The molecule is the zwitterion resulting from the transfer of a proton from the carboxy group to the beta-amino group of 3-amino-D-alanine. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a tautomer of a 3-amino-D-alanine.
(2R)-2-amino-3-azaniumylpropanoate