Rapid endocytosis of the cystic fibrosis transmembrane conductance regulator chloride channel.
نویسندگان
چکیده
منابع مشابه
Rapid endocytosis of the cystic fibrosis transmembrane conductance regulator chloride channel.
The cystic fibrosis transmembrane conductance regulator (CFTR) chloride channel is found at the apical region of exocrine epithelial cells, both at the cell surface and in an apically localized intracellular compartment. To determine if this internal pool was due to endocytosis, a technique was developed that allows the rate of CFTR internalization from the cell surface to be monitored. A two-s...
متن کاملChloride channel and chloride conductance regulator domains of CFTR, the cystic fibrosis transmembrane conductance regulator.
CFTR is a cyclic AMP (cAMP)-activated chloride (Cl-) channel and a regulator of outwardly rectifying Cl- channels (ORCCs) in airway epithelia. CFTR regulates ORCCs by facilitating the release of ATP out of cells. Once released from cells, ATP stimulates ORCCs by means of a purinergic receptor. To define the domains of CFTR important for Cl- channel function and/or ORCC regulator function, mutan...
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Different transmembrane (TM) α helices are known to line the pore of the cystic fibrosis TM conductance regulator (CFTR) Cl(-) channel. However, the relative alignment of these TMs in the three-dimensional structure of the pore is not known. We have used patch-clamp recording to investigate the accessibility of cytoplasmically applied cysteine-reactive reagents to cysteines introduced along the...
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Description The cystic fibrosis transmembrane regulator (CFTR) gene codes for the CFTR protein; a chloride channel protein that helps in the transportation of chloride ions and water molecules across the cell membranes of lungs, liver, pancreas, and skin. CFTR is a member of the ATP-binding cassette family of membrane transport proteins, but appears to be unique within this family by functionin...
متن کاملCystic Fibrosis Transmembrane Conductance Regulator
The cystic fibrosis transmembrane conductance regulator (CFTR) Cl channel exhibits lyotropic anion selectivity. Anions that are more readily dehydrated than Cl exhibit permeability ratios (P(S)/P(Cl)) greater than unity and also bind more tightly in the channel. We compared the selectivity of CFTR to that of a synthetic anion-selective membrane [poly(vinyl chloride)-tridodecylmethylammonium chl...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1994
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.91.11.5192