The Homer-1 protein Ania-3 interacts with the plasma membrane calcium pump.

Véronique Sgambato-Faure 1 Yuning Xiong 2 Joshua Berke 1, 3 Steven Hyman 1, 4 Emanuel Strehler 2
1 Molecular Plasticity Section
2 Department of Biochemistry and Molecular Biology
3 Department of Psychology
4 Harvard University [Cambridge]
Abstract : The Homer family of scaffold proteins couples NMDA receptors to metabotropic glutamate receptors and links extracellular signals to calcium release from intracellular stores. Ania-3 is a member of the Homer family and is rapidly inducible in brain in response to diverse stimuli. Here, we report the identification of the plasma membrane Ca2+ ATPase (PMCA) as a novel Ania-3/Homer-associated protein. Ania-3/Homer interacts with the b-splice forms of all PMCAs (PMCA1b, 2b, 3b, and 4b) via their PDZ domain-binding COOH-terminal tail. Ectopically expressed Ania-3 colocalized with the PMCA at the plasma membrane of polarized MDCK epithelial cells, and endogenous Ania-3/Homer and PMCA2 are co-expressed in the soma and dendrites of primary rat hippocampal neurons. The interaction between Ania-3/Homer and PMCAs may represent a novel mechanism by which local calcium signaling and hence synaptic function can be modulated in neurons.
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Biochemical and Biophysical Research Communications, Elsevier, 2006, 343 (2), pp.630-7. 〈10.1016/j.bbrc.2006.03.020〉
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Contributeur : Marc Savasta <>
Soumis le : jeudi 4 juin 2009 - 12:05:23
Dernière modification le : jeudi 11 juin 2009 - 15:44:22

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Véronique Sgambato-Faure, Yuning Xiong, Joshua Berke, Steven Hyman, Emanuel Strehler. The Homer-1 protein Ania-3 interacts with the plasma membrane calcium pump.. Biochemical and Biophysical Research Communications, Elsevier, 2006, 343 (2), pp.630-7. 〈10.1016/j.bbrc.2006.03.020〉. 〈inserm-00391633〉

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