Re: AMBER: restraintmask

From: Viktor Hornak <>
Date: Thu, 04 May 2006 14:41:37 -0400

Dear Joseph,

try using the following syntax:

restraintmask=':256 & !.H='

please check section 11.5 (ambmask utility) of Amber manual for more
details about the restraintmask syntax...


Joseph Fernandez wrote:

>I would like to restrain a residue using ntr.
>However, I would only like to restrain the heavy atoms
>(without the hydrogen atoms). WHen I use the
>following syntax:
>I get an error that ~ is an invalid symbol. When I
>use the following:
>I also get an error message that * is an invalid
>Any help on this matter would be greatly appreciated.
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Viktor Hornak
Center for Structural Biology   Phone: (631)632-1439
SUNY at Stony Brook             Fax:   (631)632-1555
Stony Brook, NY 11794-5115      E-mail:
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Received on Fri May 05 2006 - 08:13:56 PDT
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