Data Item _refine.ls_percent_reflns_R_free


Item name
Category name
Attribute name
Required in PDB entries
Used in current PDB entries
Yes, in about 76.2 % of entries

Item Description

The number of reflections that satisfy the resolution limits established by _refine.ls_d_res_high and _refine.ls_d_res_low and the observation limit established by _reflns.observed_criterion, and that were used as the test reflections (i.e. were excluded from the refinement) when the refinement included the calculation of a 'free' R factor, expressed as a percentage of the number of geometrically observable reflections that satisfy the resolution limits.

Additional Descriptive Information for Depositors

 The percent of reflections that satisfy both resolution limits and observation criterion, and that were pre-allocated as the cross-validation test reflections. These data were not used in the structure solution and refinement process and were used to calculate the 'free' R factor. In percentage to the overall reflections used for refinement.

Data Type

Data type code
Data type detail
float item types are the subset of numbers that are the floating numbers.
Primitive data type code
Regular expression

Advisory Boundary Conditions

Minimum Value Maximum Value
1 12