[AMBER] How to fix specific atoms? (not residue)

From: Myeong Lee <myeong.lee.nano.tu-dresden.de>
Date: Sat, 11 Jul 2009 12:46:06 +0100

Hi,

I want to hold the specific atoms (not the residues) during minimization
process. I don't know what's the keyword for giving restraint for
specific ATOMS. In other words, I want to fix only part of the atoms in
the same residue.

Another option in case I can't fix individual atoms is to hold the atoms
with atom type "CA". I tried the following, but didn't work. (These
are the atoms which do not belong to DNA/counterion/water)
 
 &cntrl
  imin = 1,
  maxcyc = 4,
  ncyc = 1,
  ntb = 1,
  ntr = 1,
  cut = 10.0
  ntwx = 100
  restraint_wt=500.0
  restraintmask='.CA'
END

Thanks.

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Received on Sat Jul 11 2009 - 10:08:00 PDT
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