Answer:

serine

AnswerCrossword Clue
SERINEAmino acid synthesized from glucose
SERINECertain amino acid
SERINEProtein derivative, like gelatin.
SERINEAmino acid.
SERINECrystalline amino acid
SERINEAmino acid in many proteins
SERINEAmino acid in proteins
SERINENonessential amino acid