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Regulated Expression and Function of the c-Myc Antagonist, Mad1, During a Molecular Switch from Proliferation to Differentiation

  • C. M. Cultraro
  • T. Bino
  • S. Segal
Part of the Current Topics in Microbiology and Immunology book series (CT MICROBIOLOGY, volume 224)

Abstract

Myc, Max, Mad, Mxi1 and mSin3 comprise a transcription factor superfamily in which the central protein is Max. All family members (except mSin3) must dimerize with Max through their respective helix loop helix (HLH) and leucine zipper (LZ) domains to cooperatively bind DNA in a sequence specific manner (reviewed in [15]). In contrast to the transactivating property of Myc/Max heterodimers [1, 18, 21], Max heterodimerization with Mad or Mxi1, followed by the tethering of mSin3, to target genes results in suppression of transcription [3, 33]. Although Mad/Max heterodimers have been shown to antagonize Myc function in transformation and the mechanism(s) involved require multiple protein-protein and protein-DNA interactions [4, 20, 23, 33], how Mad functions in differentiation is unknown.

Keywords

Leucine Zipper Spontaneous Differentiation Murine Erythroleukemia Cell Hexamethylene Bisacetamide Mouse Erythroleukemia Cell 
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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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • C. M. Cultraro
    • 1
  • T. Bino
    • 1
  • S. Segal
    • 1
    • 2
  1. 1.NCI-Navy Medical Oncology Branch, National Cancer Institute, NIHUniversity of Health SciencesBethesdaUSA
  2. 2.Uniformed ServicesUniversity of Health SciencesBethesdaUSA

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