CSNK1A1, Casein kinase I isoform alpha, CKI-alpha, CK1
Casein kinases are operationally defined by their preferential utilization of acidic proteins such as caseins as substrates. It can phosphorylate a large number of proteins. Participates in Wnt signaling. Phosphorylates CTNNB1 at Ser-45. May play a role in segregating chromosomes during mitosis.