colvar for canonical K-E salt bridge distance
&colvar ! Distance
  cv_type = 'DF_COM_DISTANCE'
  cv_ni = 12
  cv_i = 699,700,701,702,0,971,972,0,971,972,0,2552,2553,2554,2555,0
  anchor_strength = 2.0,2.0
  anchor_position = -10000.0,-5.8197,-5.8197,10000.0
/
colvar for activation loop torsion
&colvar ! Torsion
  cv_type = 'TORSION'
  cv_ni = 4,
  cv_i = 2470,2482,2502,2509,
  anchor_strength = 10.0,10.0
  anchor_position = -10000.0,1.49706,1.49706,10000.0
/