RosettaCommons / RosettaCommons/foundry

Virtual atoms remain superimposed on C-alpha

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bug RFdiffusion3
Dominant language
Python
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Description

Hello,

I've noticed that in a fair amount of structures output by rfd3 (for motif scaffolding) there are residues where it looks like the virtual atoms didn't get removed, resulting in very badly-scoring files (cart_bonded ~ 10,000 REU). In these cases it looks like a glycine in pymol, but the .pdb file will list atoms CB onward as having the same xyz coordinates. Is there a way to cleanup virtual atoms/filter for residues where there are huge steric clashes from virtual atoms remaining on top of the C-alpha?

Thanks!

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Research direction

Start by reproducing the issue with structures output by rfd3 and inspect the .pdb files in PyMOL, focusing on residues whose CB and later atoms share the C-alpha coordinates. Determine where virtual atoms remain superimposed and verify that cleanup or filtering removes those residues and prevents the reported cart_bonded steric clashes.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
machine-learning
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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