| http://purl.uniprot.org/citations/21148311 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/21148311 | http://www.w3.org/2000/01/rdf-schema#comment | "The stability of p21, a cyclin-dependent kinase inhibitor, is highly regulated by various protein molecules through the cell cycle and in response to extracellular signals. One of the p21 regulators is MDMX, which can directly bind to p21 and mediate its proteasomal degradation in an ubiquitination-independent fashion. The fact that 14-3-3γ binds to the MDMX domain adjacent to p21 binding suggests that this 14-3-3γ may affect MDMX-mediated p21 proteasomal turnover. Indeed, we found that overexpression of 14-3-3γ increased the level of both endogenous and exogenous p21 in p53-null cells by extending its half-life, leading to p21-dependent G1 arrest. Also, 14-3-3γ excluded p21 from binding to MDMX in a dose-dependent manner as determined by co-immunroprecipitation in vitro using purified proteins and in cells. In response to DNA damage, the level of the 14-3-3γ-MDMX complex increased whereas that of the MDMX-p21 complex declined as detected by co-immunoprecipitation assays, leading to the induction of p21 in p53-null cells. Knockdown of 14-3-3γ inversely alleviated the induction of p21 levels by DNA damage. Hence, our study as presented here unravels a new role for 14-3-3γ in protecting p21 from MDMX-mediated proteasomal turnover, which may partially account for DNA damage-induced elevation of p21 levels independent of p53."xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.org/dc/terms/identifier | "doi:10.1074/jbc.m110.190470"xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/author | "Lee J.H."xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/author | "Lu H."xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/date | "2011"xsd:gYear |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/name | "J Biol Chem"xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/pages | "5136-5142"xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/title | "14-3-3Gamma inhibition of MDMX-mediated p21 turnover independent of p53."xsd:string |
| http://purl.uniprot.org/citations/21148311 | http://purl.uniprot.org/core/volume | "286"xsd:string |
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