Hi all, This probably have already be discussed, but can't find trace of it : Is there any reason I am not aware of that refinement software (thinking of both phenix and refmac) do not output CC work / free ? We all accepted CC 1/2 for resolution cut (whether it's 30 or 10 %) which tend to lead to high Rfree ( last shells having very poor phases), at least high overall R free in regard to the majority same resolution structures as they been refined with I/sig > 3. Which in return push people to cut resolution AFTER refinement which obviously drastically decrease the R free and catapult your structure from worst of the PDB to best of the PDB. It should never be done but it is nonetheless. How to blame a "non expert" to do that when changing the resolution from 1.49 to 1.5 change your Rfree by 2% (yes it exaggerated but you get the idea). Now it seems to me -but I may be very wrong as I am far from expert in the arcane math of these- that CC work and free would be more agnostic to this resolution cut off problem, as we compare it to the CC* value anyway ? thought it will never start to be used if refinement software don't output it as a standard (not talking about completely replacing Rfree here as it is obviously useful). Would CC work/free be a bad appreciation of the refinement process ?
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