Opioid Peptides |
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| Endogenous Opiates; Opiate Peptides; Opioid Peptide; Peptide, Opioid; Peptides, Opiate; Peptides, Opioid | |
| The endogenous peptides with opiate-like activity. The three major classes currently recognized are the ENKEPHALINS, the DYNORPHINS, and the ENDORPHINS. Each of these families derives from different precursors, proenkephalin, prodynorphin, and PRO-OPIOMELANOCORTIN, respectively. There are also at least three classes of OPIOID RECEPTORS, but the peptide families do not map to the receptors in a simple way. | |