتبط
علوم زیستی و بیوفناوری
بیوشیمی، ژنتیک و زیست شناسی مولکولی
بیولوژی سلول
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Alternative splicing allows multiple mRNAs to be generated from a single gene, which in turn can be translated into a group of diverse proteins with different roles and structures. The outcome of alternative splicing leads to the co-existence of multiple splice variants of a gene at different concentrations in different tissues. The pore-forming subunit of the KATP channel (KIR6.x) and the regulatory sulfonylurea receptor (SURx) subunits exist in a 4:4 stoichiometry to form hetero-octameric ATP-sensitive potassium channel (KATP) channels, which are widely distributed in various types of tissues at either the plasma membrane (cellKATP) or mitochondrial inner membrane (the mitochondrial form of KATP channel, mitoKATP). They perform important physiological functions in regulating insulin secretion in pancreatic β-cells, providing ischemic protection in heart and brain, and regulating vascular tone in smooth muscles. Two separate genes, the regulatory subunit protein I (SUR1) and the regulatory subunit protein II (SUR2) encode the high- and low-affinity SUR, respectively. This review summarizes the current studies on the function and distribution of the SUR isoforms and alternative splice variants, and to a lesser extent the KIR6.x subunits. The different isoforms and splice variants allow for many KATP channel combinations, and therefore, increases the channel diversity and the possibility of complexity in function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular and Cellular Cardiology - Volume 39, Issue 1, July 2005, Pages 51-60
Journal: Journal of Molecular and Cellular Cardiology - Volume 39, Issue 1, July 2005, Pages 51-60
نویسندگان
Nian-Qing Shi, Bin Ye, Jonathan C. Makielski,