Hi Jianghai,

the defaults implemented for refinement using NCS are very close to those in CNS and works good in most of the cases. I will work on making it straightforward to use the variable weights, so one can use from loose to tight restraints.  This is in to-do list.

Currently you can use coordinate_sigma and b_factor_weight parameters (that are specified *outside* the restraint_group scope) to set this weights globally for all groups.

Pavel.


Jianghai Zhu wrote:
Hi,

I am wondering how the NCS weighting in phenix.refine works.  I guess the default values (coordinate_sigma = 0.05, b_factor_weight = 10) are pretty tight.  What kind values would be appropriate for medium and loose NCS?

Jianghai

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Jianghai Zhu, Ph.D
CBR Institute for Biomedical Research
Department of Pathology
Harvard Medical School
200 Longwood Ave., Boston, MA 02115
Ph: 617-278-3211
Fx: 618-278-3232
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