Is predicted to encode a protein with the following domains: Cyclin-like; Cyclin; Cyclin, C-terminal domain; Cyclin-like superfamily; Cyclin, N-terminal; and Cyclin, N-terminal domain. Is an ortholog of C. elegans cyb-1. In C. elegans, cyb-1 is involved in mitotic cell cycle; oocyte maturation; and positive regulation of protein phosphorylation.