the present study suggests that ( a ) unphosphorylated insrk has a large hydrophilic substrate binding domain and is effectively inhibited by long-chain polypeptides but not by short sequences , ( b ) some of the amino , carboxyl , and hydroxyphenyl side chains are essential to the inhibitory nature of these polypeptides , and ( c ) derivatives that fail to inhibit autophosphorylation can still be recognized and phosphorylated by active insrk .
C1515032
substrate
C0031727
insrk