Getting to the gate: crystallization of a Sac3(CID):Sus1:Cdc31 complex

Area of Science:

• Molecular biology
• Structural biology
• Gene regulation

Background:

• The nuclear pore complex (NPC) regulates transport between the nucleus and cytoplasm.
• Transcription and mRNA export are coupled processes.
• TREX2 is involved in mRNA processing and export.

Purpose of the Study:

• To determine the crystal structure of a key region of TREX2.
• To provide a physical basis for the interaction between transcription and export machineries.
• To understand the mechanism of gene gating at the nuclear pore.

Main Methods:

• X-ray crystallography
• Protein structure determination
• Biochemical assays

Main Results:

• The crystal structure of a TREX2 region was elucidated.
• This structure reveals a physical framework for the interaction of transcription and export factors.
• The findings suggest a mechanism for how genes are gated to the nuclear pore.

Conclusions:

• The determined TREX2 structure provides insights into the coordination of transcription and mRNA export.
• This work offers a molecular understanding of gene gating at the nuclear pore.
• The findings have implications for understanding gene regulation and nuclear transport.