[mothers against decapentaplegic homolog 2 isoform 1, Mothers against decapentaplegic homolog 2, mothers against decapentaplegic homolog 2, MAD homolog 2, mother against DPP homolog 2, Sma- and Mad-related protein 2, SMAD, mothers against DPP homolog 2, SMAD family member 2, JV18-1, Mad-related protein 2, hMAD-2, SMAD family member 2]