francesco oteri wrote:
The author of such work published partial charges, but nothing about other parameters.

In order to carry out any simulation, you need more than charges. If they did any subsequent validation of the charges, they must have assigned these parameters. If they calculated charges and did no validation, then you should question whether or not the charges are valid.

The force-fields used are gromos43A1 and CHARMM22. The GROMACS standard distribution contains nothing about iron sulphur cluster.


Nonstandard additions to force fields are not included in Gromacs distributions.

-Justin

Thank you


2011/10/6 Mark Abraham <[email protected] <mailto:[email protected]>>

    On 6/10/2011 11:24 PM, francesco oteri wrote:

        Dear gromacs users,

        I've to simulate a protein with an 4Fe-4S and a 3Fe-4S iron
        sulphur cluster.
        Lot of approaches are present in literature. There are a lot of
        papaers suggesting partial charges
        but very few suggestions regarding bonded and not bonded parameters.


    All such work should describe a source for such parameters, if they
    are not in the standard force field.


        So i am wondering if any member of this mailing list can send me
        a link, a file or something advice can be useful to
        obtain the topology of a protein with the iron sulphur clusters.
        It is worth noting that I am not interested in electronic
        properties so also advice using restraint are ok for me.


    The authors of such work would be a good place to ask.

    Mark
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--
Cordiali saluti, Dr.Oteri Francesco


--
========================================

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
MILES-IGERT Trainee
Department of Biochemistry
Virginia Tech
Blacksburg, VA
jalemkul[at]vt.edu | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin

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