SMURF2 protein is an E3 ubiquitin protein ligase that interacts with SMAD7 to induce ubiquitin-dependent degradation of TGF-β receptors and downregulate TGF-β signaling. This interaction triggers autocatalytic degradation of SMURF2 and is antagonized by AIMP1. SMURF2 Protein, Human is the recombinant human-derived SMURF2 protein, expressed by E. coli , with tag free.