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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-4278

Rindler, M J; Xu, C-F; Gumper, I; Cen, C; Sonderegger, P; Neubert, T A (2008). Calsyntenins are secretory granule proteins in anterior pituitary gland and pancreatic islet alpha cells. Journal of Histochemistry and Cytochemistry, 56(4):381-388.

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Calsyntenins are members of the cadherin superfamily of cell adhesion molecules. They are present in postsynaptic membranes of excitatory neurons and in vesicles in transit to neuronal growth cones. In the current study, calsyntenin-1 (CST-1) and calsyntenin-3 (CST-3) were identified by mass spectrometric analysis (LC-MS/MS) of integral membrane proteins from highly enriched secretory granule preparations from bovine anterior pituitary gland. Immunofluorescence microscopy on thin frozen sections of rat pituitary revealed that CST-1 was present only in gonadotropes where it colocalized with follicle-stimulating hormone in secretory granules. In contrast, CST-3 was present not only in gonadotrope secretory granules but also in those of somatotropes and thyrotropes. Neither protein was detected in mammatropes. In addition, CST-1 was also localized to the glucagon-containing secretory granules of alpha cells in the pancreatic islets of Langerhans. Results indicate that calsyntenins function outside the nervous system and potentially are modulators of endocrine function.


2 citations in Web of Science®
2 citations in Scopus®
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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Department of Biochemistry
07 Faculty of Science > Department of Biochemistry
Dewey Decimal Classification:570 Life sciences; biology
Uncontrolled Keywords:pituitary gland • pancreas • calsyntenin • secretory granules • follicle-stimulating hormone • glucagon • insulin • growth hormone • prolactin
Date:April 2008
Deposited On:27 Oct 2008 08:39
Last Modified:05 Apr 2016 12:29
Publisher:Sage Publications
Publisher DOI:10.1369/jhc.7A7351.2007
Official URL:http://www.jhc.org/cgi/content/abstract/56/4/381
PubMed ID:18158283

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