title: Conformations of A-DNA and B-DNA in agreement with fiber X-ray and infrared dichroism.
abstract: Two right handed double helices are proposed as models for DNA fibers in respectively the A and the B form. The present conformations have geometrical parameters which agree very well with fiber X-ray and the orientation of their phosphate groups is in good accordance with infrared dichroïsm measurements. Dihedral angles and complete sets of atomic coordinates are given together with stereo-views and curves of the calculated diffracted intensities. Results are compared with experimental data and with preceding DNA models.
mesh_terms: D002942:Circular Dichroism; D004247:DNA; D008958:Models, Molecular; D009690:Nucleic Acid Conformation; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
chemical_list: D004247:DNA