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Related Experiment Videos

Chromatin, transcript elongation and alternative splicing.

Alberto R Kornblihtt

    Nature Structural & Molecular Biology
    |January 6, 2006
    PubMed
    Summary
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    The SWI/SNF chromatin remodeler controls gene expression by influencing alternative splicing. It acts as a roadblock during transcription, altering RNA polymerase II phosphorylation.

    Area of Science:

    • Molecular Biology
    • Gene Regulation
    • Chromatin Dynamics

    Background:

    • Alternative splicing is a key mechanism for generating proteomic diversity.
    • The SWI/SNF complex is a known regulator of chromatin structure and transcription.
    • Understanding the precise mechanisms linking chromatin remodeling to splicing is crucial.

    Discussion:

    • This study identifies a novel role for the SWI/SNF complex in regulating alternative splicing.
    • The findings suggest that SWI/SNF-mediated chromatin alterations create specific pausing sites for RNA polymerase II.
    • These pausing sites are associated with qualitative changes in RNA polymerase II phosphorylation, impacting splicing decisions.

    Key Insights:

    • The SWI/SNF complex directly influences alternative splicing outcomes.

    Related Experiment Videos

  • Internal roadblocks to transcriptional elongation are a mechanism employed by SWI/SNF.
  • Phosphorylation status of RNA polymerase II is a critical readout of SWI/SNF's regulatory activity.

    • Outlook:

    • Further investigation into the specific kinases and phosphatases involved in regulating RNA pol II phosphorylation at these sites.
    • Exploring the broader implications of SWI/SNF-mediated splicing control in development and disease.
    • Potential therapeutic targeting of SWI/SNF-regulated splicing pathways.