electrophoresis in two dimensions confirmed that the 29,000-dalton polypeptide that was resolved directly from stimulated cells and from ribosomal fractions exhibited a common mobility , and apparent identity of the species was strongly suggested when the 29,000-dalton polypeptides from both sources were compared by peptide mapping following limited digestion with staphylococcus aureus v8 protease .
C0007634
cells
C0035553
ribosomal