sur-6 encodes a regulatory (B) subunit of serine/threonine protein phosphatase 2A (PP2A-B); sur-6 was initially identified in screens for mutations that suppress the Multivulva phenotype produced by an activated let-60/Ras mutation and enhance the vulvaless and larval lethality phenotype of a hypomorphic lin-45/Raf mutation; in addition, RNAi experiments demonstrate that sur-6 activity is also essential for embryonic development; genetic studies indicate that during vulval development SUR-6 likely acts with the KSR-1 kinase in a parallel pathway that positively regulates RTK-Ras-MAP kinase signaling.
Predicted to enable protein phosphatase regulator activity. Involved in embryo development; nematode larval development; and positive regulation of vulval development. Predicted to be located in cytosol. Predicted to be part of protein phosphatase type 2A complex. Human ortholog(s) of this gene implicated in Alzheimer's disease; breast cancer; spinocerebellar ataxia type 12; and systemic lupus erythematosus. Is an ortholog of human PPP2R2A (protein phosphatase 2 regulatory subunit Balpha) and PPP2R2D (protein phosphatase 2 regulatory subunit Bdelta).