New paradigms of CFTR chloride channel regulation |
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Authors: | Kirk K L |
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Institution: | (1) Gregory Fleming James Cystic Fibrosis Research Center, UAB Dept of Physiology and Biophysics, MCLM 738, 1918 University Blvd., 1530 3rd Ave S., Birmingham (Alabama 35294-0005, USA), Fax +1 205 934 1445, e-mail: Kirk@physiology.uab.edu , US |
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Abstract: | The Cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel controls salt and water transport across
epithelial tissues. Alterations in the activity of this ion channel lead to two major human diseases: cystic fibrosis (low
CFTR activity) and secretory diarrhea (excessive CFTR activity). The goal of this article is to review recent developments
in our understanding of two aspects of CFTR biology: (i) interactions between CFTR domains (intramolecular interactions) that
control the gating of this epithelial chloride channel and (ii) interactions between CFTR and other proteins (intermolecular
interactions) that couple the activity of this ion channel to additional cellular processes in epithelial cells (e.g. membrane
traffic). Clarifying the nature of these interactions may lead to the development of novel strategies for treating diseases
that involve the CFTR chloride channel.
Received 12 October 1999; accepted 31 December 1999 |
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Keywords: | , Cystic fibrosis, ion channels, membrane traffic, syntaxins, PDZ domains, epithelial cells, ABC transporters, cystic,,,,,fibrosis transmembrane, conductance regulator, |
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