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STARTING WITH 50 STRUCTURES WITH RANDOMISED BACKBONE TORSION ANGLES ON BOTH THE RNA AND THE PROTEIN COMPONENTS, 31 STRUCTURES WERE FOUND TO HAVE CONVERGED. THE X-PLOR PROTOCOL START WITH A PERIOD OF SIMULATED ANNEALING WITH ONLY DISTANCE CONSTRAINTS (249 1 INCLUDING 123 INTERMOLECULAR) FOLLOWED BY A PERIOD OF REFINEMENT WHERE 110 DIHEDRAL CONSTRAINTS DERIVED FROM J COUPLING ANALYSIS AND PHOSPHORUS CHEMICAL SHIFT VALUE WERE ADDED (IN THE RNA ONLY). NO DIHEDRAL ANGLE VIOLATIONS AND AN AVERAGE OF 4 NOE VIOLA TIONS BETWEEN 0.2 - 0.5 A WERE FOUND IN THE 31 CONVERGED STRUCTURES. |
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