Hello,
for metal ions (and especially transition metals) you should first
consider what kind of metal model you want to employ, as the different
models (bonded, soft sphere or dummy model) have have different properties.
There are numerous papers outlining the parametrization of those
different models, so you can search them once you have decided on how
you want to model the ion :)
If you are in need of modelling things such as unpaired electrons, spin
effects or anything else quantum mechanical, you should consider if MD
is the correct approach to simulate a structure like this or if a pure
QM description is more appropriate.
If you have a reference for a similar system you should follow the
approach outlined there as much as possible.
Also one note of caution, you should only use one force field to
simulate your system, and never mix and match force fields.
Cheers
Paul
On 16/05/18 11:57, dhaval patel wrote:
Dear All,
I need to simulation of protein-ligand with coordinated metal ion bound to
ligand. The metal ion is Mn+2, Advise me whether its correct to use
CHARMM36 and OPLSS force field for parameterization? What things should
taken care while simulating such cases where we have metals with unpaired
electrons? Any help is highly appreciated.
Sincerely yours,
Dhaval
--
Gromacs Users mailing list
* Please search the archive at
http://www.gromacs.org/Support/Mailing_Lists/GMX-Users_List before posting!
* Can't post? Read http://www.gromacs.org/Support/Mailing_Lists
* For (un)subscribe requests visit
https://maillist.sys.kth.se/mailman/listinfo/gromacs.org_gmx-users or send a
mail to gmx-users-requ...@gromacs.org.
