this `` '' maturase '' '' , colocalized in the neurosecretory granules with the somatostatin products , generates both the n-terminal peptide s-28 , and the tetradecapeptide hormone ( s-14 ) from the somatostatin-28 , acting as a `` '' s-28 convertase '' '' producing free arg and lys residues present at the pair of basic amino acids signal .
C0024337
and
C0301714
of basic amino a