Opioid peptides: aspects of their origin, release and metabolism.

@article{Hughes1980OpioidPA,
  title={Opioid peptides: aspects of their origin, release and metabolism.},
  author={John Lawrence Hughes and Adrian R. Beaumont and Jos{\'e} Alfonso Aguilar Fuentes and Bernard Malfroy and Christopher D. Unsworth},
  journal={The Journal of experimental biology},
  year={1980},
  volume={89},
  pages={
          239-55
        }
}
At the present time there is evidence for two families of related peptides which act as ligands for opiate receptor sites. The endorphin group of peptides are derived from the ACTH/LPH precursor pro-opiocortin. The enkephalins appear to be formed from a separate precursor or precursors that have yet to be fully characterized. There appear to be a number of different types of opiate receptors and this may be related to the multiplicity of peptide ligands that have so far been identified. The… CONTINUE READING

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