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Hundsrucker, C.* ; Skroblin, P.* ; Christian, F.* ; Zenn, H.M.* ; Popara, V.* ; Joshi, M.* ; Eichhorst, J.* ; Wiesner, B.* ; Herberg, F.W.* ; Reif, B.* ; Rosenthal, W.* ; Klussmann, E.*

Glycogen synthase kinase 3beta interaction protein functions as an A-kinase anchoring protein.

J. Biol. Chem. 285, 5507-5521 (2010)
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Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
A-kinase anchoring proteins (AKAPs) include a family of scaffolding proteins that target protein kinase A (PKA) and other signaling proteins to cellular compartments and thereby confine the activities of the associated proteins to distinct regions within cells. AKAPs bind PKA directly. The interaction is mediated by the dimerization and docking domain of regulatory subunits of PKA and the PKA-binding domain of AKAPs. Analysis of the interactions between the dimerization and docking domain and various PKA-binding domains yielded a generalized motif allowing the identification of AKAPs. Our bioinformatics and peptide array screening approaches based on this signature motif identified GSKIP (glycogen synthase kinase 3beta interaction protein) as an AKAP. GSKIP directly interacts with PKA and GSK3beta (glycogen synthase kinase 3beta). It is widely expressed and facilitates phosphorylation and thus inactivation of GSK3beta by PKA. GSKIP contains the evolutionarily conserved domain of unknown function 727. We show here that this domain of GSKIP and its vertebrate orthologues binds both PKA and GSK3beta and thereby provides a mechanism for the integration of PKA and GSK3beta signaling pathways.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0021-9258
e-ISSN 1083-351X
Quellenangaben Band: 285, Heft: 8, Seiten: 5507-5521 Artikelnummer: , Supplement: ,
Verlag American Society for Biochemistry and Molecular Biology
Begutachtungsstatus Peer reviewed