It has been observed that when alpha-catenin is not in a molecular complex with beta-catenin, it dimerizes and functions to regulate actin filament assembly, possibly by competing with Arp2/3 protein.
Observouse que cando a alfa-catenina non está en complexo molecular coa beta-catenina, dimerízase e funciona regulando a ensamblaxe dos filamentos de actina, posiblemente ao competir coa proteína Arp2/3.