This is the non-catalytic component of the active enzyme, which catalyzes the hydrolysis of ATP coupled with the exchange of Na(+) and K(+) ions across the plasma membrane. The exact function of the beta-2 subunit is not known. Mediates cell adhesion of neurons and astrocytes, and promotes neurite outgrowth. . This is the function of ENSG00000129244 (ATP1B2, ATPase Na+/K+ transporting subunit beta 2).