Desmosine

Desmosine
IUPAC name 4-(4-amino-4-carboxybutyl)-1-(5-amino-5-carboxypentyl)-3,5-bis(3-amino-3-carboxypropyl)pyridinium
Identifiers
CAS number	11003-57-9
PubChem	25435
ChemSpider	23745 Y
Jmol-3D images	Image 1
SMILES O=C(O)C(N)CCCC[n+]1cc(c(c(c1)CCC(C(=O)O)N)CCCC(C(=O)O)N)CCC(C(=O)O)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-UHFFFAOYSA-O Y InChI=1/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 Key: VEVRNHHLCPGNDU-IKLDFBCSAT
Properties
Molecular formula	C24H40N5O8
Molar mass	526.6 g mol−1
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
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.

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

This desmosine is responsible for the rubber properties of elastin.