Example of structure determination of EIN using the implicit solvent force 
field EEFx

  Y. Tian, C.D. Schwieters, S.J. Opella, and F.M. Marassi,
  ``A Practical Implicit Solvent Potential for NMR Structure
   Calculation ,'' J. Magn. Res. 243, 54-64 (2014).

0) EEFx reference:

  % xpdf jMagnRes243_54_2014.pdf

1) Calculate structure from random coordinates

  % xplor -py fold.py

  (results are in precalc/fold*)

2) create files with suffix .best for 10 lowest energy structures


  % getBest -symlinks -num 10 fold_##.sa.stats 

  (results are in precalc/refine*)

3)  Refinement of ten best structures from the fold calculation

  % xplor -py -parallel refine.py && refine_0.sa

4) The resulting lowest 10 energy structures should have accuracy to the
   reference structures of less than 1.8 angstroms as determined by

  % targetRMSD -selection "name CA and resid 1:230" -diffSeq 1EZA.pdb \
          `getBest -num 10 precalc/refine_##.sa.stats `

