Enables NF-kappaB binding activity and protease binding activity. Involved in several processes, including negative regulation of cysteine-type endopeptidase activity involved in apoptotic process; negative regulation of vasoconstriction; and positive regulation of T cell mediated cytotoxicity. Located in several cellular components, including apical plasma membrane; basolateral plasma membrane; and membrane raft. Part of protein-containing complex. Human ortholog(s) of this gene implicated in several diseases, including brain ischemia; obesity; toxic shock syndrome; type 2 diabetes mellitus; and urinary tract infection. Orthologous to human HSPA1B (heat shock protein family A (Hsp70) member 1B). [provided by Alliance of Genome Resources, Apr 2022]