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Science 14 June 1991:
Vol. 252. no. 5012, pp. 1560 - 1562
DOI: 10.1126/science.1840699

Articles

Science, Vol 252, Issue 5012, 1560-1562
Copyright © 1991 by American Association for the Advancement of Science


articles

A distinct potassium channel polypeptide encoded by the Drosophila eag locus

J Warmke, R Drysdale, and B Ganetzky

Department of Zoology, University of Cambridge, United Kingdom.

Many of the signaling properties of neurons and other electrically excitable cells are determined by a diverse family of potassium channels. A number of genes that encode potassium channel polypeptides have been cloned from various organisms on the basis of their sequence similarity to the Drosophila Shaker (Sh) locus. As an alternative strategy, a molecular analysis of other Drosophila genes that were defined by mutations that perturb potassium channel function was undertaken. Sequence analysis of complementary DNA from the ether a go-go (eag) locus revealed that it encodes a structural component of potassium channels that is related to but is distinct from all identified potassium channel polypeptides.


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Long QT Syndrome Patients With Gene Mutations.
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A functional connection between the pores of distantly related ion channels as revealed by mutant K+ channels.
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   Abstract »    Full Text »    PDF »



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