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Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy
12:24

Mimicking the Function of Signaling Proteins: Toward Artificial Signal Transduction Therapy

Published on: September 29, 2016

Engineering synthetic signaling proteins with ultrasensitive input/output control.

John E Dueber1, Ethan A Mirsky, Wendell A Lim

  • 1Program in Biological Sciences, University of California, San Francisco, California 94158-2517, USA.

Nature Biotechnology
|May 23, 2007
PubMed
Summary

Researchers engineered an ultrasensitive switch from simple protein modules. By adjusting autoinhibitory interactions, they predictably converted linear signaling proteins into nonlinear switches crucial for biological complexity.

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Area of Science:

  • Molecular biology
  • Systems biology
  • Biophysics

Background:

  • Signaling proteins often comprise modular domains.
  • These proteins exhibit complex signal processing behaviors.
  • Ultrasensitivity is a key nonlinear function in biological systems.

Purpose of the Study:

  • To investigate how modular domains can construct an ultrasensitive switch.
  • To demonstrate predictable conversion of linear signaling proteins into nonlinear switches.

Main Methods:

  • Systematic alteration of the number of modular autoinhibitory interactions.
  • Modification of the affinity of modular autoinhibitory interactions.

Main Results:

  • Demonstrated predictable conversion of linear signaling proteins into ultrasensitive switches.
  • Showcased the role of modular domains in creating nonlinear input/output functions.

Conclusions:

  • Modular protein components can be predictably engineered into ultrasensitive switches.
  • This mechanism is fundamental to complex biological signal processing and behavior.