Kyotorphin

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
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
UNII
  • InChI=1S/C15H23N5O4/c16-11(8-9-3-5-10(21)6-4-9)13(22)20-12(14(23)24)2-1-7-19-15(17)18/h3-6,11-12,21H,1-2,7-8,16H2,(H,20,22)(H,23,24)(H4,17,18,19)/t11-,12-/m0/s1 Y
    Key: JXNRXNCCROJZFB-RYUDHWBXSA-N Y
  • InChI=1/C15H23N5O4/c16-11(8-9-3-5-10(21)6-4-9)13(22)20-12(14(23)24)2-1-7-19-15(17)18/h3-6,11-12,21H,1-2,7-8,16H2,(H,20,22)(H,23,24)(H4,17,18,19)/t11-,12-/m0/s1
    Key: JXNRXNCCROJZFB-RYUDHWBXBC
  • O=C(O)[C@@H](NC(=O)[C@@H](N)Cc1ccc(O)cc1)CCC/N=C(\N)N
Properties
C15H23N5O4
Molar mass 337.380 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N verify (what is YN ?)
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. 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.

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