Re: [AMBER] Combining repeated MD trajectories

From: Nada Afiva <nadaafiva.gmail.com>
Date: Tue, 8 Sep 2020 17:42:05 +0700

Dear Clorice and Setyanto,
Thanks so much for your explanations, which make the discussion more clear.

Best regards,
Nadaafiva

Pada tanggal Sel, 8 Sep 2020 pukul 16.26 Clorice Reinhardt <
clorice.reinhardt.yale.edu> menulis:

> Hi Nada,
> You shouldn’t expect your trajectories to be continuous with respect to
> RMSD, if they are three independent trajectories. Unless you ran 1
> trajectory, and started the next trajectory from trajectory 1’s restart
> file, the atom positions are not going to be conserved and hence your plot
> will have jumps. You could average the RMSD together resulting from each,
> but usually people just report all three on the same graph. Unless you are
> going for a longer time scale event like folding, it’s often more efficient
> sampling of phrase space to run more trajectories of shorter length anyway.
> Clorice
>
> On Tue, Sep 8, 2020 at 2:46 AM Nada Afiva <nadaafiva.gmail.com> wrote:
>
> > Dear Rodrigo,
> >
> > Thanks so much for your help.
> >
> > However I have done the same procedure with the tutorial, and the RMSD
> plot
> >
> > is not what I want as
> >
> > I explained in the previous email.
> >
> > Thank you.
> >
> >
> >
> > Best wishes,
> >
> > Nadaafiva
> >
> >
> >
> >
> >
> > Pada tanggal Sel, 8 Sep 2020 pukul 09.52 Rodrigo Galindo-Murillo <
> >
> > rodrigogalindo.gmail.com> menulis:
> >
> >
> >
> > > Hello!
> >
> > > You can follow this tutorial:
> >
> > >
> >
> > >
> >
> > >
> >
> https://amberhub.chpc.utah.edu/combining-multiple-trajectory-files-into-a-single-trajectory-and-remove-water-molecules-to-save-space/
> >
> > >
> >
> > > to combine your trajectories.
> >
> > >
> >
> > > Best,
> >
> > > Rodrigo.
> >
> > >
> >
> > > On Mon, Sep 7, 2020 at 5:59 PM Nada Afiva <nadaafiva.gmail.com> wrote:
> >
> > > >
> >
> > > > Dear Amber,
> >
> > > > I run 100 ns MD and then I repeated it 2 times, so I have 3
> > trajectories
> >
> > > > for the same system.
> >
> > > > Now I want to combine the 3 trajectories into one single trajectory
> > and I
> >
> > > > will use the single combined trajectory
> >
> > > > to calculate the RMSD ad other analyses.
> >
> > > > Please let me know how to combine the 3 trajectories into one single
> >
> > > > trajectory.
> >
> > > > Thank you.
> >
> > > >
> >
> > > > Best regards,
> >
> > > > Nadaafiva
> >
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Received on Tue Sep 08 2020 - 04:00:03 PDT
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