| molecular dynamics |
TWO STARTING STRUCTURES WERE OBTAINED BY MANUALLY DOCKING MITHRAMYCIN ON A FORM AND B FORM DNA. THESE WERE SUBSEQUENTLY REFINED BY DISTANCE-RESTRAINED MOLECULAR DYNAMICS USING A SET OF INTER-PROTON DISTANCES DERIVED FROM NMR DATA (40, 80, 120, 160, 250 MS NOESY EXPERIMENTS) AND DELTA DIHEDRAL ANGLES DERIVED FROM SIMULATION OF COSY CROSS PEAK PATTERNS. THE EIGHT DISTANCE RESTRAINED STRUCTURES WERE OBTAINED BY TAKING THE AVERAGE COORDINATES OF THE LAST 2.0 PS OF THE DYNAMICS DURING DISTANCE RESTRAINED DYNAMICS AND MINIMIZED. THE RMS DEVIATIONS FROM IDEAL GEOMETRY FOR THE EIGHT FINAL STRUCTURES ARE: BOND (ANG): MDL1 MDL2 MDL3 MDL4 MDL5 MDL6 MDL7 MDL8 0.009 0.009 0.009 0.008 0.009 0.009 0.009 0.009 ANGLE (DEG): MDL1 MDL2 MDL3 MDL4 MDL5 MDL6 MDL7 MDL8 2.627 2.630 2.631 2.636 2.621 2.638 2.664 2.652 IMPROPER(DEG): MDL1 MDL2 MDL3 MDL4 MDL5 MDL6 MDL7 MDL8 0.866 0.850 0.808 0.874 0.841 0.803 0.881 0.808 |
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