Data Item _atom_site.occupancy

General

Item name
_atom_site.occupancy
Category name
atom_site
Attribute name
occupancy
Required in PDB entries
no
Used in current PDB entries
Yes, in about 100.0 % of entries

Item Description

The fraction of the atom type present at this site. The sum of the occupancies of all the atom types at this site may not significantly exceed 1.0 unless it is a dummy site.

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]+)?
Default value
1.0

Aliases

Alias Item Name Dictionary Name Dictionary Version
_atom_site_occupancy cif_core.dic 2.0.1