Ready-to-use ELISA kits are available for the detection of A Kinase Anchor Protein 4, an alias of the protein, A-kinase anchoring protein 4. The official gene symbol is AKAP4. The protein has a mass of 94.5 kDa and length of 854 residues. It is a member of the AKAP110 family and may be known by other names, including: testis-specific gene HI, protein kinase A anchoring protein 4, cancer/testis antigen 99, A-kinase anchor protein 82 kDa, A kinase (PRKA) anchor protein 4, and A-kinase anchor protein 4, and AKAP-4.