Hello All,

A general questions though phenix.refine is being used for refinement.  A 
student I am working with has a structure that was solved and initially refined 
using TLS and NCS parameters.  They were given the structure to gain some 
experience in refinement and they have been asking me some questions, I was not 
involved in the initial work.  While everything seems to be happy and the model 
is correct with good refinement statistics for the most part one thing that I 
am unsure of is some of the heavier atoms (Phosphate and Sulfer) have very high 
temperature factors when looking at individual residues or ligands.  The 
temperature factors are at least twice as high as the lighter atoms they are 
associated with.

I am at a loss to explain what is going on, I really have not used TLS 
refinement a lot so there is that.  Resolution is about 2.5 angstroms with good 
completeness.

Thoughts?

Thank You in advance
Len Thomas

Leonard Thomas, Ph.D.
Biomolecular Structure Core, Director
Oklahoma COBRE in Structural Biology
Price Family Foundation Institute of Structural Biology
University of Oklahoma
Department of Chemistry and Biochemistry
101 Stephenson Parkway
Norman, OK 73019-5251
Office: (405)325-1126
lmtho...@ou.edu<mailto:lmtho...@ou.edu>
http://www.ou.edu/structuralbiology/cobre-core-facilities/mcl


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