Assertion: collagen's acid | /r/CreatedBy | certain organisms
Facets:
value: naturally
type: MANNER
Source sentences:
text: There are at least nine examples of non-coding amino acids that are naturally produced by certain organisms, mostly microbes, and are thought to be utilized as a defense mechanism against pathogens.7 These unusual amino acids are analogues of the coding amino acids, including glutamic acid, leucine, L-arginine, serine, and proline.