Abstract
Ribosomal proteins from the yeast Saccharomyces cerevisiae were separated, on a preparative scale, by ion-exchange h.p.l.c. Proteins from the small and large ribosomal subunits were resolved, respectively, into 33 and 23 peaks, and most of the proteins present in these peaks were identified by using one- and two-dimensional gel electrophoresis. Several of the peaks appeared to contain a single protein uncontaminated by other species. Ribosomal proteins were also separated by using reverse-phase h.p.l.c. Analysis of the peaks resolved indicated that the order of elution for the proteins of both ribosomal subunits is, in certain cases, different for each of the two h.p.l.c. techniques used. Thus a combination of the two chromatographic methods employed here has the potential to facilitate the rapid and preparative separation of each of the proteins present in yeast ribosomes.
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