Amelie Stein

@amelierocks.bsky.social

Scientist. Mom. Coffee snob. Protein nerd.

Big congratulations to Aleksandra Panfilova who defended her PhD last week! Aleks has been teasing apart models of protein interactions and consequences of mutations on these, preprint coming soon! She’s now looking for new opportunities in Estonia, so reach out to hear if you’re hiring 😊

Bild

Looks like OpenFold3 has been formally released in a public "preview". Not quite on parity with AlphaFold3 on a few benchmarks shown, in particular for antibody interactions. All info on the github link. I am sure we will hear more about this from the developers github.com/aqlaboratory...

GitHub - aqlaboratory/openfold-3: OpenFold3: A fully open source biomolecular structure prediction model based on AlphaFold3

OpenFold3: A fully open source biomolecular structure prediction model based on AlphaFold3 - aqlaboratory/openfold-3

github.com

You can get MSAs directly from AlphaFold DB now (alphafold.ebi.ac.uk). I also missed the FoldSeek implementation, which lets you search for structurally similar proteins direktly. This saves some clicking around. Neat!

Bild
Maxim Tsenkov@mitsenkov.bsky.social · 10mo ago

The latest #AlphaFold DB update is out! We synchronised with UniProt release 2025_03, predicted protein isoforms across all species, and provide MSAs used to generate each prediction. Proud of the team at the PDBe for the hard work that went into this. Grateful to play my part in it!

Kindergarten teacher asks what I teach (biological sequence analyses), I try to explain. She turns to the 3yo and asks „What do you want to be when you grow up?“ Prompt and confident answer: „A butterfly 🦋!“

The proteasome-substrate-shuttle protein UBQLN2 contains—like other quality control system proteins—a long region devoid of lysine (a lysine desert) Martin Grønbæk-Thygesen (from @rhp-lab.bsky.social) et al show that introducing K here causes ubiquitylation and degradation doi.org/10.1101/2025...

Fig. 1 – UBQLN2 is a conserved lysine-depleted protein. (A) Sequence comparison of
UBQLN2 orthologs in the indicated species. Intrinsically disordered regions in human
UBQLN2 based on MobiDB are shown as a blue bar. The domain organization based on the
SMART database is marked. Lysine residues are marked as black squares. (B) ESM-2
predictions of all possible single amino acid substitutions of human UBQLN2 presented as a
heat map. The wild-type residues are marked in blue. ESM-2 scores close to zero (light
yellow colors) indicate that the amino acid substitution is compatible with the ESM-2
language model, whereas negative scores (dark orange colors) indicate that the variant is
incompatible with the ESM-2 model. The domain organization (based on SMART) is aligned
above the map. Note that substitutions to lysine or cysteine in general appear detrimental, in
particular downstream of the UBL domain. (C) The AlphaFold2 predicted structured of
human UBQLN2 (AF-Q9UHD9-F1) (left panel). The UBL domain is colored blue, and the
UBA domain is colored orange and the STI1 regions green. Zoom in on the UBL domain
(right panel) with the lysine residues highlighted as stick representations and colored based
on the relative accessible surface area (rASA, dark red exposed; grey, buried).
bioRxivpreprint@biorxivpreprint.bsky.social · 10mo ago

The importance of UBQLN2 ubiquitylation for its turnover and localization https://www.biorxiv.org/content/10.1101/2025.10.02.679934v1

For every Nobel that goes to a criminally under-recognized woman scientist (Brunkow, Karikó), or fails to go (Candy Lee), a week of mourning and reform for an academic system wherein you can do Nobel-prize-worthy-work and still end up without a conceivable path to being a professor.

Nature@nature.com · 10mo ago

BREAKING: The Nobel Prize in Physiology or Medicine has been awarded jointly to Mary E. Brunkow, Fred Ramsdell, and Shimon Sakaguchi "for their discoveries concerning peripheral immune tolerance" Stay tuned for more. #NobelPrize

A photo of a Nobel medal