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Chapter Seven - When Phosphorylation Encounters Ubiquitination: A Balanced Perspective on IGF-1R Signaling.

L Girnita1, S-I Takahashi2, C Crudden1

  • 1Department of Oncology and Pathology, Cancer Center Karolinska, Karolinska Institutet and Karolinska University Hospital, Stockholm, Sweden.

Progress in Molecular Biology and Translational Science
|July 6, 2016
PubMed
Summary
This summary is machine-generated.

Ubiquitin modification regulates cell signaling pathways, impacting cellular decisions like growth and survival. This research reviews ubiquitin

Keywords:
IGF-1R/IRRTK signalingSUMOylationenzymesposttranslational modificationsubiquitination

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Area of Science:

  • Cellular biology
  • Molecular signaling

Background:

  • Cell-surface receptors control crucial cell functions like survival and growth.
  • Receptor tyrosine kinases (RTKs), including insulin-like growth factor and insulin signaling, are key regulators of physiological and pathological states.
  • Posttranslational modifications, particularly ubiquitination, play a vital role in processing extracellular signals.

Purpose of the Study:

  • To examine the role of ubiquitin regulation in insulin-like growth factor and insulin signaling pathways.
  • To explore how ubiquitination influences receptor tyrosine kinase (RTK) signaling.
  • To understand the divergent biological outcomes mediated by common signaling pathways.

Main Methods:

  • Review of current literature on protein ubiquitination.
  • Analysis of ubiquitin-like proteins and their signaling roles.
  • Examination of ubiquitin regulation within insulin and insulin-like growth factor signaling systems.

Main Results:

  • Ubiquitination is increasingly recognized as a signal for diverse cellular fates beyond protein degradation.
  • Ubiquitin and ubiquitin-like proteins act as critical signal tags.
  • Understanding ubiquitin's role is crucial for comprehending RTK signaling.

Conclusions:

  • Ubiquitin regulation is a key determinant of cellular responses mediated by RTKs.
  • The study highlights the complex role of ubiquitination in fundamental physiological processes.
  • Further research into ubiquitin's role in insulin signaling is warranted.