
1) Endorphin 2) Opioid peptide
Found on
https://www.crosswordclues.com/clue/enkephalin

Enkephalins are molecules produced naturally by the central nervous system to numb pain. Enkephalins lock into receptors on the surface of a nerve cell and open ion channels. Ions flow into the cell and the distribution of charge on either side of the cell membrane becomes such that the nerve cell cannot fire.
Found on
http://antoine.frostburg.edu/chem/senese/101/glossary/e.shtml

An enkephalin is a pentapeptide involved in regulating nociception in the body. The enkephalins are termed endogenous ligands, as they are internally derived and bind to the body`s opioid receptors. Discovered in 1975, two forms of enkephalin were revealed, one containing leucine (`leu`), and the other containing methionine (`met`). Both are ...
Found on
http://en.wikipedia.org/wiki/Enkephalin

(from the article `drug`) ...the University of Aberdeen in Scotland, of two potent naturally occurring analgesic pentapeptides (peptides containing five linked amino acids) in ... Endorphins and enkephalins, each comprising five amino acids in the molecule, are present in the vagus nerves and the myenteric plexus. They have the ... B...
Found on
http://www.britannica.com/eb/a-z/e/32

(en-kef´ә-lin) either of two peptides consisting of four identical amino acids and either leucine or methionine; they are referred to as leu-enkephalin and met-enkephalin and function as neurotransmitters or neuromodulators at many locations in the brain and spinal cord and are involved with pain perception, movement, m...
Found on
http://www.encyclo.co.uk/local/21001

[
n] - an endorphin having opiate qualities
Found on
http://www.webdictionary.co.uk/definition.php?query=enkephalin
noun an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere
Found on
https://www.encyclo.co.uk/local/20974

either of two pentapeptides that bind to morphine receptors in the central nervous system and have opioid properties of relatively short duration; one pentapeptidehas the amino acid sequence Tyr-Gly-Gly-Phe-Met and the otherhas the sequence Tyr-Gly-Gly-Phe-Leu.
Found on
https://www.infoplease.com/dictionary/enkephalin
No exact match found.