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Ultraconserved Sequences Associated with HoxD Cluster Have Strong Repression Activity
Gopal Kushawah1, Rakesh K Mishra1
1CSIR- Centre for Cellular and Molecular Biology, Hyderabad, India.
Genome Biology and Evolution
|September 2, 2017
Summary
Ultraconserved DNA sequences, a conserved noncoding genome component, function as repressors. This finding reveals their role in regulating developmental genes, offering new insights into genome complexity.
Area of Science:
- Evolutionary biology
- Genomics
- Developmental biology
Background:
- Organismal complexity correlates with increased noncoding DNA content.
- Most noncoding genome components remain uncharacterized.
- Ultraconserved DNA sequences are highly conserved noncoding elements in vertebrate genomes.
Purpose of the Study:
- To investigate the function of ultraconserved DNA sequences.
- To determine the role of a specific ultraconserved sequence upstream of the HoxD cluster.
Main Methods:
- Functional analysis in various cell lines.
- In vivo studies using zebrafish models.
Main Results:
- Ultraconserved sequences identified upstream of the HoxD cluster function as repressor elements.
- This study provides the first evidence for the repressor function of ultraconserved sequences.
Conclusions:
- Ultraconserved sequences play a role in regulating developmental genes.
- These findings contribute to understanding the function of noncoding DNA in evolution and development.
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