Potent agonist of the nociceptin (ORL1) receptor, demonstrated both in vitro and in vivo. Selective, competitive antagonism at the nociceptin receptor has also been reported (pA2 = 7.02 and 6.75 in the guinea pig ileum and mouse vas deferens respectively)
LRGILS-NH2 is a reversed amino acid sequence control peptide for SLIGRL-NH2, a protease-activated receptor-2 (PAR2) agonist that facilitates gastrointestinal transit in vivo.