PARALLEL AND ANTIPARALLEL (G.GC)2 TRIPLE HELIX FRAGMENTS IN A CRYSTAL STRUCTURE
DNA (5'-D(*GP*GP*CP*CP*AP*AP*TP*TP*GP*G)-3')
pH 6.00, VAPOR DIFFUSION, temperature 289.00K
BIOMOLECULE: 1 THIS ENTRY CONTAINS THE CRYSTALLOGRAPHIC ASYMMETRIC UNIT WHICH CONSISTS OF 2 CHAIN(S). SEE REMARK 350 FOR INFORMATION ON GENERATING THE BIOLOGICAL MOLECULE(S). TWO TYPES OF TRIPLEXES CAN BE GENERATED - PARALLEL TRIPLEX AND ANTIPARALLEL TRIPLEX. ONLY THE SYMMETRY OPERATIONS WHICH GENERATE THE PARALLEL TRIPLEX ARE SHOWN IN REMARK 350. THE PARALLEL TRIPLEX IS GENERATED BY APPLYING SYMMETRY OPERATION 1/2-X, 1-Y, 1/2+Z. THE ANTIPARALLEL TRIPLEX IS GENERATED BY APPLYING SYMMETRY OPERATION 1-X, 1/2+Y, 1/2-Z.
B-DNA, DOUBLE HELIX, INTERMOLECULAR BASE TRIPLET, OVERHANGING BASES, DNA