[phenixbb] Wrong stereochemical restraint of Hyp

[YANG HAI]

Dear Phenix Developers,

I was refining a structure containing L-hydroproline (HYP) and it looks
like that the dictionary for HYP in Phenix has the wrong stereochemical
restraint. I modeled as L-hydroxylproline (trans) but the phenix.refine
always flipped the hydroxyl group and ended up as L-allo-hydroxylproline
(cis).

I created a .cif file and the issue is resolved, but it would be nice if
the restraint can be fixed in the next version of Phenix.

Thanks a lot
Yang Hai

Department of Chemistry,
University of Pennsylvnia
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