Sign in

Keiichi Ito

@itok10918.bsky.social
131 followers 234 following 11 posts

Research assoc. at the Rockefeller Univ. working on transcriptional regulation Ph.D. Stem cell/developmental biology at the Univ. of Tokyo.

PostsRepliesMedia
Keiichi Ito @itok10918.bsky.social · 09/10/2026
Sequence specificty via cell-specific RBP cooperativity
000
Keiichi Ito @itok10918.bsky.social · 01/10/2026
Cool work www.nature.com/articles/s41...
nature.com
Transcription pause and elongation regulators mediate somatic hypermutation - Nature
The molecular factors and mechanisms that mediate the chromatin recruitment of activation-induced deaminase and the generation of its stalled polymerase II substrate during somatic hypermutation are i...
000
Reposted by Keiichi Ito
Alan Gerber @alangerber.bsky.social · 28/09/2026
Preprint alert 🚨: We built a CRISPRi screen for a part of the genome that is unusually awkward to perturb: the RNA Pol III transcriptome. Hundreds of tRNA genes, lots of sequence similarity, plenty of redundancy... Turns out the biology had a few surprises for us 👇 www.biorxiv.org/content/10.6...
biorxiv.org
Targeted CRISPRi screening reveals unexpected resilience across the RNA polymerase III transcriptome
Increased RNA polymerase III (Pol III) activity and tRNA abundance are widely linked to cancer cell growth, yet the functional requirement for individual Pol III genes and core components remains uncl...
12413
Reposted by Keiichi Ito
Takashi Fukaya @fukayalab.bsky.social · 05/02/2026
New preprint from the lab! We identify the ZnF protein Mulberry as a condensation-dependent structural regulator of genome topology that organizes “multi-way regulatory hubs” in early Drosophila embryos. www.biorxiv.org/content/10.6...
04117
Keiichi Ito @itok10918.bsky.social · 16/01/2026
Super interesting approach..! www.science.org/doi/10.1126/...
science.org
A genetically encoded device for transcriptome storage in mammalian cells
Understanding how cells make decisions over time requires the ability to link past molecular states to future phenotypic outcomes. We present TimeVault, a genetically encoded system that records and s...
000
Reposted by Keiichi Ito
Molecular Cell @cp-molcell.bsky.social · 10/11/2025
A mechanism of synergistic Mediator recruitment in RNA polymerase II transcription activation revealed by single-molecule fluorescence
dlvr.it
A mechanism of synergistic Mediator recruitment in RNA polymerase II transcription activation revealed by single-molecule fluorescence
Single-molecule fluorescence microscopy studies by Zhou et al. show that transcription activator proteins bind at UAS/enhancer DNA and then sequentially or simultaneously recruit Mediator coactivator and RNA polymerase II to form an initiation complex precursor. Multiple DNA-bound activators synergistically enhance recruitment by binding to the same Mediator complex.
063
Keiichi Ito @itok10918.bsky.social · 18/06/2025
Awesome www.sciencedirect.com/science/arti...
000
Keiichi Ito @itok10918.bsky.social · 04/06/2025
www.nature.com/articles/s41...
000
Reposted by Keiichi Ito
Rasmus Hartmann-Petersen @rhp-lab.bsky.social · 18/05/2025
With the @lindorfflarsen.bsky.social group we present our map of degrons in all human transcription factors, incl. examples of constitutive degrons in exposed regions & buried degrons that are exposed upon mutation. In addition, we show that most TADs overlap with degrons. Work led by Fia Larsen.
biorxiv.org
Comprehensive degron mapping in human transcription factors
Gene expression is regulated by the targeted degradation of transcription factors through the ubiquitin-proteasome system. Transcription factors destined for degradation are recognized by E3 ubiquitin...
0297
Keiichi Ito @itok10918.bsky.social · 23/04/2025
www.nature.com/articles/s41...
000
Keiichi Ito @itok10918.bsky.social · 30/03/2025
For my weekend reading www.biorxiv.org/content/10.1...
000
Keiichi Ito @itok10918.bsky.social · 18/02/2025
What happens when a modern human-specific amino acid in a neuronal RBP is introduced in a mouse? Please check if this question sounds interesting to you! So happy to see this work published. Congrats to the whole team! www.nature.com/articles/s41...
nature.com
A humanized NOVA1 splicing factor alters mouse vocal communications - Nature Communications
The neuron-specific RNA binding protein NOVA1 has a single amino acid substitution unique to modern humans. Here, the authors characterize the evolutional specificity and the function of the substitut...
031
Keiichi Ito @itok10918.bsky.social · 16/01/2025
Review article for my weekend www.cell.com/action/showP...
031
Reposted by Keiichi Ito
Alessandro Vannini @alessandrovannini.bsky.social · 03/01/2025
Excited to share the (hard) work of @zawarshah.bsky.social in its final form: www.nature.com/articles/s41... A lot of insights into RNA Polymerase selectivity at snRNAs promoters !! As these promoters are often used for heterologous expression of RNAs (ie guide RNAs), you better know how they work
nature.com
Structural insights into distinct mechanisms of RNA polymerase II and III recruitment to snRNA promoters - Nature Communications
The snRNA Activating Protein Complex (SNAPc) mediates snRNA transcription by RNA Pol II and III. Here, the authors have used cryo-EM to resolve the structure of the SNAPc-bound RNA Pol III pre-initiat...
45219
Reposted by Keiichi Ito
bioRxiv Biochemistry @biorxiv-biochem.bsky.social · 12/12/2024
Mechanisms of synergistic Mediator recruitment in RNA polymerase II transcription activation revealed by single-molecule fluorescence www.biorxiv.org/content/10.1101/202…
012
Keiichi Ito @itok10918.bsky.social · 29/11/2024
Enjoyed MBSJ2024 alot!
020
Reposted by Keiichi Ito
Alan Gerber @alangerber.bsky.social · 23/11/2024
Post a non-religious photo you think of as holy.
Figure showing the chromatographic resolution of the three nuclear DNA-dependent RNA polymerases from
Sea urchin embryos (Bob Roeder, 18 Feb 1969).
3188
Keiichi Ito @itok10918.bsky.social · 19/11/2024
I will be attending MBSJ2024 (11/26-) and will be staying in Japan for almost a month after the meeting. Hoping to get to know new friends in the field, and also to see my former colleagues. Cannot wait to enjoy sushi🍣 and onsen ♨️! (Been wanting to go back in winter for years)
030