Enables identical protein binding activity; protein folding chaperone; and ubiquitin protein ligase binding activity. Involved in several processes, including chaperone-mediated protein folding; egg-laying behavior; and sarcomere organization. Located in cell cortex and cleavage furrow. Expressed in body wall musculature and non-striated muscle. Human ortholog(s) of this gene implicated in cataract 43 and myofibrillar myopathy 11. Is an ortholog of human UNC45B (
unc-45 myosin chaperone B).