Calcium-dependent inactivation of light-sensitive channels in Drosophila photoreceptors.
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چکیده
منابع مشابه
Calcium-dependent inactivation of light-sensitive channels in Drosophila photoreceptors
Whole-cell voltage clamp recordings were made from photoreceptors of dissociated Drosophila ommatidia under conditions when the light-sensitive channels activate spontaneously, generating a "rundown current" (RDC). The Ca2+ and voltage dependence of the RDC was investigated by applying voltage steps (+80 to -100 mV) at a variety of extracellular Ca2+ concentrations (0-10 mM). In Ca(2+)-free Rin...
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A preparation of dissociated Drosophila ommatidia is described that allows single-channel and whole-cell patch-clamp analysis of currents in identified sensory neurons. Three distinct classes of voltage-sensitive potassium conductances are characterized; all were detected in distal parts of ommatidia from sevenless mutants and hence in one cell class (R1-6 photoreceptors). Rapidly inactivating ...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1994
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.103.3.409