Enables protein kinase binding activity. Predicted to be involved in positive regulation of cold-induced thermogenesis; regulation of primary metabolic process; and signal transduction. Located in apical plasma membrane and cytoplasm. Part of cAMP-dependent protein kinase complex and nucleotide-activated protein kinase complex. Orthologous to human PRKAB2 (protein kinase AMP-activated non-catalytic subunit beta 2). [provided by Alliance of Genome Resources, Apr 2022]