[phenixbb] very weak reflections
Ralf W. Grosse-Kunstleve
rwgk at cci.lbl.gov
Fri Dec 11 09:45:00 PST 2009
> Thanks for the suggestion. My original question was that the phenix refines
> the isoalloxazine ring as a flat plane whereas refmac refines it bent. (Same
> cif file)
> And the density fits the shape produced by each program. I guess, I should
> tighten restraints in refmac and see if it can make the plane and look at
> the difference map.
Do you have planarity restraints or just dihedrals ("tor" in the cif file)?
If I understand correctly, in refmac only the dihedrals with
periodicity zero are actually restraint. You could verify this by
running the same refmac refinement with all non-zero periodicity dihedrals
commented out in the cif file.
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