Zinc ions block H+/OH- channels in Chara australis
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چکیده
منابع مشابه
Exogenous melatonin affects photosynthesis in characeae Chara australis
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The patch-clamp technique is used to investigate divalent ion block of the large-conductance K+ channel from Chara australis. Block by Ba2+, Ca2+, Mg2+, and Pt(NH3)4(2+) from the vacuolar and cytoplasmic sides is used to probe the structure of, and ion interactions within, the pore. Five divalent ion binding sites are detected. Vacuolar Ca2+ reduces channel conductance by binding to a site loca...
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We describe an interaction between external Ca(2+) ions and Shaker K channels that is important in the gating of the channels. The interaction was first detected as a partial block of inward K(+) current in elevated Ca(2+), beginning near -40 mV and becoming stronger at more negative voltage. Surprisingly, the time course of the block can be resolved as a rapid decay of inward current magnitude...
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Charasomes are convoluted plasma membrane domains in characean green algae. They are known to form in response to light via secretion of trans-Golgi network (TGN) vesicles and local inhibition of endocytosis. Charasomes are involved in the acidification of their aqueous environment, thereby facilitating photosynthesis-dependent carbon uptake. Charasome formation is reversible to allow cells to ...
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ژورنال
عنوان ژورنال: Plant, Cell & Environment
سال: 2012
ISSN: 0140-7791
DOI: 10.1111/j.1365-3040.2012.02496.x