how would you model a 3-10 helix in cns?

Daniel Peisach peisach at
Tue Feb 13 10:18:10 EST 2001

Hi folks.

I'd like to make a model of a "perfect" 3-10 helix.  In other words,
that would be a helix that makes a complete 360 degree turn every three
residues.  I have been using an old copy of insight II, and it makes
helices which go about 330 degrees around every three residues.

Can anyone suggest how to come up with refinement parameters to twist
the helix I have to a full turn every three residues?


(peisach at

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