Kyotorphin

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Kyotorphin
Chemical structure of kyotorphin
Names
IUPAC name
(2S)-2-[[(2S)-2-Amino-3-(4-hydroxyphenyl)propanoyl]amino]-5- (diaminomethylideneamino)pentanoic acid
Other names
Kiotorphin
L-Tyrosyl-L-arginine
Identifiers
70904-56-2 N
ChEBI CHEBI:17537 YesY
ChEMBL ChEMBL273521 YesY
ChemSpider 110353 YesY
Jmol-3D images Image
PubChem 123804
Properties
C15H23N5O4
Molar mass 337.37 g·mol−1
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
 N verify (what isYesY/N?)
Infobox references

Kyotorphin (L-tyrosyl-L-arginine) is a neuroactive dipeptide which plays a role in pain regulation in the brain. It was first isolated from bovine brain, by Japanese scientists in 1979.[1] Kyotorphin was named for the site of its discovery, Kyoto, Japan and because of its morphine- (or endorphin-) like analgesic activity. Kyotorphin has an analgesic effect, but it does not interact with the opioid receptors. Instead, it acts by releasing met-enkephalin and stabilizing it from degradation. It may also possess properties of neuromediator/neuromodulator. It has been shown that kyotorphin is present in the human cerebrospinal fluid and that its concentration is lower in patients with persistent pain.[2]

References[edit]

  1. ^ Takagi H, Shiomi H, Ueda H, Amano H (November 1979). "A novel analgesic dipeptide from bovine brain is a possible Met-enkephalin releaser". Nature 282 (5737): 410–2. doi:10.1038/282410a0. PMID 228202. 
  2. ^ Nishimura K, Kaya K, Hazato T, Ueda H, Satoh M, Takagi H (November 1991). "[Kyotorphin like substance in human cerebrospinal fluid of patients with persistent pain]". Masui (in Japanese) 40 (11): 1686–90. PMID 1766121.