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Cell Aggregation Assays to Evaluate the Binding of the Drosophila Notch with Trans-Ligands and its Inhibition by Cis-Ligands
Published on: January 2, 2018
A novel Pzg-NURF complex regulates Notch target gene activity
Sabrina J Kugler1, Anja C Nagel
1Institute of Genetics, University of Hohenheim, 70599 Stuttgart, Germany.
Molecular Biology of the Cell
|August 6, 2010
Summary
The study reveals that the Putzig protein interacts with the NURF complex to regulate Notch target genes. This Putzig-NURF complex is crucial for the epigenetic activation of these genes in Drosophila.
Area of Science:
- Developmental biology
- Molecular genetics
- Epigenetics
Background:
- Putzig is known to be part of the TRF2-DREF complex involved in core promoter selection.
- Putzig independently regulates Notch signaling, separate from its role in the TRF2-DREF complex.
Purpose of the Study:
- To investigate the molecular mechanism by which Putzig regulates Notch signaling.
- To identify novel protein complexes associated with Putzig in the context of Notch target gene regulation.
Main Methods:
- Co-immunoprecipitation assays to identify Putzig-interacting proteins.
- Analysis of Putzig binding to Notch target genes in wild-type and mutant Drosophila.
- Assessment of Notch target gene activity and phenotypes in NURF mutants.
Main Results:
- Putzig was found to associate with the Nucleosome Remodeling Factor (NURF) complex.
- Loss of NURF components, including Nurf 301, prevented Putzig binding to Notch target genes.
- Nurf 301 mutants exhibited reduced Notch target gene activity and enhanced Notch mutant phenotypes.
Conclusions:
- A novel Putzig-NURF chromatin complex is identified.
- This complex is essential for the epigenetic activation of Notch target genes.
- NURF acts as a recruitment platform for Putzig to Notch target gene loci.
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