Romain Lacombe @rlacombe.bsky.social · 27/03/2025🔔🔔 New bioML paper alert! 🔔🔔 We evaluate evolutionary protein structure prediction models using the geometric structure of non-canonical crosslinks from a rare class of post-translationally modified peptides. A thread. 🧵 110 0
Romain Lacombe @rlacombe.bsky.social · 27/03/2025Evolution-based protein structure prediction models have revolutionized structural biology but struggle with rare post-translational modifications (PTMs). We evaluate them on sactipeptides, a rare class of 10 known peptides with unique sulfur-to-α-carbon thioether crosslinks. 100 0
Romain Lacombe @rlacombe.bsky.social · 27/03/2025These non-canonical crosslinks are challenging and underrepresented in structural datasets. Crucially, *only 5* of the 10 known sactipeptides have a resolved 3d conformation with a PDB entry. *But* their 2d crosslink structure is known, which constrains possible 3d geometries! 100 0
