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Engineering synthetic signaling proteins with ultrasensitive input/output control

by: John E. Dueber, Ethan A. Mirsky, Wendell A. Lim
Nature Biotechnology, Vol. 25, No. 6. (21 May 2007), pp. 660-662, doi:10.1038/nbt1308  Key: citeulike:1373563

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Abstract

Many signaling proteins are built from simple, modular components, yet display highly complex signal-processing behavior. Here we explore how modular domains can be used to build an ultrasensitive switch—a nonlinear input/output function that is central to many complex biological behaviors. By systematically altering the number and affinity of modular autoinhibitory interactions, we show that we can predictably convert a simple linear signaling protein into an ultrasensitive switch.


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