zeatin + O-acetyl-L-serine <=> L-lupinate + acetate + H(+)
zeatin + o-acetyl-l-serine <=> l-lupinate + acetate + h(+)
zeatin + O-acetyl-L-serine <=> L-lupinate + acetate + H(+)
zeatin + o-acetyl-l-serine <=> l-lupinate + acetate + h(+)