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The ras superfamily proteins

P Chardin1

  • 1INSERM U-248, Faculté de Médecine Lariboisière-Saint-Louis, Paris, France.

Biochimie
|July 1, 1988
PubMed

Insights

The ras gene family, including ras, rho, and rab proteins, is crucial for cell functions like motility. Further research is needed to understand their interactions and precise roles in human tumors.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Oncology

Background:

  • The ras gene family, implicated in human tumors, comprises three main branches: ras/ral/rap, rho, and rab.
  • These proteins share conserved GTP-binding regions but exhibit variations, suggesting distinct biochemical properties.
  • A conserved C-terminal cysteine residue allows for fatty acylation, indicating a role in sub-membrane localization.

Purpose of the Study:

  • To review recent discoveries regarding the ras gene superfamily.
  • To highlight the structural and functional diversity within the ras superfamily.
  • To emphasize the need for further research into protein interactions for functional elucidation.

Main Methods:

  • Literature review of recent discoveries on ras gene family.
  • Analysis of conserved homology regions and structural features.
  • Examination of reported functions in cellular processes.

Main Results:

  • The ras superfamily is divided into three major branches (ras/ral/rap, rho, rab).
  • Proteins possess a conserved GTP-binding site but with significant sequence differences.
  • Evidence suggests involvement in cell motility, membrane ruffling, endocytosis, and exocytosis.

Conclusions:

  • The ras superfamily proteins are structurally diverse yet functionally interconnected.
  • Understanding their precise roles requires characterizing interacting proteins.
  • Further investigation is crucial for comprehending their involvement in cellular processes and diseases like cancer.

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