the degradation of thyroliberin ( less than glu-his-pro-nh2 ) to its component amino acids by the soluble fraction of guinea pig brain is catalysed by four enzymes namely a pyroglutamate aminopeptidase , a post-proline cleaving enzyme , a post-proline dipeptidyl aminopeptidase and a proline dipeptidase .
C0061472
glu
C0002520
amino acids