Lucien Weiss

@weisslab.bsky.social

Assoc. Prof @polymtl @transmedtech Cell biophysics, superres microscopy, & curious-methods enthusiast. We have open positions www.WeissLab.ca

ICYMI: a quick calculation of transmembrane domain-containing proteins in a proteome. If you need to use this info: the code is in the post, or you can cite it since all quantixed posts have their own DOI courtesy of Rogue Scholar. doi.org/10.59350/0ah...

My Domain: proteome-wide scanning of TMDs – quantixed

doi.org

Stephen Royle@steveroyle.bsky.social · 4mo ago

How many proteins in the human proteome have transmembrane domains? And of those, how many examples with n TMDs are there? Couldn't find an answer, so I calculated it from Uniprot data with some #RStats magic (and I did some model organisms while I was at it). 🧪 quantixed.org/2026/04/16/m...

About one quarter of the 20659 proteins in the human proteome have TMDs. Most have 1 TMD, there's about 1000 with 7 TMDs. Details are in the post, which is linked.

DNA-PAINT with photocaged DNA labels = PhotoPAINT🔬. Why? No need for washing or mixing 👉🏻 higher accuracy in DNA-PAINT & other super-res methods. Fantastic collab with Alex Heckel & driven by the 'magic team' Nina Kaltenschnee and Marina Dietz 💪 doi.org/10.1002/anie... @goetheuni.bsky.social

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Heilemann Lab@heilemannlab.bsky.social · 6mo ago

🔬we have been playing with 'an old tool from (DNA) chemistry' 🧪 and used that for DNA-based confocal/super-res microscopy ... these are the last recordings for the revision and were recorded last night ... 🙏 thanks to R1 for this suggestion:

New paper alert! Authors introduce 𝗚𝟱𝗠, 𝗮 𝗗𝗡𝗔-𝗣𝗔𝗜𝗡𝗧-𝗼𝗽𝘁𝗶𝗺𝗶𝘇𝗲𝗱 𝗚𝗮𝘂𝘀𝘀𝗶𝗮𝗻 𝗠𝗶𝘅𝘁𝘂𝗿𝗲 𝗠𝗼𝗱𝗲𝗹𝗶𝗻𝗴 𝗮𝗹𝗴𝗼𝗿𝗶𝘁𝗵𝗺 that accurately determines true molecular position, even at the 𝗥𝗮𝘆𝗹𝗲𝗶𝗴𝗵 𝗹𝗶𝗺𝗶𝘁, and 𝗶𝗺𝗽𝗿𝗼𝘃𝗲𝘀 𝗲𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗿𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝗯𝘆 ~𝟳𝟬%. Huge congratulations to all authors! www.nature.com/articles/s41...

Molecular mapping in DNA-PAINT via modified Gaussian Mixture Modeling - Nature Communications

Standard algorithms fail to fully exploit the spatial information in DNA-PAINT. Here, the authors present G5M, an algorithm providing molecular maps by accurately inferring biomolecule positions at di...

nature.com

We are happy to share our latest work, 4Pi-SIMFLUX, which combines structured illumination with interferometric detection to achieve near-isotropic 3D localization precision of 2–3 nm and resolve sub-10 nm structural features across whole mammalian cells. www.nature.com/articles/s41... rdcu.be/eQVxt

4Pi-SIMFLUX: 4Pi single-molecule localization microscopy with structured illumination - Nature Methods

4Pi-SIMFLUX is a single-molecule localization microscopy approach that achieves a near-isotropic resolution below 10 nm in whole mammalian cells.

nature.com

Our new paper is published in the Journal of Chemical Biology! 🏮 We share StayRose, a red version of StayGold 🏮 StayRose has an unnatural amino acid-based chromophore, and has the same immense photobleach-resistance as StayGold 💡

StayRose: A photostable StayGold derivative redshifted by genetic code expansion

Photobleaching of fluorescent proteins often limits the acquisition of high-quality images in microscopy. StayGold, a novel dimeric GFP recently monomerized through sequence engineering, addresses thi...

jbc.org