Unit Definition One unit will form 1.0 μmole of oxaloacetate from phospho(enol)pyruvate and CO2 per min at pH 8.5 at 25 °C.
Physical form Suspension in 2.4 M (NH4)2SO4 solution containing 10 mM phosphate buffer, pH 7.0, 1 mM biotin, 5 mM dithiothreitol and 1 mM phenylmethylsulfonyl fluoride