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Journal of Neuroscience, Vol 15, 6250-6259, Copyright © 1995 by Society for Neuroscience
Tissue-specific expression of a Drosophila calcium-activated potassium channel
MN Becker, R Brenner and NS Atkinson
Department of Zoology, University of Texas at Austin 78712-1064, USA.
The Drosophila slowpoke (slo) gene encodes a subunit of a CAK channel
homologous to the vertebrate BK channel. We have examined slo expression
throughout development. It is expressed in muscle cells, neurons of the CNS
and PNS, mushroom bodies, a limited number of cells in embryonic and larval
midgut and in epithelial-derived tracheal cells. The promoter has been
cloned and shown to direct expression in the same pattern as the endogenous
gene in both neural and epithelial- derived cells. During pupariation and
embryogenesis, slo is expressed in muscles many hours prior to the
appearance of functional channels.
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