Greg Harrison

FACULTY POSITION: We are seeking an Assistant Professor to join our growing and vibrant Department of Microbiology at Cornell! FOCUS: Using bacteria to address 21st century challenges. (part of a cohort hire in SynBio). *please repost* academicjobsonline.org/ajo/jobs/33098 #MicroSky

🚨 Attention, queer microbiologists!🚨 Today is the last day to submit your abstract to be considered for a talk at the 2026 Pride in Microbiology LGBTQ+ STEM Day Symposium! Link: forms.gle/VyXy4WXmr96B...

Apparently NIH shut down the RFI form early. Thank goodness for the @waybackmachine.bsky.social where we can clearly see the deadline was supposed to be 11:59pm. web.archive.org/web/20260821... @maxkozlov.bsky.social @aniloza.bsky.social @jocelynkaiser.bsky.social

Unreal

🏳️‍🌈 The deadline for abstract submissions is approaching! You can submit one at forms.gle/wysAbvWzF88t..., or simply register for the event as an audience member. See you then! 🏳️‍🌈

It's happening! NYUGSM Microbiology is hiring and I'd love to see more bacteriology here! Please repost and spread the word!

A little peek inside how seriously we take chemical structures at @cenmag.bsky.social. Last week at 5:30 AM we were literally losing sleep over it. Editorial with @fmorningstar.bsky.social, @bethanyhalford.bsky.social. and @laurahowes.bsky.social cen.acs.org/synthesis/st...

1/10 I am thrilled to announce my first first-author preprint, now live on bioRxiv! This focuses on my favorite little protein, GpsB, and its ties to fosfomycin resistance through phosphoregulation in S. aureus (a 🧵) www.biorxiv.org/content/10.6...

Cool story and a great thread!! The GpsB story just keeps getting cooler!

Funding opportunity!

Lovely work from Ellermeier group et al to solve the mystery of why the LDTs are essential in Cdif! Congrats to all involved! Carboxypeptidase activity drives L,D-transpeptidase essentiality during vegetative growth and sporulation in Clostridioides difficile | mBio journals.asm.org/doi/full/10....

Pls share:The Department of Microbiology at the University of Georgia invites applications for a tenure track Associate or Full professor position in Medical Mycology, beginning August 1, 2027. www.ugajobsearch.com/postings/508...

Beautifully made video overview! Definitely gonna check out the review, but highly recommend this video summary on the evolution of multicellularity 🤩

Please join us for our 2026 LGBTQIA+ STEM Day Symposium! Registration form: forms.gle/VyXy4WXmr96B...

The phenotypic landscape of the model firmicute Bacillus subtilis PNAS from Carol A. Gross www.pnas.org/doi/10.1073/...

🌱We are looking for an Assistant Professor in Plant Molecular Genetics @irbv.bsky.social If you are passionate about genetics, molecular biology, or imaging, this is your chance to join a community of researchers working on plant development, cell biology, evolution, ecology, and biodiversity. 👇

My department (Biology at Emory) is hiring for a teaching track position! These are stable, well-respected, long-term positions with a path to promotion and ppl often staying for decades. The dept is wonderfully supportive and filled with amazing humans (faculty + staff) apply.interfolio.com/191814

After President Donald Trump told attendees at the Republican midterm convention Thursday night that "we want honesty in our elections," he led them in a pledge to "cheat like hell" and "go out and vote" in the midterm elections. https://to.pbs.org/4yTjfzl

The US President's new proposal to tax international students has been approved by the White House for release this week. It's an unprecedented $100,000 tax on int'l grads who stay to work after graduation on Optional Practical Training (most grads do), a crucial bridge to remaining by any channel.

Excited to share new work from my lab showing that early-life colonization with C. difficile remodels the developing infant gut, published today in @science.org! This study was co-led by two truly amazing scientists: @haidermanzer.bsky.social and Alexa Semon. www.science.org/doi/10.1126/...

Is asymptomatic colonization with Clostridioides difficile (C. diff) early in life truly “silent?” In my first publication from the Zackular Lab, out today in @science.org, I teamed up with my amazing lab-mate, Alexa Semon, to find the answer. Link here: www.science.org/doi/10.1126/...

Flagellar toxicity: Flagellar synthesis is lytic for Bacillus subtilis in the absence of PBP1 PNAS from Dan Kearns lab www.pnas.org/doi/10.1073/... #MicroSky

Thrilled to share this insightful work of Asher King @subtisilly.bsky.social and Pilar Horigian @pilarhorigian.bsky.social! #ProudPI #MicroSky #AMR #SubtiWiki In this work, we reveal the *magic* behind the protective effects of magnesium in Bacillus subtilis. Read Asher's 🧵 below for more details.

I am so excited to share my first first-author manuscript regarding the mysterious effects of magnesium in Bacillus subtilis! 🧵⬇️ www.biorxiv.org/content/10.6... #MicroSky

NIH's Aug 2026 proposal would scrap exact scores and percentiles for three broad bins (top = top 25%). With funding rates at 5% or lower, too much then rides on administrative discretion. It devalues peer review and is a deterrent to engage. Tell NIH before Oct 13. grants.nih.gov/grants/guide...

I’m thrilled to share our newest study in which @thesbhowmick.bsky.social y.social developed and applied a genome-wide platform to uncover genetic interactions in Staphylococcus aureus and MRSA. www.biorxiv.org/content/10.6... 1/10

Excited to share my latest work in the @ramamurthilab.bsky.social, now in @cp-cellreports.bsky.social! We show that division geometry organizes surface adhesins in S. aureus and enables the formation of abscess communities that protect bacteria from immune cells. www.cell.com/cell-reports...

New story from @jocelynkaiser.bsky.social at Science on K award changes. www.science.org/content/arti... 1/13

You can post your comment here. The period is open until Oct 13. rfi.grants.nih.gov?s=6a2b1c22c3...

From the administration that likes to tout "transparency". Usually, the research team that writes the #NIH grant sees funding scores (percentiles, impact scores) from the reviewers. Now, this won't be available. Why? The only reason: political meddling. 🧪 grants.nih.gov/grants/guide...

New from the lab--C. diff uses phase variation to initiate infection in a virulent state but that phenotype presents a fitness cost as disease develops. A programmed reset mechanism primes Clostridioides difficile virulence at the onset of infection | Science Advances www.science.org/doi/10.1126/...

Pls share: Three open posions in Bacteriology at Wisconsin: bact.wisc.edu/bacteriology...

Congratulations @polakuhn.bsky.social on the fabulous work! Truly found the needle in the haystack regarding the SINGLE CamA methylation site (out of THOUSANDS) that regulates sporulation - and super surprising findings for sigma factor activation/commitment in Cdif sporulation (vs Bacillus) 🤩

Phenazine Pride #PrideMonth #bacterial_pigments Agar art by Marina Smiley

New preprint from the lab led by Alex Dobrila! We show that butyrate-dependent toxin release in C. difficile is mediated by a broadly-conserved endolysin (EndD), which is under the control of the sporulation sigma factor SigK. Excited to share this story! 👇 www.biorxiv.org/content/10.6...

“Who would benefit from the proposed [OMB] rules? For one, politically connected industries — including those that may want to obscure scientific links between their products and harmful health effects.” Good op-ed in @nytimes.com www.nytimes.com/2026/06/09/o...

Cultivating the Pride in Microbiology Network

tl,dr; Scientists no longer allowed to use federal funding to publish, attend meetings, or talk to the public. They cannot collaborate internationally. Grants can be cancelled for any reason, at any time, political appointees have a final say over what gets funded, and who gets funded.

🧪More information will be forthcoming about this *critical* development, and the Federal Register website will be open for public comments tomorrow. Thanks to @standupforscience.net for sounding the alarm. Background: an op-ed from @cdelawalla.bsky.social et al www.theguardian.com/commentisfre...

“Units of the NIH are privately directing grantees to request permission in advance for any co-authorship with a scholar affiliated with a foreign institution, even if all the work was done in the United States.” Grantees also told to remove papers with foreign authors from progress reports.

Nice piece that includes my colleague Kevan’s pioneering research. Yet another reason to fund more science, not less! How an ‘Impossible’ Idea Led to a Pancreatic Cancer Breakthrough www.nytimes.com/2026/05/12/h...

Fabulous work from @amelia-mckitterick.bsky.social using phages to better understand the bacterial cell envelope! #phagesky

The next International Conference on Gram-Positive Bacteria will take place between 29 June – 2 July 2027 in Ljubljana, Slovenia. #subtiwiki

The Bourgeois Lab is recruiting a postdoc to work on our DoD-funded human genetics project aimed at understanding Lyme disease outcomes. wpi.wd5.myworkdayjobs.com/WPI_External...