Is predicted to encode a protein with the following domains: Switch protein XOL-1, N-terminal; Ribosomal protein S5 domain 2-type fold; and Ribosomal protein S5 domain 2-type fold, subgroup. 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.