The acidic ribosomal P proteins form a distinct protuberance on the 60 S subunit of eukaryotic ribosomes. In yeast this structure is composed of two heterodimers (P1alpha-P2beta and P1beta-P2alpha) attached to the ribosome via P0. Although for prokaryotic ribosomes the isolation of a pentameric stalk complex comprising the analogous proteins is well established, its observation has not been reported for eukaryotic ribosomes. We used mass spectrometry to examine the composition of the stalk pr...Expand abstract
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Mass spectrometry of ribosomes from Saccharomyces cerevisiae: implications for assembly of the stalk complex.
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