Determination of proteins with the Coomassie brilliant blue G 250 method. III. Behavior of various pure proteins and comparative analysis with the biuret and Lowry methods

Some proteins were tested by the Bradford's method with Coomassie Brilliant Blue G 250. The findings were compared to those obtained by the Lowry's and the biuret methods. Coomassie, as the other methods, has the inconvenient of giving different absorbaces according to the nature of single protein. The use of standards of analogous composition in assaying proteins by the Bradford's method is suggested.