Bacteriophage Structure: Determination of Head-Tail Symmetry Mismatch for Caulobacter crescentus Phage [unknown]CbK

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Science  22 Feb 1974:
Vol. 183, Issue 4126, pp. 744-747
DOI: 10.1126/science.183.4126.744


Electron micrographs of negatively stained bacteriophage [unknown]CbK have been analyzed by Fourier methods. Computer-calculated Fourier transforms that contain phase as well as magnitude information have established fivefold rotational symmetry for the head and threefold rotational symmetry for the tail. These results indicate that a symmetry match is not necessarily required between separate structural components of a bacteriophage.