![[CIF logo]](https://www.iucr.org/__data/assets/image/0003/125499/CIF_v2.5.jpg)
Protein Data Bank exchange dictionary (pdbx) version 1.0521
_pdbx_validate_symm_contact.site_symmetry_1
Name:'_pdbx_validate_symm_contact.site_symmetry_1'
Definition:
The symmetry of the first of the two atoms define the close contact. Symmetry defined in ORTEP style of 555 equal to unit cell with translations +-1 from 555 as 000
Type: line
Mandatory item: yes
Enumeration default: 1555
Category: pdbx_validate_symm_contact