X-ray Diffraction Study of a DNA Which Contains Uracil

Science  27 Mar 1964:
Vol. 143, Issue 3613, pp. 1450-1451
DOI: 10.1126/science.143.3613.1450


Three-dimensional structure of DNA from PBS2 bacteriophage, which contains uracil in place of the more usual thymine, is the same as that of "normal" DNA. The difference in secondary structure between DNA and RNA thus appears to be due to the 2'-hydroxyl group alone.