Assertion: l proline | /r/HasProperty | essential
Facets:
value: for the synthesis of collagen
type: PURPOSE
Source sentences:
text: L-Proline and L-Lysine are essential for the manufacture of hormones, enzymes, cellular messaging and helps boost the immune system
text: L-Proline is an amino acid that is essential for the synthesis of collagen, the most abundant protein in mammals.