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Genomic Maintenance: The p53 Poly(ADP-ribosyl)ation Connection

The integrity of the genome in higher eukaryotes, as well as the modulation of its complex structure and functions, is exquisitely regulated. This genomic regulation occurs as a function of time in a very sophisticated and elaborate biological process called cell cycle progression, resulting in cell division, and is also controlled by a highly coordinated and intricate network of molecular signaling pathways, which in turn orchestrate very specific macromolecular interactions among nuclear proteins and DNA at the biochemical level. Among the latter, a prominent enzymatic cycle that is involved in maintaining the integrity of mammalian chromosomes is covalent protein-poly[adenosine diphosphate (ADP)–ribosyl]ation. The importance of this posttranslational modification is illustrated by the close cooperation between two "guardian angels" of the genome, one constitutive and one inducible protein, namely poly(ADP-ribose) polymerase–1 (PARP-1) and p53, and the integration of these pivotal signaling processes with genomic maintenance.

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Classifications


Resource Type: Bibliography, Diagram, Illustration, Journal article/Issue, Review
Audience Level: Undergraduate upper division 15-16, Graduate, Professional (degree program)

Author and Copyright


Authors and Editors: Rafael Alvarez-Gonzalez of Department of Biomedical Sciences, University of North Texas Health Science Center
Publisher: American Association for the Advancement of Science
Format: application/pdf, image/gif, image/jpeg, text/html
Copyright and other restrictions: Yes
Cost: Yes

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STKE/Science Signaling


     
   

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