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Related Experiment Videos

Chromatin disruption and modification

A P Wolffe1, J J Hayes

  • 1Laboratory of Molecular Embryology, Natational Institute of Child Health and Human Development, NIH, Building 18T, Room 106, Bethesda, MD 20892-5431, USA. awlme@helix.nih.gov

Nucleic Acids Research
|January 16, 1999
PubMed
Summary
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Chromatin modifications alter gene activity through coactivators and corepressors. Understanding histone roles and remodeling machines explains transcriptional regulation.

Area of Science:

  • Molecular Biology
  • Epigenetics
  • Gene Regulation

Background:

  • Chromatin structure is dynamically regulated by modifications and remodeling.
  • These changes are crucial for controlling gene transcription.
  • Coactivators and corepressors mediate these regulatory processes.

Purpose of the Study:

  • To explore the structural underpinnings of chromatin alterations in transcriptional regulation.
  • To discuss the functional outcomes of chromatin modifications during activation and repression.
  • To provide a framework for understanding the roles of chromatin remodeling machines.

Main Methods:

  • Review of recent advances in histone biology and chromatin structure.
  • Analysis of the interplay between histones, domains, and regulatory complexes.

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  • Integration of knowledge on chromatin remodeling machines, histone acetyltransferases, and deacetylases.

    • Main Results:

    • Chromatin alterations are intrinsically linked to transcriptional control.
    • Individual histones and their domains play specific roles in organizing regulatory elements.
    • Chromatin remodeling machines, histone acetyltransferases, and deacetylases are key effectors.

    Conclusions:

    • The structural and functional aspects of chromatin modification are central to gene regulation.
    • Understanding histone contributions provides insight into the mechanisms of transcriptional control.
    • This framework aids in comprehending the function of enzymatic complexes involved in chromatin dynamics.