Crossword Clue:

an essential amino acid also TRYPTOPHANE

AnswerCrossword Clue
LEUCINEAn essential amino acid
LYSINEEssential amino acid
ALANINAn amino acid
LYSINEAn amino acid
DOPAAn amino acid
ALANINEAn amino acid: Chem.
DOPAAn amino acid, for short
PABAInitials for an amino acid.