An L-alpha-amino acid which is L-aspartic acid or any of the essential amino acids biosynthesised from it (asparagine, lysine, methionine, threonine and isoleucine). A closed class.
Azatyrosine
cyclo(Glu-Glu)
CYCLOPROPYLALANINE
Cystathionine sulfoxide
Dehydro-proline
Eglumetad
epsilon-(Hexanoyl)lysine
erythrose 4-phosphate/phosphoenolpyruvate family amino acid +