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Published online
doi:10.1083/jcb.200710021
The Journal of Cell Biology, Vol. 179, No. 3, 371-373
The Rockefeller University Press, 0021-9525 $30.00
© Glembotski
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Getting a G–RRP on regulated exocytosis in the heart



Christopher C. Glembotski

Department of Biology, The SDSU Heart Institute and San Diego State University, San Diego, CA 92182

Correspondence to Christopher Glembotski: cglembotski{at}sciences.sdsu.edu

A study by Rybkin et al. (see p. 527) substantially advances our understanding of regulated exocytois by specialized secretory cells, such as atrial myocytes. A second member of the Ras-related protein family, RRP17, was identified and shown to participate in regulating the secretion of the cardiac-derived peptide hormone, atrial natriuretic peptide. In addition to the heart, RRP17 was shown to be expressed in neuronal, pancreatic, and skeletal muscle cells, suggesting a widespread role in regulated secretion for this new protein.

Abbreviations used in this paper: ANP, atrial natriuretic peptide; CAPS1, calcium-activated protein for secretion 1; LDCV, large dense-core vesicles.


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Related Article

Regulation of atrial natriuretic peptide secretion by a novel Ras-like protein
Igor I. Rybkin, Mi-Sung Kim, Svetlana Bezprozvannaya, Xiaoxia Qi, James A. Richardson, Craig F. Plato, Joseph A. Hill, Rhonda Bassel-Duby, and Eric N. Olson
J. Cell Biol. 2007 179: 527-537. [Abstract] [Full Text] [PDF]





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