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Título: | Two-hybrid analysis identifies PSMD11, a non-ATPase subunit of the proteasome, as a novel interaction partner of AMP-activated protein kinase |
Autor: | Moreno, Daniel; Viana, Rosa CSIC ORCID ; Sanz, Pascual CSIC ORCID | Palabras clave: | AMPK Two-hybrid screening Proteasome PSMD11 Phosphorylation |
Fecha de publicación: | dic-2009 | Editor: | Blake and Helsey Editores | Citación: | International Journal of Biochemistry and Cell Biology 41(12):2431-2439. (2009) | Resumen: | Mammalian AMP-activated protein kinase (AMPK) is a heterotrimeric serine/threonine protein kinase that acts as a sensor of cellular energy status. It interacts with a great variety of different substrates leading to short term (i.e. regulation of the activity of different enzymes by direct phosphorylation) and long-term effects (i.e. regulation of transcriptional activity of different transcription factors). In this work, we describe the use of the yeast two-hybrid technology to identify additional proteins that interact with the different subunits of AMPK. We have performed three yeast two-hybrid screenings of a human skeletal muscle cDNA library using three different baits: a constitutively active form of AMPK2 (LexA-AMPK2-T172D) co-expressed with AMPK1, LexA-AMPK2 and LexA-AMPK3. Our results identify novel interaction partners of AMPK in human skeletal muscle. We also further characterize the interaction of AMPK with one of these novel interacting proteins, the non-ATPase subunit of the proteasome PSMD11. Our results indicate that AMPK is able to interact physically with this subunit and modify its phosphorylation status, supporting a possible role for AMPK in regulating proteasome function. | Descripción: | 9 páginas, 2 figuras, 5 tablas | Versión del editor: | http://dx.doi.org/10.1016/j.biocel.2009.07.002 | URI: | http://hdl.handle.net/10261/112294 | DOI: | 10.1016/j.biocel.2009.07.002 | ISSN: | 1357-2725 | E-ISSN: | 1878-5875 |
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2009 Int. J. Biochem Cell Biol 41-2341.pdf | 254,3 kB | Adobe PDF | Visualizar/Abrir |
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