هذا الجزء يتكلم عن التركيب الكيميائي للكولاجين حاولت اترجمه على الوافي ماطلع لي كلام مفهوم اللي يقدر يترجم لي ترجمه علمية يترجم وله الاجر من رب العالمين
Collagen has an unusual amino acid composition and
sequence. Glycine (Gly) is found at almost every third residue, and collagen contains large amounts of proline, (Pro) — as well as two uncommon derivative amino acids not directly inserted during translation of mRNA: hydroxyproline (Hyp) and hydroxylysine. Prolines and lysines at specific locations relative to glycine are modified post-translationally by different enzymes, both of which require vitamin C as a cofactor. Depending on the type of collagen, varying numbers of hydroxylysines have disaccharides attached to them.
