366.84
[1]. Tian XZ, et, al. Effects and underlying mechanisms of human opiorphin on colonic motility and nociception in mice. Peptides. 2009 Jul;30(7):1348-54.
[2]. Wisner A, et, al. Human Opiorphin, a natural antinociceptive modulator of opioid-dependent pathways. Proc Natl Acad Sci U S A. 2006 Nov 21;3(47):17979-84.