do not put a space between them. look at the ptraj output=- it will tell you
how many atoms are selected, which in this case should be 289 (if all
residues have a CA atom)
On Wed, Apr 28, 2010 at 5:22 PM, Yingjie Lin <linyj1984.gmail.com> wrote:
> Hi all,
>
> I am very new to Amber.
> I want to align my trajectory to a reference structure, and I'd like to
> mask for the alpha carbons in residues 1-289, should I say
> rms reference mass :1-289 .CA
>
> Will '.CA' overwrite ':1-289' ?
>
> Thanks!
>
> Yingjie
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>
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Received on Wed Apr 28 2010 - 14:30:06 PDT
