Divalent Cation Interactions with Light-Dependent K Channels
نویسندگان
چکیده
منابع مشابه
Divalent Cation Interactions with Light-Dependent K Channels
The light-dependent K conductance of hyperpolarizing Pecten photoreceptors exhibits a pronounced outward rectification that is eliminated by removal of extracellular divalent cations. The voltage-dependent block by Ca(2+) and Mg(2+) that underlies such nonlinearity was investigated. Both divalents reduce the photocurrent amplitude, the potency being significantly higher for Ca(2+) than Mg(2+) (...
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The light-dependent K conductance of hyperpolarizing Pecten photoreceptors exhibits a pronounced outward rectification that is eliminated by removal of extracellular divalent cations. The voltage-dependent block by Ca 2 1 and Mg 2 1 that underlies such nonlinearity was investigated. Both divalents reduce the photocurrent amplitude, the potency being significantly higher for Ca 2 1 than Mg 2 1 (...
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ژورنال
عنوان ژورنال: Journal of General Physiology
سال: 1999
ISSN: 0022-1295,1540-7748
DOI: 10.1085/jgp.114.5.653