Joshua Modell Profile
Joshua Modell

@jwmodell

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614
Following
173
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Statuses
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Assistant Professor of Molecular Biology and Genetics @ Johns Hopkins School of Medicine

Baltimore, MD
Joined September 2014
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@jwmodell
Joshua Modell
1 month
RT @deniswirtz: Research Saves Lives . At Johns Hopkins, we just went live with an expansive website showing the extraordinary value of re….
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@jwmodell
Joshua Modell
8 months
RT @NatureMicrobiol: OUT NOW 🦠 Prediction of strain level phage-host interactions across the Escherichia genus using only genomic informati….
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@jwmodell
Joshua Modell
8 months
RT @alexjmeeske: Many bacteria have >1 CRISPR system, and they affect each other! @shallymarg found a 3-way interaction that leads to prime….
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@jwmodell
Joshua Modell
9 months
RT @AudeBer: From bacteria to human immunity! . On our quest to idendify eukaryotic homologs of antiphage systems, we discovered a family o….
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@jwmodell
Joshua Modell
10 months
Cas proteins in disguise?? Halloween came early this year! 🎃🥸.
@alexjmeeske
alex meeske
10 months
The final version of our paper on anti-CRISPRs "in disguise" as Cas proteins is out today in Nature! Congrats to Mark, Edith and the whole team!
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@jwmodell
Joshua Modell
1 year
RT @SternbergLab: We're excited to see our recent work on multi-functional transposons now in press. Nucleases and guide RNAs and catalytic….
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@jwmodell
Joshua Modell
1 year
RT @NilsBirkholz: 👋🏻 I'm absolutely glee-ridden to finally see our study on the RNA- and DNA-binding anti-CRISPR repressor Aca2 published i….
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@jwmodell
Joshua Modell
1 year
RT @dbikard: 1/ 🧵 Thrilled to share work of @EligoBio just published in @Nature ! We show proof of principle results of efficient base edit….
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@jwmodell
Joshua Modell
1 year
Marie’s paper is out! We previously showed that Cas9 represses its own promoter to avoid autoimmunity. Marie now shows that this repression generates a mutant subpopulation of CRISPR-Cas overexpressors that expand and contract in response to phage pressure.
@NatureMicrobiol
Nature Microbiology
1 year
OUT NOW 👉 A dynamic subpopulation of CRISPR–Cas overexpressers allows Streptococcus pyogenes to rapidly respond to phage @marie_stoltzfus @jwmodell.
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@jwmodell
Joshua Modell
1 year
RT @APHage_: If you've induced phages, you may have wondered if you can do the 'opposite' - block entry into lysogeny. You can, using prote….
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@jwmodell
Joshua Modell
1 year
RT @stephentang23: I am delighted to share the newest work from the @SternbergLab, in which we discover RNA-templated gene creation as a me….
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@jwmodell
Joshua Modell
1 year
RT @RegotLab: Connor's paper is out in Science! Thanks to all the present and former lab members for making this possible. If you are inter….
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@jwmodell
Joshua Modell
1 year
RT @jrpenades: Led by @jakob_tr and @quiles_nuria, with @lasa_lab, we show that prophages utilise noncontiguous operons to balance immuni….
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@jwmodell
Joshua Modell
1 year
Really beautiful work describing the gatekeepers of phage nuclei!.
@joeBondyDenomy
Joe Bondy-Denomy
1 year
New preprint from the lab, led by outstanding student Claire Kokontis! (@CKokontis) In this work Claire et al. discover Imp1-Imp6, phage proteins required for the selective import of proteins into the jumbo phage nucleus! Imp1 (below) is the special one.
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@jwmodell
Joshua Modell
1 year
RT @joeBondyDenomy: The phiKZ jumbo phages build a protein based nucleus to protect their DNA(!), but what do they do before the nucleus is….
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@jwmodell
Joshua Modell
1 year
RT @mike_tilapia: Our paper on functional discovery of protein degradation and stabilization effectors with proteome-scale induced proximit….
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@jwmodell
Joshua Modell
1 year
RT @RockLabTB: Ever wonder why drug-resistant Mycobacterium tuberculosis is less fit than drug-susceptible Mtb? And how the bacterium can e….
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@jwmodell
Joshua Modell
1 year
Check out Marie's first first-author manuscript! .@marie_stoltzfus.
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@jwmodell
Joshua Modell
1 year
Overexpressers are better at making new memories and using old ones, and they have larger functional arrays than WT cells which are surprisingly forgetful! In the absence of phage, overexpressers fade into the night, but Cas9-dependent mutagenesis continuously regenerates them!.
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@jwmodell
Joshua Modell
1 year
CRISPR-Cas systems are often repressed in nature. This likely helps bacteria avoid autoimmunity, but what do you do when a phage shows up? We show that a mutant subpopulation of S. pyogenes overexpresses Cas9 and these superpowered cells may do the real CRISPRin’.
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