Desmosine

Desmosine

Names
IUPAC name 6-{4-[(4S)-4-Amino-4-carboxybutyl]-3,5-bis[(3S)-3-amino-3-carboxypropyl]-1-pyridiniumyl}-L-norleucine
Identifiers
CAS Number	11003-57-9 Y
3D model (Jmol)	Interactive image
ChemSpider	13085543 N
PubChem CID	25435
UNII	4MOL2J0TLY N
InChI InChI=1S/C24H39N5O8/c25-17(21(30)31)5-1-2-11-29-12-14(7-9-19(27)23(34)35)16(4-3-6-18(26)22(32)33)15(13-29)8-10-20(28)24(36)37/h12-13,17-20H,1-11,25-28H2,(H3-,30,31,32,33,34,35,36,37)/p+1 Y Key: VEVRNHHLCPGNDU-MUGJNUQGSA-O N
SMILES O=C(O)[C@@H](N)CCCC[n+]1cc(c(c(c1)CC[C@@H](C(=O)O)N)CCC[C@@H](C(=O)O)N)CC[C@@H](C(=O)O)N
Properties
Chemical formula	C24H40N5O8
Molar mass	526.61 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YN ?)
Infobox references

A desmosine cross-link is formed from three allysyl side chains plus one unaltered lysyl side chain from the same or neighbouring polypeptides. Detection of desmosine in urine, plasma or sputum samples can be a marker for elastin breakdown due to high elastase activity related to certain diseases.

It is found in elastin. Desmosine causes a yellow color.