Ready-to-use ELISA kits are available for the detection of CDC-like kinase 1, an alias of the protein, CDC like kinase 1. The official gene symbol is CLK1. The protein, with a mass of 57.3 kDa and length of 484 residues, is reported to be nuclear. It is a member of the Protein kinase superfamily, CMGC Ser/Thr protein kinase family, Lammer subfamily and may be known by other names, including: STY, CLK, protein tyrosine kinase STY, CDC28/CDC2-like kinase, and dual specificity protein kinase CLK1.