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Hello Mensur--

> 
> Thanks for your suggestions. I tried anneal.py from the gb1_rdc
> directory and this converged to a solution, but the resulting
> stereochemistry was fairly shaky. In my hands, only distance geometry
> protocol, followed by simulated annealing, has produced decent results
> in terms of speed and good stereochemistry. 

Stereochemistry is specified by the improper energy term, and refinement
in torsion-angle space (like anneal.py) doesn't change these- it should
be correct in the starting structure, or fixed using a call to
protocol.fixupCovalentGeom(maxIters=100,useVDW=1)
after initializing coordinates.

>       Is there any particular
> script you recommend for the refinement of DGSA structures?

maybe gb1_rdc/refine.py

regards--
Charles
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