The spacer protein Spc110p targets calmodulin to the central plaque of the yeast spindle pole body

Spang, A. and Grein, K. and Schiebel, E.. (1996) The spacer protein Spc110p targets calmodulin to the central plaque of the yeast spindle pole body. Journal of Cell Science, 109 (9). pp. 2229-2237.

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Official URL: http://edoc.unibas.ch/dok/A5259770

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Yeast calmodulin (CaM) was found to be localized to the microtubule organizing centre, the spindle pole body. The spindle pole body is a multi-layered structure consisting of outer, central and inner plaques. In this paper, we report that a fraction of CaM is in association with the central plaque of the spindle pole body. This localization is dependent on the calmodulin-binding site of another spindle pole body component, Spc110p, which serves as a spacer connecting the inner plaque with the central plaque. Since the CaM-binding site of Spc110p is located near the carboxy terminus, Spc110p-dependent localization of calmodulin defines the orientation of Spc110p with the carboxy terminus towards the central plaque and the amino terminus towards the inner plaque. This orientation of Spc110p was confirmed using antibodies specific for the amino-terminal end of Spc110p, which predominantly labelled the inner plaque. In addition, synthetic peptides corresponding to the calmodulin-binding site of Spc110p bound to calmodulin with a Kd in the nanomolar range and nearly independent of Ca2+.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Growth & Development > Biochemistry (Spang)
UniBasel Contributors:Spang, Anne
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Company of Biologists
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:16 Nov 2017 15:19
Deposited On:22 Mar 2012 13:23

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