Professor. Bacillus subtilis physiology and stress responses (metal homeostasis, redox stress, antibiotic resistance & cell envelope). EIC of Mol Microbiol.
Joined May 2014
- Tweets 1,331
- Following 775
- Followers 2,682
- Likes 2,389
21 Photos and videos
John D. Helmann retweeted
24 Nov 2024
Curious about organelle biogenesis in bacteria 🦠🔬Check out our review on bacterial organelles and their role in iron physiology @MolMicroEditors doi.org/10.1111/mmi.15330
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🥳A tuneable minimal cell membrane reveals that two lipid species suffice for life: nature.com/articles/s41467-0…. We chemically minimized the membrane of the Minimal Cell...they survived, but with some interesting shapes, like this 'Death Star' phenotype @Ijustice555 @JCVenterInst
🦠 Minimal Membranes for Minimal Cells 🦠! In our latest study, we introduce an approach to minimize and tune lipidome composition in mycoplasma and the Minimal Cell JCVI-Syn3A. tinyurl.com/53235uzt #Lipidtime @BCUBE_TUDresden
@JCVenterInst @Ijustice555 @James_Saenz
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John D. Helmann retweeted
4 Nov 2024
I am pleased to announce that our paper describing the role of NusG-dependent RNA polymerase pausing on the function of 5 riboswitches is now published in NAR.
academic.oup.com/nar/advance…
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John D. Helmann retweeted
8 Oct 2024
A new study in PNAS explores the connection between methionines and copper, with a focus on CueO. A collaboration between @lcb_officiel and @BIP8_Marseille 🍾🍾
Methionine-rich domains emerge as facilitators of copper recruitment in detoxification systems pubmed.ncbi.nlm.nih.gov/3937…
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John D. Helmann retweeted
25 Sep 2024
The evolution and functional significance of the programmed ribosomal frameshift in prfB biorxiv.org/cgi/content/shor… #biorxiv_micrbio
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John D. Helmann retweeted
17 Sep 2024
🧵 Exciting new findings on bacterial stress response regulation, driven by small proteins (≤50 amino acids). Big shoutout to the amazing team behind this work led by @vsangeev. Read the full study here: biorxiv.org/content/10.1101/…
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John D. Helmann retweeted
28 Aug 2024
Read the new story of @WarnekeRobert on coenzyme A biosynthesis in Bacillus subtilis and the identification of a novel metabolite, cysteinopantetheine!
Excellent collaboration with @c_elfmann @IFeussner and teams!
@mbiojournal @uniGoettingen #subtiwiki
journals.asm.org/doi/10.1128…
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Our new paper out in @PLOSPathogens today: dx.plos.org/10.1371/journal.… We find that resistance/tolerance to antimicrobial peptides is slightly more complex and dynamic than your "average" antibiotic resistance. Nice work by @AndyMurtha et al.!
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John D. Helmann retweeted
21 Aug 2024
New in JB: Kochanowsky, Vedantam et al. show that Clostridioides difficile deploys a superoxide reductase to resist the effects of oxygen.
journals.asm.org/doi/10.1128…
@ASMicrobiology @JBacteriology
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John D. Helmann retweeted
20 Aug 2024
We have a new paper out!
Deeply branching Bacillota species exhibit atypical Gram-negative staining | Microbiology Spectrum journals.asm.org/doi/10.1128…
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John D. Helmann retweeted
12 Aug 2024
Membrane depolarization kills dormant Bacillus subtilis cells by generating a lethal dose of ROS
@NatureComms from @HamoenLeendert
with @HenrikStrahl @KursadTurgay
nature.com/articles/s41467-0…
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John D. Helmann retweeted
10 Aug 2024
Very excited that this collaborative project is now published. This work was championed by Dr. Yu Tang @Tangyu0901 (Tongji University School of Medicine) and started during a visit to my lab. academic.oup.com/nar/article… 1/N
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John D. Helmann retweeted
11 Aug 2024
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John D. Helmann retweeted
9 Aug 2024
I’ve felt more than lucky to be able to tour around the US! Thanks to @JohnHelmann and his whole lab for being so welcoming and talking some great science (and not science!) with me this week 🧬👩🔬
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John D. Helmann retweeted
30 Jul 2024
Finally published! Check out the final version of our paper describing the discovery of methylolanthanin, a lanthanide metallophore secreted by methylotrophs! pnas.org/doi/epub/10.1073/pn…
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John D. Helmann retweeted
22 Jul 2024
The long-awaited structure of Bacillus MntR bound to DNA! While structures of iron-sensing DtxR family members bound to DNA have been known for decades, the DNA complexes of manganese sensors have long eluded structure elucidation. Cryo-EM to the rescue!
1 Jul 2024
Excited to see this detailed view of MntR-oligomerization that is key for Mn-activated transcription in B. subtilis!
Work led by Shivani Ahuja and Arthur Glasfeld.
Structural basis for transcription activation through cooperative recruitment of MntR biorxiv.org/content/10.1101/…
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John D. Helmann retweeted
6 Jul 2024
N-acetyl-transferases required for iron uptake and aminoglycoside resistance promote virulence lipid production in M. marinum biorxiv.org/cgi/content/shor… #biorxiv_micrbio
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John D. Helmann retweeted
6 Jul 2024
A huge step in understanding the biological role of flotillin and membrane microdomains. Led by our very own Marta Ukleja 🇵🇱🙌🙌🙌 with the help of @CavaLab_MIMS, @mateus_lab and (twitterless) Ana Eulalio :-). @CaixaResearch funding.
rdcu.be/dMWvC
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1 Jul 2024
Excited to see this detailed view of MntR-oligomerization that is key for Mn-activated transcription in B. subtilis!
Work led by Shivani Ahuja and Arthur Glasfeld.
Structural basis for transcription activation through cooperative recruitment of MntR biorxiv.org/content/10.1101/…
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John D. Helmann retweeted
27 Jun 2024
A family of DNA glycosylases in bacteria that repairs interstrand DNA crosslinks, protects against acid, and is involved in infection. New work from @DKunk and @YujuanCai in collaboration with @BFEichman @PNASNews pnas.org/doi/10.1073/pnas.24…
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