Divalent metal cation transporter. Mediates transport of divalent metal cations in an order of Mg(2+) > Co(2+) > Mn(2+) > Sr(2+) > Ba(2+) > Cu(2+) > Fe(2+). Shares weak sequence similarity with the cyclin family, hence its name. However, it has no cyclin-like function in vivo. Belongs to the ACDP family.