Assertion: l cysteine | /r/CapableOf | help to synthesize protein
Facets:
value: to synthesize keratin
type: PURPOSE
Source sentences:
text: L-Cysteine also helps to synthesize keratin, a protein found in skin, hair, and nails.
text: L-Cysteine also helps to synthesize keratin, a protein found in skin, hair, and nails.