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Colworth memorial lecture. Pathways for remodelling chromatin.

T Owen-Hughes1

  • 1Division of Gene Regulation and Expression, The Wellcome Trust Biocentre, Department of Biochemistry, University of Dundee, Dundee, DD1 5EH, UK. t.a.owenhughes@dundee.ac.uk

Biochemical Society Transactions
|September 25, 2003
PubMed
Summary

ATP-dependent chromatin-remodeling enzymes alter gene regulation by changing chromatin structure. These enzymes reposition nucleosomes along DNA, influencing DNA twist and writhe for efficient gene control.

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Area of Science:

  • Molecular Biology
  • Epigenetics
  • Genetics

Background:

  • Chromatin structure is crucial for gene regulation in eukaryotes.
  • ATP-dependent chromatin-remodeling enzymes are key players in manipulating this structure.
  • These enzymes are implicated in various nuclear processes.

Purpose of the Study:

  • To define the specific alterations to chromatin structure generated by ATP-dependent remodeling enzymes.
  • To understand the diverse mechanisms these enzymes employ.
  • To explore their role in nucleosome positioning and DNA dynamics.

Main Methods:

  • Analysis of chromatin structure alterations.
  • Investigation of nucleosome positioning changes.
  • Studies on enzyme translocation along DNA.

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Main Results:

  • ATP-dependent remodeling enzymes alter chromatin structure.
  • Nucleosome repositioning is a common but variable outcome.
  • Enzymes can translocate along DNA, affecting DNA twist and writhe.

Conclusions:

  • ATP-dependent chromatin remodelers are essential for gene regulation.
  • Their ability to translocate along DNA facilitates nucleosome repositioning.
  • Understanding these mechanisms provides insight into nuclear processes.