On Mar 3, 2008, at 7:28, V. Tanchuk wrote:

Dear Users,
I am trying to minimize Drug – Enzyme Complex with some water molecules (4 of them near the binding site). I am trying to use Conjugate Gradfients, but I always get a message 'ERROR: can not do Conjugate Gradfients with constrains'. The mdp file is from the "GROMACS Tutorial for Drug – Enzyme Complex" and it does not have any constrains. I do not define POSRES or POSRES_WATER as well. It would be interesting to know where those constraints hide.

N.B. constraints and restraints are two different concepts in Gromacs. Refer to the manual for closer details.

Thank you in advance for your help.

Sincerely yours,
V. Tanchuk

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