Data Item _struct_mon_nucl.RSCC_sugar
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General 
- Item name
- _struct_mon_nucl.RSCC_sugar
- Category name
- struct_mon_nucl
- Attribute name
- RSCC_sugar
- Required in PDB entries
- no
- Used in current PDB entries
- No
Item Description
The real-space (linear) correlation coefficient RSCC, as
described by Jones et al. (1991), evaluated over all atoms in the
sugar moiety of the nucleic acid monomer.
sum|pobs - <pobs>| * sum|pcalc - <pcalc>|
RSCC = -------------------------------------------------
[ sum|pobs - <pobs> |2
* sum|pcalc - <pcalc>|2 ]1/2
pobs = the density in an 'experimental' map
pcalc = the density in a 'calculated' map
sum is taken over the specified grid points
Details of how these maps were calculated should be given
in _struct_mon_details.RSCC. < > indicates an average and the
sums are taken over all map grid points near the relevant atoms.
The radius for including grid points in the calculation should
also be given in _struct_mon_details.RSCC.
Ref: Jones, T. A., Zou, J.-Y., Cowan, S. W. & Kjeldgaard, M.
(1991). Acta Cryst. A47, 110-119.
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]+)?