> > Hi all, > I am using Modeller to model a structure in which there is a portion - not present in the template - that I want to force to be an alpha-helix. > If I introduce the secondray structure restraints in the entire corresponding region of sequence, I obtain a straightened helix. In the sequence, however, there is a Proline in correspondence of which I want to induce a little distortion of the helix. > If I force the secondary structure only before and after the proline, by excluding it, I obtain some very strange angles of an helix with respect to the other, that is a too pronounced bending. > Is there in Modeller a way to induce a "controlled" distortion (that in my case corresponds to control the angle between the CO and NH groups of the proline!)? > thanks > _________________________________________________________________ > Explore the seven wonders of the world > http://search.msn.com/results.aspx?q=7+wonders+world&mkt=en-US&form=...

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