Is predicted to encode a protein with the following domains: Ribosomal protein S5 domain 2-type fold, subgroup; Switch protein XOL-1, GHMP-like; and GHMP kinase, C-terminal domain superfamily. Is an ortholog of C. elegans xol-1. In C. elegans, xol-1 is involved in dosage compensation by hypoactivation of X chromosome; intergenic mRNA trans splicing; and male sex determination.