Thu Dec 11 14:23:20 PST 2008
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  test simulating protein loops.


1)  script d1

    define ball joints btw every two residues.


2)  script d2

    define domains consisting of peptide and sidechain groups.

    use hinge joints.                                          


3)  script d3

    define domains consisting of peptide and sidechain groups.

    use multibody command.