Binds to poly-G sequences in RNA. May function in post-translational regulation processes. Expressed in oocytes, and in specialized cell types such as neural retina cones in adults. Expressed both maternally and zygotically throughout oogenesis and embryogenesis through to at least the tadpole stage. Also expressed in adults. Phosphorylated. Phosphorylation enhances RNA binding. Belongs to the krueppel C2H2-type zinc-finger protein family.