PDBx/mmCIF
Home
Dictionaries
Browse the PDBx/mmCIF Dictionaries
Current version (V5) PDBx/mmCIF
Development Version PDBx/mmCIF
Dictionary Definition Language V2
wwPDB Validation
Browse Other Dictionaries
IHMCIF
flrCIF
Previous PDBx/mmCIF V4
Original mmCIF
NMRIF/NMR-STAR
NMR Exchange Format (NEF)
SAS
NDB NTC
3DEM
Image mmCIF
Symmetry
Biosync
ModelCIF
Documentation
PDBx/mmCIF FAQ
PDBx/mmCIF User Guide
Format
Large Structures in PDBx/mmCIF
PDB to PDBx Format Correspondences
wwPDB PDBx/mmCIF Working Group
Software
Software resources
C++ Examples
Python Examples
Reference
File syntax
Dictionary organization
Atomic description
Molecular description
Reference List
Early history
Glossary
Downloads
Contact Us
Data Item
_pdbx_refine.free_R_val_test_set_size_perc_4sig_cutoff
Browse:
Dictionary
Category Groups
Data Categories
Data Items
Supporting Data
General
Item name
_pdbx_refine.free_R_val_test_set_size_perc_4sig_cutoff
Category name
pdbx_refine
Attribute name
free_R_val_test_set_size_perc_4sig_cutoff
Required in PDB entries
no
Used in current PDB entries
Yes, in about 0.7 % of entries
Item Description
Free R-value test set size (in percent, 4 sigma cutoff) Placeholder for PDB mapping of SHELXL refinement data.
Item Example
View/hide Example
1.29
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_val_test_set_size_perc_4sig_cutoff
cif_rcsb.dic
1.1