Data Item _refine.pdbx_overall_SU_R_free_Cruickshank_DPI

General

Item name
_refine.pdbx_overall_SU_R_free_Cruickshank_DPI
Category name
refine
Attribute name
pdbx_overall_SU_R_free_Cruickshank_DPI
Required in PDB entries
no
Used in current PDB entries
Yes, in about 1.5 % of entries

Item Description

The overall standard uncertainty (estimated standard deviation) of the displacement parameters based on the crystallographic R-free value, expressed in a formalism known as the dispersion precision indicator (DPI). Ref: Cruickshank, D. W. J. (1999). Acta Cryst. D55, 583-601.

Additional Descriptive Information for Depositors

               The overall standard uncertainty (estimated standard deviation)
               of the displacement parameters based on the crystallographic
               R-free value, expressed in a formalism known as the dispersion
               precision indicator (DPI).

               Ref: Cruickshank, D. W. J. (1999). Acta Cryst. D55, 583-601.

Data Type

Data type code
float
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
numb
Regular expression
-?(([0-9]+)[.]?|([0-9]*[.][0-9]+))([(][0-9]+[)])?([eE][+-]?[0-9]+)?