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Opioid Peptides are short sequences of amino acids which mimic the effect of opiates in the brain. Opioid peptides may be produced by the body itself, for example endorphins, or be absorbed from partially digested food (casomorphins, exorphins and rubiscolins). The effect of these peptides vary, but they all resemble opiates. The opioid food peptides have lengths of typically 4-8 amino acids. The body's own opioids are generally much longer.
Brain opioid peptide systems are known to play an important role in motivation, emotion, attachment behaviour, the response to stress and pain, and the control of food intake.
Opioid peptides produced by the body
The human genome contains three homologous genes that are known to code for endogenous opioid peptides. Each gene codes for a large protein that can be processed to yield smaller peptides that have opiate-like activity.
Opioid food peptides
Opioid peptides of microbial origin
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Opioid_peptide". A list of authors is available in Wikipedia.|