Explain the role of pancreatic juice in the digestion of proteins.

Pancreatic juice contans the proteins digesting enzymes namely trypsiongen, chymotrypsinogen and carboxypeptidase.
* Inactive trypsiongen is converted into trypsin by enzyme enterokinase.
$* \mathrm{Trypsiongen} \stackrel{\mathrm{Enterokinase}}{\to } \mathrm{trypsin}.$
$* \mathrm{Trypinogen} \stackrel{\mathrm{Trypsin}}{\to } \underset{\left(\mathrm{Autocatalysis}\right)}{\mathrm{Trypsin}}$
$*$ Inactive chymotrypsinogen is converted into chymotrypsin by enzyme trypsin.
$\begin{array}{ccc}\mathrm{Proteins},\mathrm{peptones},\mathrm{proteoses}\underset{\mathrm{carboxypeptidase}}{\overset{\mathrm{trypsin}/\mathrm{chymotrypsin}}{\to }}& \mathrm{tripeptides}+\mathrm{dipeptides}& \\ & & \end{array}$