- Protein crystallography
Main steps: - Protein purification - Crystallisation
Special: - Programs for crystallography - X-ray detectors
Basic tutorials: - Chemistry - Protein - Peptide - Amino Acids
Xtal community: - CCP4BB
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Subject: Rfree going up From: kumar bputcha {- at -} UTK {- dot -} EDU Date: 2009-08-01
Dear members, I am refining a structure and I notice that when I delete loops that have none, or very little density, the Rfree (which is around 40% at 3.4A) goes up instead of going down. Much of the remainder of the molecule is in good density. Wondering how it works? Thank you. Kumar
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