Igor Ulitsky
@igorulitsky.bsky.social
2.6K followers
850 following
200 posts
Associate Professor, Weizmann Institute of Science. RNA biologist, interested in what (long) RNA molecules do and how. Father of 4.
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Reposted by Igor Ulitsky
Reposted by Igor Ulitsky
Reposted by Igor Ulitsky
Kurianlab
@kurianlab.bsky.social
· Sep 8
QKI ensures splicing fidelity during cardiogenesis by engaging the U6 tri-snRNP to activate splicing at weak 5ʹ splice sites
During organogenesis, precise pre-mRNA splicing is essential to assemble tissue architecture. Many developmentally essential exons bear weak 5'splice sites (5'SS) yet are spliced with high precision, ...
www.biorxiv.org
Reposted by Igor Ulitsky
Igor Ulitsky
@igorulitsky.bsky.social
· Aug 25
Reposted by Igor Ulitsky
Hiten Madhani
@hitenmadhani.bsky.social
· Aug 21
Igor Ulitsky
@igorulitsky.bsky.social
· Aug 19
Igor Ulitsky
@igorulitsky.bsky.social
· Aug 17
LENG8 mediates RNA nuclear retention and degradation in eukaryotes
In eukaryotes, incompletely processed and misprocessed mRNAs as well as numerous noncoding RNAs are retained in the nucleus and often degraded. However, the mechanisms for this critical quality contro...
www.biorxiv.org
Reposted by Igor Ulitsky
Reposted by Igor Ulitsky
Reposted by Igor Ulitsky
Marc Bühler
@marcbuhler.bsky.social
· Jul 6
Remodeling Activity of ChAHP Restricts Transcription Factor Access to Chromatin
Transcription in eukaryotes is regulated by chromatin-based mechanisms that control nucleosome occupancy, chromatin modifications, and transcription factor binding. We have previously shown that the transcription factor ADNP forms the ChAHP complex with the chromatin remodeler CHD4 and HP1 proteins, acting as a site-specific regulator of transcription and antagonist of CTCF binding. However, the molecular basis of these functions remained unclear. Here, we demonstrate that the CHD4 subunit is essential to antagonize CTCF and silence transcription of transposons, while HP1 proteins are dispensable. Although the remodeling activity of CHD4 is not required for ChAHP chromatin association, it is critical for both transposon repression and CTCF antagonism. Our findings support a model wherein ADNP recruits chromatin remodeling activity in a sequence-specific manner, enabling transcriptional control and local modulation of chromatin architecture. ### Competing Interest Statement The Friedrich Miescher Institute for Biomedical Research (FMI) receives significant financial contributions from the Novartis Research Foundation. Published research reagents from the FMI are shared with the academic community under a Material Transfer Agreement (MTA) having terms and conditions corresponding to those of the UBMTA (Uniform Biological Material Transfer Agreement). Novartis Research Foundation, n.a. Swiss National Science Foundation, grant 310030_188835
www.biorxiv.org
Reposted by Igor Ulitsky
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 3
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1
Igor Ulitsky
@igorulitsky.bsky.social
· Jul 1