Gadd45 in Stress Signaling, Cell Cycle Control, and Apoptosis

  • Jesús M. Salvador
  • Joshua D. Brown-Clay
  • Albert J. FornaceJr.Email author
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 793)


The first identified Gadd45 gene, Gadd45a, encodes a ubiquitously expressed protein that is often induced by DNA damage and other stress signals associated with growth arrest and apoptosis. This protein and the other two members of this small gene family, Gadd45b and Gadd45g, have been implicated in a variety of the responses to cell injury including cell cycle checkpoints, apoptosis, and DNA repair. In vivo, many of the prominent roles for the Gadd45 proteins are associated with signaling mediated by p38 mitogen-activated protein kinases (MAPK). Gadd45 proteins can contribute to p38 activation either by activation of upstream kinase(s) or by direct interaction. In vivo, there are important tissue and cell-type-specific differences in the roles for Gadd45 in MAPK signaling. In addition to being p53-regulated, Gadd45a has been found to contribute to p53 activation via p38. Like other stress and signaling proteins, Gadd45 proteins show complex regulation and numerous effectors.


Proliferate Cell Nuclear Antigen Ionize Radiation Adenomatous Polyposis Coli Nucleotide Excision Repair Genotoxic Stress 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Jesús M. Salvador
    • 1
  • Joshua D. Brown-Clay
    • 2
  • Albert J. FornaceJr.
    • 2
    • 3
    Email author
  1. 1.Department of Immunology and OncologyCentro Nacional de BiotecnologíaMadridSpain
  2. 2.Department of Biochemistry and Molecular and Cellular BiologyGeorgetown UniversityWashington, DCUSA
  3. 3.Lombardi Comprehensive Cancer CenterGeorgetown UniversityWashington, DCUSA

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