Desmosine

Desmosine

IUPAC name	4-(4-amino-4-carboxybutyl)-1-(5-amino-5-carboxypentyl)- 3,5-bis(3-amino-3-carboxypropyl)pyridinium
Molecular formula	C24H40N5O8
Molar mass	526.603
CAS number	[11003-57-9]
PubChem	25435
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

A desmosine cross-link is formed when 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.

Protein primary structure and posttranslational modifications
General	Protein biosynthesis \| Peptide bond \| Proteolysis \| Racemization \| N-O acyl shift
N-terminus	Acetylation \| Formylation \| Pyroglutamate \| Methylation \| Glycation \| Myristoylation (Gly) \| carbamylation
C-terminus	Amidation \| Glycosyl phosphatidylinositol (GPI) \| O-methylation \| Glypiation \| Ubiquitination \| Sumoylation
Lysine	Methylation \| Acetylation \| Acylation \| Hydroxylation \| Ubiquitination \| SUMOylation \| Desmosine \| ADP-ribosylation \| Deamination and Oxidation to aldehyde
Cysteine	Disulfide bond \| Prenylation \| Palmitoylation
Serine/Threonine	Phosphorylation \| Glycosylation \| Methylidene-imidazolone (MIO) formation
Tyrosine	Phosphorylation \| Sulfation \| Porphyrin ring linkage \| Flavin linkage \| p-Hydroxybenzylidene-imidazolone formation \| Lysine tyrosyl quinone (LTQ) formation \| Topaquinone (TPQ) formation
Asparagine	Deamidation \| Glycosylation
Aspartate	Succinimide formation
Glutamine	Transglutamination
Glutamate	Carboxylation \| Methylation \| Polyglutamylation \| Polyglycylation
Arginine	Citrullination \| Methylation
Proline	Hydroxylation
←Amino acids Secondary structure→

The content of this section is licensed under the GNU Free Documentation License (local copy). It uses material from the Wikipedia article "Desmosine" modified December 22, 2007 with previous authors listed in its history.