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Structure of cell signaling molecule suggests general on-off switch

A three-dimensional image of one of the proteins that serves as an on-off switch as it binds to receptors on the surface of a cell suggests there may be a sort of main power switch that could be tripped. These surface receptors are responsible for helping cells discern light, set the heart racing, or detect pain.

Fuente : http://www.eurekalert.org/pub_releases/2013-04/dum…

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