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Nuclear functions of prefoldin.

Gonzalo Millán-Zambrano1, Sebastián Chávez2

  • 1Instituto de Biomedicina de Sevilla, Hospital Virgen del Rocío-CSIC-Universidad de Sevilla, 41013 Seville, Spain Departamento de Genética, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain.

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Prefoldin, a cochaperone, assists protein folding in the cytoplasm. Emerging evidence reveals its nuclear roles, particularly in gene transcription, suggesting a link between nuclear and cytoplasmic processes.

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Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Prefoldin is a cochaperone that works with the chaperonin CCT.
  • It is primarily known for its role in cytoplasmic folding of actin and tubulin for cytoskeleton assembly.
  • Both prefoldin and prefoldin-like subunits are found in the nucleus, linked to nuclear functions in various organisms.

Purpose of the Study:

  • To review the nuclear functions of prefoldin.
  • To emphasize prefoldin's role in gene transcription.
  • To explore potential coordination between gene regulation and cytoplasmic dynamics by prefoldin.

Main Methods:

  • Literature review of existing studies on prefoldin.
  • Analysis of data on prefoldin's presence and interactions in the nucleus.
  • Synthesis of information regarding prefoldin's involvement in nuclear processes.

Main Results:

  • Prefoldin subunits are present in the nucleus across eukaryotes.
  • Plant prefoldin has been found associated with gene regulators.
  • Evidence suggests a connection between prefoldin and nuclear processes, including gene transcription.

Conclusions:

  • Prefoldin plays roles beyond cytoplasmic protein folding.
  • The nuclear functions of prefoldin, especially in gene transcription, are significant.
  • Prefoldin may mediate a global coordination between nuclear gene regulation and cytoplasmic dynamics.