[gmx-users] defining group

[Omer Markovitch]

Hello,
I would like to ask for your help in defining groups:
Say I have a protein. I would like to have two groups (1) the Calpha
backbone (2) everything else.
Later on, I will want to freeze the Calpha group.
How can I define these groups? Where?
I have looked in the manual, but I do not understand how to do it and in
which files.
Thank you, Omer Markovitch.

Koby Levy research group,
Weizmann Institute of Science.
http://www.weizmann.ac.il/sb/faculty_pages/Levy/
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