Cell Biochemistry and Biophysics

, Volume 67, Issue 1, pp 15–24

Regulators and Effectors of Siah Ubiquitin Ligases

  • Jianfei Qi
  • Hyungsoo Kim
  • Marzia Scortegagna
  • Ze’ev A. Ronai
Original Paper

DOI: 10.1007/s12013-013-9636-2

Cite this article as:
Qi, J., Kim, H., Scortegagna, M. et al. Cell Biochem Biophys (2013) 67: 15. doi:10.1007/s12013-013-9636-2

Abstract

The Siah ubiquitin ligases are members of the RING finger E3 ligases. The Siah E3s are conserved from fly to mammals. Primarily implicated in cellular stress responses, Siah ligases play a key role in hypoxia, through the regulation of HIF-1α transcription stability and activity. Concomitantly, physiological conditions associated with varying oxygen tension often highlight the importance of Siah, as seen in cancer and neurodegenerative disorders. Notably, recent studies also point to the role of these ligases in fundamental processes including DNA damage response, cellular organization and polarity. This review summarizes the current understanding of upstream regulators and downstream effectors of Siah.

Keywords

Siah1Siah2Ubiquitin ligaseHypoxiaStress signalingDNA damage

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Jianfei Qi
    • 1
  • Hyungsoo Kim
    • 1
  • Marzia Scortegagna
    • 1
  • Ze’ev A. Ronai
    • 1
  1. 1.Signal Transduction ProgramCancer Center, Sanford-Burnham Medical Research InstituteLa JollaUSA