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  Rab3D is not required for exocrine exocytosis but for maintenance of normally sized secretory granules

Riedel, D., Antonin, W., Fernández-Chacón, R., Alvarez de Toledo, G., Jo, T., Geppert, M., et al. (2002). Rab3D is not required for exocrine exocytosis but for maintenance of normally sized secretory granules. Molecular and Cellular Biology (Washington, DC), 22(18), 6487-6497. doi:10.1128/MCB.22.18.6487-6497.2002.

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Datensatz-Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-1901-5 Versions-Permalink: https://hdl.handle.net/11858/00-001M-0000-0029-1902-3
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 Urheber:
Riedel, Dietmar, Autor
Antonin, Wolfram, Autor
Fernández-Chacón, Rafael, Autor
Alvarez de Toledo, Guillermo, Autor
Jo, Tobias, Autor
Geppert, Martin1, Autor
Valentijn, Jack A., Autor
Valentijn, Karin, Autor
Jamieson, James D., Autor
Südhof, Thomas C., Autor
Jahn, Reinhard, Autor
Affiliations:
1Max Planck Institute of Experimental Medicine, Max Planck Society, ou_2173648              

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 Zusammenfassung: Rab3D, a member of the Rab3 subfamily of the Rab/ypt GTPases, is expressed on zymogen granules in the pancreas as well as on secretory vesicles in mast cells and in the parotid gland. To shed light on the function of Rab3D, we have generated Rab3D- deficient mice. These mice are viable and have no obvious phenotypic changes. Secretion of mast cells is normal as revealed by capacitance patch clamping. Furthermore, enzyme content and overall morphology are unchanged in pancreatic and parotid acinar cells of knockout mice. Both the exocrine pancreas and the parotid gland show normal release kinetics in response to secretagogue stimulation, suggesting that Rab3D is not involved in exocytosis. However, the size of secretory granules in both the exocrine pancreas and the parotid gland is significantly increased, with the volume being doubled. We conclude that Rab3D exerts its function during granule maturation, possibly by preventing homotypic fusion of secretory granules.

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Sprache(n): eng - English
 Datum: 2002-09
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: eDoc: 711990
ISI: 000177642900016
DOI: 10.1128/MCB.22.18.6487-6497.2002
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Titel: Molecular and Cellular Biology (Washington, DC)
  Andere : Mol Cell Biol
Genre der Quelle: Zeitschrift
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Affiliations:
Ort, Verlag, Ausgabe: American Society for Microbiology (ASM)
Seiten: - Band / Heft: 22 (18) Artikelnummer: - Start- / Endseite: 6487 - 6497 Identifikator: ISSN: 0270-7306
CoNE: https://pure.mpg.de/cone/journals/resource/954925502188