@Mejohnson81 profile picture
Margaret Johnson @Mejohnson81

Associate Professor of Biophysics at Johns Hopkins, theory and computational modeling in cell biology.

Joined April 2018
  • Tweets 166
  • Following 153
  • Followers 369
1 Photos and videos
Margaret Johnson retweeted
allen institute@AllenInstitute
17 Sep 2025
Open science tools like Simularium help bring science to life. @mejohnson81 shares how it has helped her stoke curiosity in @JohnsHopkins students and work with colleagues across timezones. #OpenScienceWeek
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Margaret Johnson retweeted
Xinyu Feng@xashleefeng
5 Aug 2025
My PhD work is online! Huge thanks to my advisors Carl and TJ, and collaborators! @taekjip @maryamyamadi @FuYiben @Mejohnson81
Taekjip Ha@taekjip
5 Aug 2025
GAGA zinc finger transcription factor searches chromatin by 1D–3D facilitated diffusion nature.com/articles/s41594-0…
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Does protein dimerization always help targeting and dwell time on DNA? Not for a population! Spacing between DNA targets has big impact. Nonspecific binding and facilitated (1D) diffusion play a key role. Super proud of Mankun Sang’s work! doi.org/10.1101/2025.02.18.6…
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Can sensing of membrane receptors be switched on at tunable threshold densities, without active processing? Proud to share this preprint led by the awesome Dr Foley, please check it out!
Sam Foley@PhysFoley
26 May 2025
I’m excited to finally share our new preprint! Membrane-associated assembly processes like CME function as precisely-tunable, spatially targetable, robust on/off switches that don’t require energy at decision-time. #biophysics arxiv.org/abs/2505.17290
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Margaret Johnson retweeted
Karen Fleming@KarenFlemingPhD
9 Aug 2024
I am thrilled to have the opportunity to serve the @BiophysicalSoc in this role. The society has been so important and impactful for me and my #science over the arc of my career, and I am delighted to give back.
Biophysical Society@BiophysicalSoc
9 Aug 2024
Replying to @BiophysicalSoc
@KarenFlemingPhD will serve as President-elect @sp_harris1 was elected to a second term as Treasurer 2025-2028 Council Members will be @doctheagrif @CavagneroLab @renaemryan1 @ryotaiino
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Margaret Johnson retweeted
Brian Camley@diffusiveblob
9 Aug 2024
Congratulations to @KarenFlemingPhD of JHU Biohysics, president-elect of the Biophysical Society! Very exciting!!
Biophysical Society@BiophysicalSoc
9 Aug 2024
Replying to @BiophysicalSoc
@KarenFlemingPhD will serve as President-elect @sp_harris1 was elected to a second term as Treasurer 2025-2028 Council Members will be @doctheagrif @CavagneroLab @renaemryan1 @ryotaiino
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Margaret Johnson retweeted
Rommie Amaro@RommieAmaro
11 Jul 2024
Please nominate one of your amazing junior or mid career colleagues for the @BiophysicalSoc Theory & Computation Subgroup Award They'll receive a cash prize & speak at the 2025 annual meeting in sunny Los Angeles☀️🌴 biophysics.org/awards-fundin… Nominations due Aug 1, 2024 ⏰
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The Theory and Comp subgroup from Biophysical Society has an early and a mid-career award, apply before August 1! please RT biophysics.org/awards-fundin…
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Margaret Johnson retweeted
Fred Meunier@MeunierLab
16 May 2024
Very excited to share our Jeff (Anmin) PhD paper in collaboration with @Mejohnson81 and Phil Robinson demonstrating that Dynamin 1 undergo Dimensional Reduction: (1) recruitment to the membrane and (2) clustering, to make endocytosis happen. nature.com/articles/s41467-0…

Dynamin1 long- and short-tail isoforms exploit distinct recruitment and spatial patterns to form...

Nature Communications - Dynamins are required at nascent endosomes to promote membrane fission. Here, the authors use super-resolution microscopy to show that dynamin-1 recruitment relies on...

nature.com
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Excited to share our latest paper: no matter how stable the macromolecular assembly, kinetic traps can always be avoided by exploiting nonequilibrium protocols. awesome effort by Adip Jhaveri and former undergrads Spencer and Yian! pnas.org/doi/10.1073/pnas.24…

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Having diverse subunits in the complex helps expand the solution space. Automatic differentiation is a super cool method for optimization in large parameter spaces, thanks Spencer!
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Alternate paper title: "Unsupervised machine learning discovers optimal pathways of self-assembly" @murugan_chicago
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Margaret Johnson retweeted
Dr. Samer Hattar@SamerHattar
2 Apr 2024
Read this to help you submit your grant. Elements of successful NIH grant applications | PNAS pnas.org/doi/10.1073/pnas.23…

Elements of successful NIH grant applications | PNAS

Is there a formula for a competitive NIH grant application? The Serenity Prayer may provide one: "Grant me the serenity to accept the things I cann...

pnas.org
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Margaret Johnson retweeted
Brian Camley@diffusiveblob
9 Nov 2023
Want to work on biological physics at Johns Hopkins? (OK, or other areas of physics which I accept are also interesting). We have a prize postdoctoral fellowship, with competitive pay, some independent research budget - Dec. 1 deadline academicjobsonline.org/ajo/j…
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Margaret Johnson retweeted
Karen Fleming@KarenFlemingPhD
5 Oct 2023
Our faculty search is still open for 10 more days. Come join our biophysics department. biophysics.jhu.edu/about/job…

Job Opportunities | Biophysics

Employment opportunities in the T.C. Jenkins Department of Biophysics. Expanding Biophysics at Johns Hopkins As part of a strategic investment for transformative expansion of Biophysics at Johns...

biophysics.jhu.edu
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Margaret Johnson retweeted
Taekjip Ha@taekjip
17 Sep 2023
The 2024 Biophysical Society meeting will be in Philadelphia. The abstract deadline is just about two weeks away. We have the BPS Lecture by @CarolynBertozzi and an exciting program by @TheVillaLab and Ibrahim Cisse. And the dance is back!
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Excited to share our preprint where we 'discover' kinetic protocols for macromolecular self-assembly of highly stable complexes biorxiv.org/content/10.1101/… Awesome grad student Adip Jhaveri and former undergrad Spencer Loggia, automatic differentiation is a cool method!

Discovering optimal kinetic pathways for self-assembly using automatic differentiation

During self-assembly of macromolecules ranging from ribosomes to viral capsids, the formation of long-lived intermediates or kinetic traps can dramatically reduce yield of the functional products....

biorxiv.org
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Johns Hopkins Biophysics is hiring tenure-track faculty as part of a faculty expansion at JHU! All ranks, all areas molecular to cellular, theory, comp. and experiment.
Brian Camley@diffusiveblob
29 Aug 2023
One of my departments is hiring - Hopkins is a great place to work, and I'm happy to answer questions: biophysics.jhu.edu/2023/08/2…
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Margaret Johnson retweeted
Stephen Fried JHU@fried_lab
9 Aug 2023
Can we teach bacteria to autonomously synthesize and assemble biomaterials? @Qi_Xieqi and coworkers thing so! Excited to share our work on secretion-catalyzed assembly, out now in @angew_chem. Bacillus's translocon can act like a nano silk spinneret! onlinelibrary.wiley.com/doi/…

Secretion‐Catalyzed Assembly of Protein Biomaterials on a Bacterial Membrane Surface

Bacillus subtilis can be programmed to autonomously assemble recombinant silk peptides on its own membrane, and then release them as fibers into the extracellular milieu. The process, called secret...

onlinelibrary.wiley.com
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Margaret Johnson retweeted
Cynthia Wolberger@CWolberger
10 Aug 2023
We are hiring in the Dept. of Biophysics & Biophysical Chemistry @BiophysicsJHMed at @HopkinsMedicine ! We invite applicants working in any related field including cryo-ET, cryo-EM, computational biology, single molecule Biophys. and more. Please RT! apply.interfolio.com/128991
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