in a soluble preparation of striatal tyrosine hydroxylase , activity was increased by addition of lower concentrations of camp or dibutyryl camp than with unbroken nerve endings , when subsaturating concentrations of tyrosine and cofactor were employed , while butyrate , chloride , 5'-amp , adp , atp , and cyclic gmp had no activating effect .
C0001455
camp
C0012054
dibutyryl camp