The isoelectric point, pl, of the protein adenosine deaminase is \( \mathbf{4 . 8 5} \), while that of lysozyme is \( \mathbf{1 1} \). What is the net charge of adenosine deaminase at pH 5.1 ? What is the net charge of lysozyme at pH 10.2 ? The isoelectric point of tryptophan is \( \mathbf{5 . 8 9} \); phenylalanine, \( \mathbf{5 . 4 8} \). During paper electrophoresis at pH 6.5 , toward which electrode does tryptophan migrate? During paper electrophoresis at \( \mathrm{pH} \mathbf{4 . 5} \), toward which electrode does phenylalanine migrate?