Rap1 GTPase regulation of adherens junction positioning and cell adhesion - PubMed (original) (raw)

. 2002 Feb 15;295(5558):1285-8.

doi: 10.1126/science.1067549.

Affiliations

• PMID: 11847339
• DOI: 10.1126/science.1067549

Rap1 GTPase regulation of adherens junction positioning and cell adhesion

Andrea L Knox et al. Science. 2002.

Abstract

Cell-cell junctions are distributed evenly around the lateral circumference of cells within an epithelium. We find that the even distribution of adherens junctions is an active process that requires the small guanosine triphosphatase Rap1. Cells mutant for Rap1 condensed their adherens junctions to one side of the cell. This disrupted normal epithelial cell behavior, and mutant cell clones dispersed into the surrounding wild-type tissue. Rap1 is enriched at adherens junctions, particularly between newly divided sister cells where it may reseal the adherens junction ring. The regulation of adherens junction positioning could play a role in cell mobility and cell division.

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