Find PDB structures and Computed Structure Models (CSM) by combining queries from tools in this suite: Attribute Search, Sequence Similarity, Sequence Motif, 3D Similarity, and 3D Motif with 'AND' logic.
SOLUTION STRUCTURE OF A DNA DODECAMER CONTAINING THE ANTI-NEOPLASTIC AGENT ARABINOSYLCYTOSINE: COMBINED USE OF NMR, RESTRAINED MOLECULAR DYNAMICS AND FULL RELAXATION MATRIX REFINEMENT
SOLUTION NMR
NMR Refinement
Method
Details
Software
MATRIX RELAXATION, SIMULATED ANNEALING
STRUCTURES WERE GENERATED IN THE FOLLOWING MANNER: RESTRAINED MOLECULAR DYNAMICS WAS PERFORMED WITH EXPERIMENTAL DISTANCE AND DIHEDRAL RESTRAINTS GENERATED FROM NOESY AND COSY NMR DATA. THREE STRUCTURES WERE GENERATED STARTING FROM CANONICAL A-TYPE DNA AND THREE STRUCTURES STARTING FROM CANONICAL B-TYPE DNA. FOR BOTH CONTROL AND ARAC STRUCTURES, THE RMSD OF THE SIX STRUCTURES WAS < 0.7 ANGSTROM. THE SIX STRUCTURES WERE AVERAGED, MINIMIZED AND REFINED USING RELAXATION MATRIX REFINEMENT IN A DYNAMICAL SIMULATED ANNEALING PROTOCOL. THE X-PLOR DISTANCE CONSTRAINT AND SUGAR DIHEDRAL CONSTRAINT TABLES USED IN THE RESTRAINED MOLECULAR DYNAMICS CALCULATIONS FOR THE ARAC-CONTAINING DODECAMER ARE AVAILABLE FROM THE PROTEIN DATA BANK AS A SEPARATE ENTRY.