Data Item _pdbx_dcc_map.shift
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General 
- Item name
- _pdbx_dcc_map.shift
- Category name
- pdbx_dcc_map
- Attribute name
- shift
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
Defined in sfcheck (displacement/sigma_of_displacement).
Displacement of atoms from electron density is estimated from the
difference (Fobs - Fcal) map. The displacement vector is the ratio
of the gradient of difference density to the curvature. The amplitude
of the displacement vector is an indicator of the positional error.
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]+)?