
1) Amino acid
Found on
https://www.crosswordclues.com/clue/isodesmosine

Isodesmosine is a lysine derivative found in elastin. Isodesmosine is an isomeric pyridinium-based amino acid resulting from the condensation of four lysine residues between elastin proteins by lysyl-oxidase. These represent ideal biomarkers for monitoring elastin turnover because these special cross-links are only found in mature elastin in mamma...
Found on
http://en.wikipedia.org/wiki/Isodesmosine

<chemical> 2-(4-amino-4-carboxybutyl)-1-(5-amino-5-carboxypentyl)-3,5-bis(3-amino-3-carboxypropyl)pyridinium. A rare amino acid found in elastin, formed by condensation of four molecules of lysine into a pyridinium ring. ... Chemical name: Pyridinium, 2-(4-amino-4-carboxybutyl)-1-(5-amino-5-carboxypentyl)-3,5-bis(3-amino-3-carboxypropyl)- ......
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: ī′sō-des′mō-sēn Definitions: 1. A cross-linking amino acid formed from lysyl residues; found in elastin.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=45870
No exact match found.