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Science 2 February 2007:
Vol. 315. no. 5812, pp. 605 - 606
DOI: 10.1126/science.1138505
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Perspectives

CELL SIGNALING:
beta-Arrestin, a Two-fisted Terminator

Eileen F. Grady

beta-arrestin escorts enzymes to activated receptors, catalyzing the demise of signals that are generated. This may be a common theme among G protein-coupled receptors.

The author is at the UCSF Center for the Neurobiology of Digestive Disease, University of California, San Francisco, CA 94143, USA. E-mail: gradye{at}surgery.ucsf.edu

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Science. ISSN 0036-8075 (print), 1095-9203 (online)