Re: [COOT] How does COOT determine protonation states

2024-02-27 Thread Paul Emsley
On 22/02/2024 01:06, Kim, Sun Kyung wrote: Hi Paul, Thank you for your response! I opened Coot from my terminal, and not seeing any diagnostic information, but it just opens up coot. There seems to be some confusion because I read this and think "that cannot be." Are you reading what is

Re: [COOT] How does COOT determine protonation states

2024-02-21 Thread Kim, Sun Kyung
Hi Paul, Thank you for your response! I opened Coot from my terminal, and not seeing any diagnostic information, but it just opens up coot. When you mention I could try setting COOT_MONOMER_LIB_DIR or REFMAC_MONOMER_LIB_DIR to the directory that containers the monomers… I’m not sure as to

Re: [COOT] How does COOT determine protonation states

2024-02-21 Thread Paul Emsley
On 21/02/2024 02:50, Kim, Sun Kyung wrote: Thank you Paul for that information. I will look into Acedrg and Grade2! Sounds good. I have an unrelated question… I’ve never encountered this before, but all of a sudden my COOT is complaining that it doesn’t have restraints for refinement…

Re: [COOT] How does COOT determine protonation states

2024-02-20 Thread Kim, Sun Kyung
Thank you Paul, for your reply! I was not able to locate the exact dictionary but I think I was searching probably in the right folder… what is the file type I should be looking for? More pressing questions for me are about REDUCE that’s used in COOT: 1. In COOT, does REDUCE take into

Re: [COOT] How does COOT determine protonation states

2024-02-20 Thread Paul Emsley
Hello Kate, Attached is an example conn file:  it is in a folder called coot-molprobity and has the required format for input to Reduce. > In COOT, does REDUCE take into account pH and local changes in pKa of atoms when determining protonation states? In SMILES-speak: NCC(=O)[OH] and

Re: [COOT] How does COOT determine protonation states

2024-02-15 Thread Paul Emsley
It is in the directory from which you started coot (that is, if coot can create and write to such a directory (if not it is in your home directory)). Paul. On 15/02/2024 23:51, Kim, Sun Kyung wrote: Thank you Lucrezia for your informative reply! You suggested I look into coot-molprobity

Re: [COOT] How does COOT determine protonation states

2024-02-15 Thread Kim, Sun Kyung
Thank you Lucrezia for your informative reply! You suggested I look into coot-molprobity output directory. Where can I locate this directory? Thank you. Best, ‘Kate’ Sun Kyung Kim From: Lucrezia Catapano Date: Friday, February 2, 2024 at 6:21 AM To: Kim, Sun Kyung , COOT@JISCMAIL.AC.UK

Re: [COOT] How does COOT determine protonation states

2024-02-04 Thread Bernhard Lohkamp
Dear Kate, Just to clear up some potential confusion and contradiction between Lucrezia's and my answer. Coot has various ways in generating hydrogens, internally using the dictionaries as Lucrezia nicely mentioned and explained, and externally using e.g. refmac or reduce (as I mentioned

Re: [COOT] How does COOT determine protonation states

2024-02-02 Thread Lucrezia Catapano
Dear Kate, Coot adds hydrogen atoms according to the dictionary. If you want to change the protonation of a ligand, you'd do that by modifying the actual monomer dictionary. We typically use Acedrg to generate dictionaries. For example, in the case of a ASP residue, the modification which

Re: [COOT] How does COOT determine protonation states

2024-02-02 Thread Bernhard Lohkamp
> Hello, > > > > I’m using the Coot 0.9.8.91 EL. I am working jointly with a computational > team who are doing simulations on our PDB model. I’ve added hydrogens to > my model using Coot’s Validate -> Probe clashes function. The computational > team asks, when COOT adds protons using the probe

[COOT] How does COOT determine protonation states

2024-01-29 Thread Kim, Sun Kyung
Hello, I’m using the Coot 0.9.8.91 EL. I am working jointly with a computational team who are doing simulations on our PDB model. I’ve added hydrogens to my model using Coot’s Validate -> Probe clashes function. The computational team asks, when COOT adds protons using the probe clashes