advantages are that ( 1 ) it requires only small amounts of protein ( 100-200 micrograms 70s ribosomal proteins ) , ( 2 ) reproducibility is very high , and ( 3 ) it makes it easier to identify mutational alterations in proteins s10 , l4 , l10 , and l21 which hardly migrate out of the sample gel with our previous electrophoresis procedure .
C0035552
ribosomal proteins
C0033684
proteins