the circular dichroic spectra of the acyl-zymogens do not , but conversion of the acyl-zymogens to acyl-enzymes changes the circular dichroic spectra to those characteristic of the acyl-enzymes . alpha-carbamyl-epsilon-guanidinated trypsin is a derivative which resembles trypsinogen in lacking activity toward specific ester substrates but possessing low activity toward p-nitrophenyl p'-guanidinobenzoate .
C0014436
zymogens
C0041243
trypsinogen