Two-dimensional gel electrophoresis separates all of the component proteins of the ribosomal subunits of Escherichia coli. This method shows 21 proteins in the 30S, and 34 proteins in the 50S, subunit.
Ribosomal proteins. XII. Number of proteins in small and large ribosomal subunits of Escherichia coli as determined by two-dimensional gel electrophoresis.