Open AccessRibosome structure: localization of 3' end of RNA in small subunit by immunoelectronmicroscopy.
Author(s) -
H M Olson,
Dohn G. Glitz
Publication year - 1979
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.76.8.3769
Subject(s) - ribosome , protein subunit , ribosomal rna , eukaryotic large ribosomal subunit , eukaryotic ribosome , chemistry , dinitrophenyl , rna , eukaryotic small ribosomal subunit , ribosomal protein , microbiology and biotechnology , biochemistry , 50s , escherichia coli , antibody , biology , genetics , gene
The 3' end of the RNA in the 30S ribosomal subunit of Escherichia coli has been modified by oxidation with sodium periodate and conjugation with the (mono) dinitrophenyl derivative of ethylenediamine. Antibodies, induced with dinitrophenyl-bovine serum albumin, interact with the modified ribosomal subunits. Electron micrographs of negatively stained antibody-subunit complexes show individual ribosomal subunits to which a single antibody molecule is bound and subunit dimers cross-linked by an IgG molecule. The modified 3' terminus has been localized to a single site on the upper portion of the platform region of the 30S subunit. This location is consistent with earlier placements of proteins that react with the 3' end of the RNA.