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Updated: Jan 27, 2026

Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
Published on: August 9, 2019
The sequence-specific nuclear matrix binding factor F6 is a chicken GATA-like protein
Y S Vassetzky1, C V De Moura Gallo, A N Bogdanova
1Institut Jacques Monod, Paris, France.
Chicken factor F6, a GATA protein, binds DNA upstream of alpha-globin genes. It interacts with DNA fragments containing replication origins and nuclear matrix sites, suggesting its role in DNA-nuclear matrix interactions.
Area of Science:
- Molecular Biology
- Genetics
- Cell Biology
Background:
- The sequence-specific DNA-binding protein factor F6 is known to bind upstream of chicken alpha-globin genes.
- Factor F6 has been partially characterized and shows properties consistent with GATA proteins, the avian counterparts of mammalian transcription factor NFE-1.
Purpose of the Study:
- To investigate the role of factor F6 in the interaction between DNA and the nuclear matrix.
- To further characterize factor F6 and its binding properties.
Main Methods:
- Characterization of factor F6 based on molecular weight and binding affinity.
- Competition assays using oligonucleotides containing the F6 binding site to assess its interaction with DNA fragments and the nuclear matrix.
Main Results:
- Factor F6 was identified as a GATA protein, similar to transcription factor NFE-1.
- An oligonucleotide containing the F6 binding site competed for the binding of a DNA fragment (replication origin and nuclear matrix binding site) to the nuclear matrix.
Conclusions:
- Factor F6 plays a role in the interaction between DNA and the nuclear matrix.
- The binding of factor F6 to specific DNA sequences is crucial for its association with the nuclear matrix.
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