Substrate for γ-glutamyl transpeptidase

L-cycloserine(L-环丝氨酸) is a potent inhibitor of serine palmitoyltransferase, the first step of sphingolipid synthesis.

Dansyl-L-alanine contains an N-terminal fluorophore (dansyl) making it useful as a fluorescent marker/probe. Dansylalanine can be incorporated into proteins by newly developing techniques that expand the genetic code.