[Rdkit-discuss] comparing the valence after superimposition

2017-03-02 Thread Thomas Evangelidis
Hi, Just a quick question. I start from correct geometries (generated with ligprep) and I superpose many molecules on a reference ligand. The overlap is very good but sometimes the aromatic rings are not planar due to the restraints. How can I check automatically in batch mode that the atoms in th

Re: [Rdkit-discuss] difficulties with AllChem.EmbedMultipleConfs() on a macrocycle

2017-03-02 Thread Curt Fischer
Thanks for the notebook Sereina! Unfortunately when I run it I get different results. In your version, the very first call to EmbedMolecule() returns 0, which presumably means that embedding went OK. *## Embed the molecule without HsAllChem.EmbedMolecule(m, useExpTorsionAnglePrefs=True, useBa

[Rdkit-discuss] difficulties with AllChem.EmbedMultipleConfs() on a macrocycle

2017-03-02 Thread Curt Fischer
Hi all, I really like combination of rdkit and py3dmol and have been able to replicate e.g. Greg's notebook here: http://nbviewer.jupyter.org/github/greglandrum/rdkit_blog/blob/master/notebooks/Trying%20py3Dmol.ipynb But I can't seem to get AllChem.EmbedMultipleConfs() to generate any valid confo

Re: [Rdkit-discuss] PBF precision is to high to determine good planarity

2017-03-02 Thread Dimitri Maziuk
On 2017-03-02 04:37, Guillaume GODIN wrote: > Based on the precision of the coordinates (in rdkit sdf files it's 4 > digits) can we infer the precision on the PBF value based on that ? Only if you *know* the values are actually accurate to 4 digits and not e.g. were printed as "%.4f" just becaus

Re: [Rdkit-discuss] PBF precision is to high to determine good planarity

2017-03-02 Thread Greg Landrum
Guillaume, Which test are you actually doing? I would certainly always recommend adding some kind of tolerance value for anything involving floating point values. This helps protect you from both roundoff error and the precision of various file formats. -greg On Thu, Mar 2, 2017 at 11:37 AM, G