(R)-3-amino-2-methylpropanoate + pyruvate = 2-methyl-3-oxopropanoate + L-alanine
(r)-3-amino-2-methylpropanoate + pyruvate = 2-methyl-3-oxopropanoate + l-alanine
"D-3-aminoisobutyrate--pyruvate transaminase"
"d-3-aminoisobutyrate--pyruvate transaminase"