Complement C3/C3a proteins play a key role in initiating the complement system, serving as substrates for C3 convertase in both the classical and alternative pathways. Upon activation, C3 undergoes proteolytic cleavage, yielding C3b, which is covalently bound to surface or immune aggregates. Complement C3a Protein, Bovine (His-SUMO) is the recombinant bovine-derived Complement C3/C3a protein, expressed by E. coli , with N-His, N-SUMO labeled tag.
