Ready-to-use ELISA kits are available for the detection of Testis-Specific serine Kinase 1, an alias of the protein, testis specific serine kinase 1B. The official gene symbol is TSSK1B. The protein, with a mass of 41.6 kDa and length of 367 residues, is reported to be cytoplasmic. It is a member of the Protein kinase superfamily, CAMK Ser/Thr protein kinase family and may be known by other names, including: spermiogenesis associated 4, serine/threonine-protein kinase 22A, TSSK-1, TSK-1, and testis-specific serine/threonine-protein kinase 1, and testis-specific serine kinase 1.