I think the problem is that when you solve something by MR, then start refinement the R and Rfree will inevitably be equal. Usually they start ~ 50% and then R falls faster than Rfree in the expected manner. But in your case it is obv. a very good model, Rfree and R both start very low, so as expected the Rfreee will climb to a more or less realistic value ( > 30% I would expect without solvent etc.. ) This is not really a problem.

You could avoid this by adding noise to all your coordinates
(pdbset xyzin mr.pdb xyzout mr+noise.pdb
noise 0.4
end

(But Check! that is from memory! )

Then both R values will prob start ~ 40% and the FreeR will prob. behave as you expect..
But I would guess you would finish up with similar results..
Eleanor


Taiana Oliveira wrote:

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The data set is resolution 2.1

Taianá Maia de Oliveira
Laboratório de Moléculas Biologicamente Ativas - Biomol-lab
Departamento de Bioquímica e Biologia Molecular
Univesidade Federal do Ceará




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