loopmodel.build_ini_loop() -- create the initial conformation of the loop

build_ini_loop(atmsel)

This creates the initial conformation of the loop. By default all atoms are placed on a line between the loop termini, but you may want to use a different conformation, in which case you should redefine this routine. For example, if you want to leave the initial PDB file untouched, use a one-line 'pass' routine.