Mechanosensitive Channel Activation by Diffusio-Osmotic Force
نویسندگان
چکیده
منابع مشابه
Mechanosensitive channel activation by diffusio-osmotic force.
For ion channel gating, the appearance of two distinct conformational states and the discrete transitions between them are essential, and therefore of crucial importance to all living organisms. We show that the physical interplay between two structural elements that are commonly present in bacterial mechanosensitive channels--namely, a charged vestibule and a hydrophobic constriction--creates ...
متن کاملSingle-channel mechanosensitive currents.
Morris and Horn (1) describe ion channel activity, elicited by mechanical stimulation, in both membrane patches and in whole neurons from the snail Lymnaea stagnalis. In whole-cell recordings, mechanical stimulation did not elicit the large macroscopic mechanosensitive currents (IMs) that were anticipated from studies of single mechanosensitive (MS) channels in membrane patches. These negative ...
متن کاملSingle-channel mechanosensitive currents.
Morris and Horn (1) describe ion channel activity, elicited by mechanical stimulation, in both membrane patches and in whole neurons from the snail Lymnaea stagnalis. In whole-cell recordings, mechanical stimulation did not elicit the large macroscopic mechanosensitive currents (IMs) that were anticipated from studies of single mechanosensitive (MS) channels in membrane patches. These negative ...
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Pollen grains undergo dramatic changes in cellular water potential as they deliver the male germ line to female gametes, and it has been proposed that mechanosensitive ion channels may sense the resulting mechanical stress. Here, we identify and characterize MscS-like 8 (MSL8), a pollen-specific, membrane tension-gated ion channel required for pollen to survive the hypoosmotic shock of rehydrat...
متن کاملThe rate of osmotic downshock determines the survival probability of bacterial mechanosensitive channel mutants.
Mechanosensitive (MS) channels allow cells to sense and respond to environmental changes. In bacteria, these channels are believed to protect against an osmotic shock. The physiological function of these channels has been characterized primarily by a standardized assay, where aliquots of batch-cultured cells are rapidly pipetted into a hypotonic medium. Under this method, it has been inferred m...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2014
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.113.148101