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The HERC proteins: functional and evolutionary insights.

F R Garcia-Gonzalo1, J L Rosa

  • 1Departament de Ciències Fisiològiques II, IDIBELL, Campus de Bellvitge, L'Hospitalet de Llobregat, Universitat de Barcelona, Spain.

Cellular and Molecular Life Sciences : CMLS
|June 22, 2005
PubMed
Summary
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HERC proteins, crucial ubiquitin ligases, are involved in membrane trafficking. This review covers the six human HERC proteins, their structures, and evolutionary roles.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cell Biology

Background:

  • HERC proteins are characterized by HECT and RCC1-like domains.
  • Six HERC genes exist in the human genome, producing small and large protein variants.
  • The first HERC member was discovered nearly a decade ago.

Purpose of the Study:

  • To review available data on the six human HERC proteins.
  • To discuss their roles as ubiquitin ligases in membrane trafficking.
  • To provide an account of HERC protein evolution.

Main Methods:

  • Literature review of HERC protein research.
  • Analysis of HERC gene and protein structures.
  • Comparative evolutionary analysis.

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Main Results:

  • HERC proteins function as ubiquitin ligases.
  • They play a significant role in membrane-trafficking events.
  • Large HERC proteins contain additional functional regions beyond the core domains.

Conclusions:

  • HERC proteins are essential regulators of membrane trafficking.
  • Understanding HERC protein diversity and evolution is key to their functional characterization.
  • Further research is needed to fully elucidate the functions of large HERC protein variants.