I really dont think this is a very good idea - B values are correlated to the optimum position of the atom - if thast is a fraction of an A out the B factor will be much higher than it should be..

 Eleanor

Hailiang Zhang wrote:
Dear Pavel:

Thanks a lot! I will try phenix.refine!

Best Regards, Hailaing

  Hi Hailiang,

you didn't specify which program you are using...

For example, you can do it in phenix.refine:

phenix.refine model.pdb data.mtz strategy=individual_adp
adp.individual.iso="chain A and resseq 123"

which will refine isotropic ADPs for residue number 123 in chain A only,
or

phenix.refine model.pdb data.mtz strategy=individual_adp
adp.individual.aniso="chain A and resseq 123"

which will refine anisotropic ADPs for residue number 123 in chain A only.

You can do it in Shelxl too. Don't know about other programs.

Pavel.

On 8/15/10 10:35 AM, Hailiang Zhang wrote:
Hi there:

For a PDB with B values refined, if I modify/addto its local structure
(mutation, add 1 residue...), is there any way I can refine the B values
only for the modified/added structure while keeping already refined B
values unchanged?

Thanks!

Best Regards, Hailiang


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