sentence1: The mammalian Arp, BAF53 (BRG-associated factor), and β-actin were initially found as components of the mammalian SWI/SNF-like BAF chromatin-remodeling complex.
sentence2: In addition, Arp4-related BAF53 and β-actin are components of the human SWI/SNF complex and could play a role in its signal-regulated binding to the chromatin/nuclear matrix