Title: Nociceptin
CAS Registry Number: 170713-75-4
CAS Name: Orphanin FQ (swine)
Additional Names: orphanin FQ; OFQ
Molecular Formula: C79H129N27O22
Molecular Weight: 1809.04
Percent Composition: C 52.45%, H 7.19%, N 20.91%, O 19.46%
Literature References: Seventeen amino acid neuropeptide identified as the endogenous ligand of the orphan opioid receptor, ORL-1. Shows a wide variety of pharmacological effects. Structurally related to the opioids, but does not bind to opiate receptors. Isoln from rat brain: J.-C. Meunier et al., Nature 377, 532 (1995); from porcine hypothalmus: R. K. Reinscheid et al., Science 270, 792 (1995). Distribution and localization of binding with opioid peptides: S. Schulz et al., NeuroReport 7, 3021 (1996). Binding affinity: I. D. Adapa, L. Toll, Neuropeptides 31, 403 (1997). Review: J.-C. Meunier, Eur. J. Pharmacol. 340, 1-15 (1997). Review of pharmacology and structure-activity: G. Henderson, A. T. McKnight, Trends Pharmacol. Sci. 18, 293-300 (1997).

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