6CYANA: couplings make - CYANA command

Parameters: first=<string>                 (required)
            second=<string>                (required)
            value=<real>                   (default: 1.0)
            tolerance=<real>               (default: 1.0)
            weight=<real>                  (default: 1.0)
            karpluscurve=<string>          (default: <blank>)

Add new scalar coupling constant restraints. Scalar coupling constant
restraints are added between atoms selected by the 'first' and 'second'
atom selections, respectively. The scalar coupling constant value,
its tolerance, relative weight, and Karplus curve parameters are set
as given by the 'value', 'tolerance', 'weight', and 'karpluscurve'
parameters.

The command can also be used to simulate scalar coupling constant
restraints on the basis of a given structure: If the 'value' parameter
is not given, then the scalar coupling constant value of the new
restraints will be to the average value obtained from the selected
conformers using the given Karplus curve.

Karplus curves must be specified in the form A+B*cos(d)+C*cos(d)**2,
where A, B and C are real numbers, and d denotes the value of the
torsion angle formed by the two scalar coupled atoms.
