Index

Protein Data Bank exchange dictionary (pdbx) version 1.0521

_refine.pdbx_real_space_R

Definition:

   
      Real space R factor of electron density for all atoms.

      The real space R factor is calculated by the equation

      R_real = [Sum~i (|Dobs - Dcal|)]/[Sum~i (|Dobs + Dcal|)]

      Where:
     Dobs is the observed  electron density,
     Dcal is the calculated  electron density,
          summation is for all the grid points

      Ref: Branden, C.I. & Jones, T.A. (1990).  Nature, 343, 687-689

Type: float

Mandatory item: no

Category: refine