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Description

The NOP receptor (also known as ORL1) is related to the opioid receptor family of GPCRs but does not bind to classical opioids. An endogenous ligand for NOP has been characterized and termed orphanin FQ or nociceptin (OFQ/N), which in turn does not bind to other members of the opioid receptor family. NOP is expressed widely in the CNS, and binding of OFQ/N to NOP1 appears to function in nociception, locomotor activity, anxiety, reward, memory and tolerance to classical opioids (Mogil and Pasternak, 2001). Millipore's NOP membrane preparations are crude membrane preparations made from our proprietary stable recombinant cell lines to ensure high-level of GPCR surface expression, thus, they are ideal HTS tools for screening of agonists and antagonists of NOP. The membrane preparations exhibit a Kd of 0.06 nM for [125II]-Nociceptin. With 0.1 nM [125I]-Nociceptin, 5mug/well NOP Membrane Prep typically yields greater than 10-fold signal-to-background ratio., Full-length human OPRL1 cDNA encoding NOP