Edward Wallace

Edward Wallace

@ewjwallace.bsky.social

Group leader, RNA and cellular adaptation in fungi. Carpentries data science instructor. Trying to make my corner of science a better place. Opinions my own. https://ewallace.github.io

2.2K followers685 following160 posts

Recently, @gladfelterlab.bsky.social said to me: "You may think you're done with condensates but condensates are not done with you." Amy, you are so right. @dadrummond.art has not yet been reached for comment.

Yeast Journal@yeast-journal.bsky.social

Boost your yeast transformation efficiency 🚀🚀🚀!!! In the latest Yeast review, Alistair Elfick & @ewjwallace.bsky.social discuss approaches that may enable superefficient transformation of S. cerevisiae, and accelerate genetic manipulation of non-model yeasts. onlinelibrary.wiley.com/doi/10.1002/...

No-one knows how yeast take up DNA in transformations. Really! (Ok, endocytosis is required.) We noticed that "yeast transformation mix" w/ Lithium salts, PEG, carrier DNA ... is exactly the mix that chemists use to make DNA phase separate. Our review paper in Yeast Journal! w/ Alistair Elfick 1/

Yeast Journal@yeast-journal.bsky.social

Boost your yeast transformation efficiency 🚀🚀🚀!!! In the latest Yeast review, Alistair Elfick & @ewjwallace.bsky.social discuss approaches that may enable superefficient transformation of S. cerevisiae, and accelerate genetic manipulation of non-model yeasts. onlinelibrary.wiley.com/doi/10.1002/...

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It was a pleasure digging into the literature, to find how much was known and how much not! Jean Beggs, my mentor and the first person to transform yeast with a plasmid, was lovely. R. Daniel Gietz was cool and encouraging. Read the papers by Kousaku Murata et al with fluorescent DNA! 4/

We hope you enjoy the read and learn half as much as we did. And we hope it really is DNA phase separation, or at least that by pointing out the gap in knowledge in a common lab technique we get to find out something cool. 5/5

No-one knows how yeast take up DNA in transformations. Really! (Ok, endocytosis is required.) We noticed that "yeast transformation mix" w/ Lithium salts, PEG, carrier DNA ... is exactly the mix that chemists use to make DNA phase separate. Our review paper in Yeast Journal! w/ Alistair Elfick 1/

Yeast Journal@yeast-journal.bsky.social

Boost your yeast transformation efficiency 🚀🚀🚀!!! In the latest Yeast review, Alistair Elfick & @ewjwallace.bsky.social discuss approaches that may enable superefficient transformation of S. cerevisiae, and accelerate genetic manipulation of non-model yeasts. onlinelibrary.wiley.com/doi/10.1002/...

Surely it has to be phase-separated DNA condensates that are taken up by yeasts? We're looking forward to finding out, writing grants and looking for collaborators to test the idea. Too cool an observation not to publish: DNA phase separation and yeast transformations occur in the same mixes. 2/

In addition to DNA phase separation, yeast transformation efficiency could be boosted by paying attention to yeast growth conditions, and by statistical design of experiments "DoE" for optimization. These approaches should tame non-model yeasts to make them tractable too. 3/

When I set up the #RNAbiology list on bluesky, I didn't expect that it would gift all the weird things people say about ribosomes. Public engagement with science I guess?

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Edward Wallace reposted

it made me really happy when i learned that the way mutation ultimately creates new proteins is that it just randomly activates or inactivates parts of dna that start coding and your cellular machinery is like guess we makin 🟡 now. does 🟡 do anything. idk. guess we'll find out if we die

Bunsen burners limitations in aseptic technique! Data-driven evidence here in a neat and careful study For what it's worth, the senior author Hannah Gavin is a lovely human who I used to occasionally play music with in Chicago.

Cameron Thrash@jcamthrash.bsky.social

As a component of aseptic technique, Bunsen burners do not universally decrease deposition of microbe-containing particles journals.asm.org/doi/full/10.... #jcampubs

The job will focus on developing a pan-fungal molecular bioimaging toolbox including fluorescent labelled fungal pathogen strains that can reveal previously hidden aspects of fungal biology. A good opportunity for an engineering biologist to move into medical mycology.

Edward Wallace reposted

Introns have a hidden regulatory role! 🧬🎉 Delighted to share our latest paper showing that inefficiently spliced introns and spliceosomal proteins direct RNA methylation, engaging RNAi to silence retrotransposons and regulate gene expression nature.com/articles/s41...

Edward Wallace reposted

Yes, I've done this. It's always a delight to work with SGD.

Saccharomyces Genome Database@yeastgenome.bsky.social

Reminder: Authors can submit data and information about publications! Point us to novel results, datasets (we appreciate GEO accession IDs!), or other important info using SGD’s simple “Submit Data” form: www.yeastgenome.org/submitData

Where are we at on acceptable abbreviations for fluorescent proteins? Like, GFP for green fluorescent protein sure, but is mNG for mNeonGreen too much? Etc? Your strongest opinions and arguments invited.

Edward Wallace reposted

I worked for UKRI for seven years and in my experience, the short timescales were 100% because of delays in central government. Usually because of delays in sign off by a minister; in the worst cases, due to number 10 comms teams insisting we hold back so the PM could announce it or whatever. 1/3

Kirsty Grainger @kirstygrainger.bsky.social

A new TOP FIVE has just dropped. The @ukri.org TOP FIVE shortest timescales from call opening to closing. And you won't believe the winner 👀

How do fungi grow directionally? We think part of the mechanism involves local translation of mRNA near the tip, especially of cell wall components. Delighted to share our preprint showing that an RNA-binding protein, SsdA/Ssd1, is trafficked to the tip of growing fungal filaments.

Domenico Modaffari@dmodaffari.bsky.social

Happy to share that the bulk of my PhD work is now on bioRxiv! We followed SsdA, the A. nidulans ortholog of yeast RNA-binding protein Ssd1, and found it forms motile mRNP puncta in hyphae. [1/7] www.biorxiv.org/content/10.6...

The work is a tour-de-force from the PhD of @dmodaffari.bsky.social, co-supervised with Edinburgh colleague Ken Sawin. Domenico set up Aspergillus nidulans in the lab, did beautiful hypothesis-driven imaging experiments, and generally learned everything from everyone then did it even better.

I am learning a lot from this debate about the last eukaryotic common ancestor. It's thought-provoking to have competing hypotheses and perspectives argued out there in the open. Here, the two arguments are internally consistent, yet different conclusions... so where's the wrong assumption?

Bungo Akiyoshi@bungoakiyoshi.bsky.social

I appreciate the comments by Max Raas, Eelco Tromer and others on my paper published last year "Hypothesis that ancestral eukaryotes sexually proliferated without kinetochores or mitosis". However, I do not think their critiques can reject my hypothesis. For details, please read the paper. 1/n

Edward Wallace reposted

Edward Wallace reposted

Wonderful talk by the legendary Jane Richardson today on validation of #cryoEM and #xray protein structures as part of the S2C2 modeling and validation workshop at SLAC. I continue to be amazed by how deeply she understands macromolecular geometry.

Edward Wallace reposted

Thrilled to announce our #preprint on a new factor in the last line of defense in #translation quality control out on #bioRXiv! Spearheaded by fantastic PhD student @kaushikiyer.bsky.social, supported by Chloé Walter, Alina Kraft, Max Müller and Lena Tittel.

bioRxivpreprint@biorxivpreprint.bsky.social

Jlp2 is an RQC complex-independent release factor acting on aberrant peptidyl-tRNA, protecting cells against translation elongation stress https://www.biorxiv.org/content/10.1101/2025.09.04.673968v1

Edward Wallace reposted

Pro tip for getting your data into SGD and other knowledgebases: don't hide the data in the supplemental info in PDF format. Put it in Excel with stable identifiers like SGDIDs and systematic_names (ex. YFL039C) in addition to gene names. #yeast #modelOrganism #getYourDataOutGetCited

Edward Wallace reposted

V happy with paperpile as a reference manager. Thanks @dadrummond.bsky.social for that recommentation.

Chris Wallace@chr1sw.bsky.social

What do people use for references in Google docs/word? Coming from latex where referencing was solid, have been stung a couple of times by Google docs/zotero losing or messing up which paper each reference number points to. This is too painful to go through again. What are the alternatives?

Edward Wallace reposted

I NEED to tell you the story of Tae Heung “William” Kim. He's a graduate student at Texas A&M where he's working on a vaccine for Lyme disease. He's a *legal permanent resident* of the United States. And he's been in ICE detention for 12 days & counting, transferred Tuesday to South Texas.

Edward Wallace reposted

It’s actually even worse: they show it as a gel, which is pure fluorescence units, but a BioAnalyzes records as the molecules pass a single point sensor and critically _fails to normalize for different molecule speeds_ This results in a near-logarithmic overcounting of large molecules!

Tami Lieberman@contaminatedsci.bsky.social

This is your regular reminder that the BioAnalyzer/TapeStation reports fluorescence units, not # of molecules. Left is bioA trace, and right is fragment size calculated from either read output (blue) or transformation of BioA trace (black). Fig 3 from journals.plos.org/plosone/arti...