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A NuRD for all seasons.

Xavier J Reid1, Jason K K Low1, Joel P Mackay1

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|July 7, 2022
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Summary
This summary is machine-generated.

The nucleosome-remodeling and deacetylase (NuRD) complex uses different subunit combinations to perform specific functions in various tissues. This paralog switching allows for tailored gene regulation across different cell types.

Keywords:
NuRD complexchromatin remodelingparalog switchingtranscriptional regulation

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Area of Science:

  • Molecular Biology
  • Epigenetics
  • Gene Regulation

Background:

  • The nucleosome-remodeling and deacetylase (NuRD) complex is crucial for gene transcription in multicellular organisms.
  • NuRD consists of seven core subunits, many of which have multiple paralogs.
  • The presence of paralogs suggests potential for functional diversification within the NuRD complex.

Purpose of the Study:

  • To investigate whether the NuRD complex utilizes paralog switching to achieve cell type-specific functions.
  • To explore the functional implications of distinct NuRD complex permutations in different tissues.

Main Methods:

  • Analysis of published quantitative proteomic data from 20 different tissues to determine NuRD complex composition.
  • Utilized a large-scale CRISPR knockout screen in over 1000 human cancer cell lines.
  • Integration of proteomic data with recent scientific reports on NuRD complex function.

Main Results:

  • Evidence strongly supports the hypothesis that NuRD complex composition varies across different tissues.
  • Distinct permutations of the NuRD complex are associated with specific gene expression programs.
  • Paralog switching appears to be a mechanism for tailoring NuRD function.

Conclusions:

  • The NuRD complex exhibits functional plasticity through paralog switching.
  • These distinct NuRD complex variants contribute to tissue-specific gene expression regulation.
  • Understanding NuRD permutations is key to deciphering cell type-specific transcriptional control.