two synthetic polypeptides which differ only in the order of amino acids in their nh2-terminal side chains , namely , ( tyr-tyr-glu-glu ) -poly ( dlala ) - -poly ( llys ) and ( tyr-glu-try-glu ) -poly ( dlala ) - -poly ( llys ) , were found to be under different genetic control .
C0002520
amino acids
C0061472
glu