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. 1987 Apr;6(4):1107–1114. doi: 10.1002/j.1460-2075.1987.tb04865.x

Three-dimensional structure of the large ribosomal subunit from Escherichia coli.

M Radermacher, T Wagenknecht, A Verschoor, J Frank
PMCID: PMC553509  PMID: 3297672

Abstract

The three-dimensional structure of the large (50S) ribosomal subunit from Escherichia coli has been determined from electron micrographs of negatively stained specimens. A new method of three-dimensional reconstruction was used which combines many images of individual subunits recorded at a single high tilt angle. A prominent feature of the reconstruction is a large groove on the side of the subunit that interacts with the small ribosomal subunit. This feature is probably of functional significance as it includes the regions where the peptidyl transferase site and the binding locations of the elongation factors have been mapped previously by immunoelectron microscopy.

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