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Signaling by Small GTPases at Cell-Cell Junctions: Protein Interactions Building Control and Networks

Signaling by Small GTPases at Cell-Cell Junctions: Protein Interactions Building Control and Networks

Cold Spring Harbor perspectives in biology 10(10)

ISSN/ISBN: 1943-0264

PMID: 28893858

DOI: 10.1101/cshperspect.a028746

A number of interesting reports highlight the intricate network of signaling proteins that coordinate formation and maintenance of cell-cell contacts. We have much yet to learn about how the in vitro binding data is translated into protein association inside the cells and whether such interaction modulates the signaling properties of the protein. What emerges from recent studies is the importance to carefully consider small GTPase activation in the context of where its activation occurs, which upstream regulators are involved in the activation/inactivation cycle and the GTPase interacting partners that determine the intracellular niche and extent of signaling. Data discussed here unravel unparalleled cooperation and coordination of functions among GTPases and their regulators in supporting strong adhesion between cells.

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Accession: 060248612

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