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The nuclear pore complex and nucleocytoplasmic transport

D D Newmeyer1

  • 1La Jolla Cancer Research Foundation, California 92037.

Current Opinion in Cell Biology
|June 1, 1993
PubMed
Summary

Recent advances in nuclear pore complex research include new 3D structures and identified proteins. Key findings reveal nuclear localization signal recognition proteins and the role of hsc70 in nuclear import.

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Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • The nuclear pore complex (NPC) regulates transport between the nucleus and cytoplasm.
  • Understanding NPC structure and function is crucial for cellular processes.

Purpose of the Study:

  • To summarize recent key discoveries in nuclear pore complex research.
  • To highlight advancements in understanding nuclear transport mechanisms.

Main Methods:

  • Review of recent structural biology studies providing 3D views of the NPC.
  • Biochemical purification and characterization of NPC-associated proteins.
  • Studies investigating protein interactions and cellular localization.

Main Results:

  • Two new three-dimensional structures of the nuclear pore complex were elucidated.
  • A novel nuclear pore complex protein featuring zinc fingers was identified.
  • Nuclear localization signal recognition proteins were purified.
  • Heat shock cognate 70 kDa protein (hsc70) was found to participate in nuclear import.
  • Proteins linked to heterogeneous nuclear RNA were observed to shuttle between nucleus and cytoplasm.
  • A nucleolar nuclear localization signal binding protein was localized to intranuclear tracks and shown to shuttle.

Conclusions:

  • Significant progress has been made in visualizing and understanding the molecular components of the nuclear pore complex.
  • These findings enhance our knowledge of nuclear transport regulation and associated protein functions.

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