Open AccessPotassium-selective channel in the red beet vacuolar membrane
Author(s) -
Igor Pottosin
Publication year - 2003
Publication title -
journal of experimental botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.616
H-Index - 242
eISSN - 1460-2431
pISSN - 0022-0957
DOI - 10.1093/jxb/erg067
Subject(s) - potassium , potassium channel , chemistry , membrane , biophysics , channel (broadcasting) , botany , biology , biochemistry , computer science , telecommunications , organic chemistry
In higher plants the vacuolar K(+)-selective (VK) channel was identified solely in guard cells. This patch-clamp study describes a 40 pS homologue of the VK channel in Beta vulgaris taproot vacuoles. This voltage-independent channel is activated by submicromolar Ca(2+), and is ideally selective for K(+) over Cl(-) and Na(+).
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