RosettaCommons / RosettaCommons/rosetta

rna_cluster issue: Structures within same cluster have RMSD higher than cutoff

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Dominant language
C++
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Description

Hi,

I am using rna_cluster to cluster top 1% of structures after FARFAR2 run.

rna_cluster.mpi.linuxgccrelease -in:file:silent ../simple_cycle.out -out:file:silent clustered.out -nstruct 2000 -cluster:radius 5

After that structures from same cluster (confirmed with nclust id) were extracted from clustered.out with extract_pdbs command. However, their RMSD is higher than 5 Angstrom (~15 Angstrom).

This was confirmed with Pymol, Gromac's gmx rms command as well.

Is this bug or Is something missing in rna_cluster command line?

Best,
Mandar

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the rna_cluster command with the supplied silent file and comparing the resulting same-cluster structures using the reported RMSD tools. Read the rna_cluster and extract_pdbs documentation and relevant entry points to determine whether the cluster radius uses a different RMSD definition or requires another option. Done means identifying the cause of the discrepancy and documenting or correcting the behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
Domain
bioinformatics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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