Updates from team
DH: ffbuilder
runs even if no params directory already present now
LD: could 2021 version work with this?
DH: could work, might be issues; if folks use different versions of schrodinger, get different ffs in the background
2021 just used OPLS4, nothing else really different
might consider changing the tag to include the OPLS version
DD: is there an easy way to get the OPLS version out of the tools? Can then have opls-<version>
and opls-<version>-custom
?
DH: short interactions with Bill, worked with Lorenzo on a tour of openff-benchmark
repo, next steps with analysis
LD: starting to deal with analysis that Xavier, Bill requested
got a tour of the existing analysis from DH, looking to make use of what we have to accommodate Xavier, Bill needs
trying out torsiondrive executor, put testing results on Confluence
testing classes of molecules known to be difficult for torsiondrives
https://openforcefield.atlassian.net/wiki/spaces/~954728248/pages/1518010447
N(amide)-C(arom) rotatable bonds set, known to be difficult case for many FFs
JW: interested in doing a working session at the end of this meeting if we can for identifying which torsion to drive
DH: might need to consider kekulization too?
JW: rotatable bond definition in RDKit:
Case in point on rotatable bonds being kinda dodgy:
from openff.toolkit.topology import Molecule
mol = Molecule.from_smiles('[O-]C=CC=CC=CC=CC=O', allow_undefined_stereo=True)
print(len(mol.find_rotatable_bonds()))
DD: will add driving of every rotatable bond to torsiondrive executor for further investigation of limitations
JW: reviewed and merged Josh’s PRs; cut the release on Friday 4/9
DD: worked with Jeff to cut the release, instructions out to partners for export and submission