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Hello Syed--

> 
> I am calculating structure with NOE-derived distance restraints and NH RDCs.
> After calculating the structure when I compare the calculated RDCs and
> experimental RDCs there is consistent violation of around 1 Hz in few
> residues present in B-strand. Is there way to put stronger force for RDC
> restraints in XPLOR so that structure come out according to experimental RDCs
> regardless if it gives more NOE or dihed  (talos) violations. This is just a
> basic question, I would appreciate your response in this regard.
> 

you can always increase the RDC force constant. In
eginput/gb1_rdc/refine.py this can be achieved by changing the
RampedParams line to something like:
rampedParams.append( MultRamp(0.05,20.0, "rdcs.setScale( VALUE )") )

best regards--
Charles
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