Scientists reveal how Venus fly trap plants snap shut
Credit: © Jane / stock.adobe.comScientists at Scripps Research have revealed the three-dimensional structure of Flycatcher1, an aptly named protein channel that may enable Venus fly trap plants to snap shut in response to prey. The structure of Flycatcher1, published February 14 in, helps shed light on longstanding questions about the remarkably sensitive touch response of Venus fly traps.
Previously, scientists had homed in on three ion channels in Venus fly traps thought to be related to the ability of the carnivorous plant to snap its leaves shut when its sensitive trigger hairs get touched. One, Flycatcher1, caught researchers' attention because its genetic sequence looked similar to a family of mechanosensitive channels, MscS, found in bacteria.
To help elucidate the function of these switches, the researchers altered the linker to disrupt the up position. Flycatcher1, they found, no longer functioned as usual in response to pressure; the channel remained open for a longer duration when it would normally close upon removal of pressure.
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