label: (R)-3-amino-2-methylpropanoate + NH4(+) + CO2 => 3-(carbamoylamino)-2-methylpropanoate + H2O + 2 H(+)
label_lc: (r)-3-amino-2-methylpropanoate + nh4(+) + co2 => 3-(carbamoylamino)-2-methylpropanoate + h2o + 2 h(+)