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

(N/A) Pancreatic juice contains inactive enzymes such as $Trypsinogen$, $Chymotrypsinogen$, and $Procarboxypeptidases$. These enzymes are essential for protein digestion.
$1$. $Enterokinase$, secreted by the intestinal mucosa, activates $Trypsinogen$ into $Trypsin$:
$Trypsinogen \xrightarrow{Enterokinase} Trypsin + \text{Inactive peptide}$
$2$. $Trypsin$ then activates $Chymotrypsinogen$ and $Procarboxypeptidase$:
$\text{Chymotrypsinogen} \xrightarrow{Trypsin} \text{Chymotrypsin}$
$\text{Procarboxypeptidase} \xrightarrow{Trypsin} \text{Carboxypeptidase}$
$3$. $Chymotrypsin$ converts proteins into peptides:
$\text{Proteins} \xrightarrow{Chymotrypsin} \text{Peptides}$
$4$. $Carboxypeptidase$ acts on the carboxyl end of the peptide chain, releasing the terminal amino acids:
$\text{Peptides} \xrightarrow{Carboxypeptidase} \text{Smaller peptide chains} + \text{Amino acids}$
In summary, partially hydrolyzed proteins (peptones and proteoses) in the chyme are acted upon by these proteolytic enzymes for complete digestion into dipeptides and amino acids:
$\text{Proteins, Peptones, Proteoses} \xrightarrow[Carboxypeptidase]{Trypsin/Chymotrypsin} \text{Dipeptides}$