Hi Laurie,

as others suggested please try the same refinement using the latest version of Phenix. If that does not help please send me all inputs off list and I will investigate.

Pavel

On 3/18/22 13:11, Mark Saper wrote:

Laurie,

Really bizarre. The experts will have more info, I hope. When you model the Tyr in the posiive density, is the geometry satisfactory (including main-chain)? If so, then you might try turning off real space refinement and see what happens. Check the occupancies of the Tyr also.

-Mark

_____________________
Mark A. Saper, Ph.D.
Associate Professor Emeritus of Biological Chemistry
University of Michigan Medical School
[email protected] | +1 734 276 6505

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