2,3-Diaminopropionic acid (2,3-diaminopropionate, Dpr)[1] is a non-proteinogenic amino acid found in certain secondary metabolites, including zwittermicin A[2] and tuberactinomycin.

[3] 2,3-Diaminopropionate is formed by the pyridoxal phosphate (PLP) mediated amination of serine.