Shankar Prasad Kanaujia wrote:
Dear justin,
sorry for writing person mail.
I am attaching the .mdp file.


You are using a shift potential for vdwtype (and you haven't applied it correctly - read the manual.) Therefore, LJ terms are cut off at rvdw (the LJ term is zero beyond this point) and you are not seeing a long-range LJ term. Using PME for coulombtype means that the "long range" component of the electrostatic nonbonded energy is in Coul.-recip.

-Justin

thanking you.
--
Yours Sincerely,
Shankar Prasad Kanaujia
Research Student
C/O - Dr. K. Sekar
Bioinformatics Centre, SERC
Indian Institute of Science, Bangalore-12
Phone - 9480258032
Office - 080-2293-3059



On Sat, May 30, 2009 at 9:00 AM, Justin A. Lemkul <[email protected] <mailto:[email protected]>> wrote:


    Please keep all correspondence on the gmx-users list.  I do not
    advertise myself as a private tutor :)


    Shankar Prasad Kanaujia wrote:

        Dear Justin,
        I have done simulation of protein-ligand complex using gromacs
        v3.3.3.
        The g_energy gives LJ-14, Coulomb-14, LJ-SR, Coulomb-SR energies,
        however, it does not give LJ-LR and Coulomb-LR energy.

        what could be the reason ?


    It would be useful if you posted your .mdp file.  Without it, I can
    only guess why the LJ-LR term is missing.  There is no such term
    Coulomb-LR.

    -Justin



        thanking you.
-- Yours Sincerely,
        Shankar Prasad Kanaujia
        Research Student
        C/O - Dr. K. Sekar
        Bioinformatics Centre, SERC
        Indian Institute of Science, Bangalore-12
        Phone - 9480258032
        Office - 080-2293-3059


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

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

    ========================================






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

Justin A. Lemkul
Ph.D. Candidate
ICTAS Doctoral Scholar
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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