the leu17-phe18 bond of beta-endorphin is cleaved by a specific endopeptidase that generates the biologically active peptide gamma-endorphin . gamma-endorphin-generating endopeptidase ( gamma ege ) activity was determined by a radiometric assay , using as substrate a radioactively labeled , n- and c-terminally protected pentapeptide : ac-val-thr-leu-lys ( [ 14c ] ch3 ) 2-nhch3 , a derivative of beta-endorphin- ( 15-19 ) .
C0061041
gamma-endorphin
C0014242
endorphin