Data Item _pdbx_virtual_torsion.site_symmetry_4

General

Item name
_pdbx_virtual_torsion.site_symmetry_4
Category name
pdbx_virtual_torsion
Attribute name
site_symmetry_4
Required in PDB entries
yes
Used in currrent PDB entries
No

Item Description

The symmetry code of the fourth of the four atom sites that define the torsion angle specified by _pdbx_virtual_torsion.value.
 4
 7_645

Data Type

Data type code
symop
Data type detail
symop item types take the form n_klm, where n refers to the symmetry operation that is applied to the coordinates in the ATOM_SITE category identified by _atom_site_label. It must match a number given in _symmetry_equiv_pos_site_id. k, l, and m refer to the translations that are subsequently applied to the symmetry transformed coordinates to generate the atom used. These translations (x,y,z) are related to (k,l,m) by k = 5 + x l = 5 + y m = 5 + z By adding 5 to the translations, the use of negative numbers is avoided.
Primitive data type code
char
Regular expression
([1-9]|[1-9][0-9]|1[0-8][0-9]|19[0-2])(_[1-9][1-9][1-9])?
Default value
1_555
Internal data item
Yes

Aliases

Alias Item Name Dictionary Name Dictionary Version
_ndb_virtual_torsion.site_symmetry_4 cif_rcsb.dic 1.1