Data Item _refine.pdbx_overall_SU_R_free_Blow_DPI

General

Item name
_refine.pdbx_overall_SU_R_free_Blow_DPI
Category name
refine
Attribute name
pdbx_overall_SU_R_free_Blow_DPI
Required in PDB entries
no
Used in current PDB entries
Yes, in about 3.1 % 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: Blow, D (2002) Acta Cryst. D58, 792-797

Additional Descriptive Information for Depositors

 Precision index (DPI) by Blow to estimate the precision of coordinates obtained by structural refinement of protein diffraction data.

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]+)?