X-ray Diffraction Patterns of Transfer RNA Consistent with the Presence of Short Parallel Helices in the Molecule

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Science  18 Jun 1971:
Vol. 172, Issue 3989, pp. 1234-1237
DOI: 10.1126/science.172.3989.1234


X-ray diffraction data of yeast formylmethionine transfer RNA, Escherichia coli phenylalanine transfer RNA, and Escherichia coli arginine transfer RNA single crystals are compared with the Fourier transform of a helix. The results are consistent with the presence of short parallel double helical segments in the transfer RNA molecules.