The CAPZA2 protein is a member of the F-actin capping protein family and binds to the barbed ends of actin filaments, preventing subunit exchange without severing the filaments. CAPZA2 Protein, Human (His-SUMO) is the recombinant human-derived CAPZA2 protein, expressed by E. coli , with N-6*His, N-SUMO labeled tag.