Data Item _pdbx_refine.free_R_factor_4sig_cutoff

General

Item name
_pdbx_refine.free_R_factor_4sig_cutoff
Category name
pdbx_refine
Attribute name
free_R_factor_4sig_cutoff
Required in PDB entries
no
Used in current PDB entries
Yes, in about 0.9 % of entries

Item Description

R free value (4 sigma cutoff). Placeholder for PDB mapping of SHELXL refinement data.

Item Example

 0.216

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]+)?

Aliases

Alias Item Name Dictionary Name Dictionary Version
_ndb_refine.free_R_factor_4sig_cutoff cif_rcsb.dic 1.1