AKAP4, AKAP82, A-kinase anchor protein 4, A-kinase anchor protein 82kD, Major sperm fibrous sheath protein, Protein kinase A-anchoring protein 4

The A-kinase anchor proteins (AKAPs) are a group of structurally diverse proteins, which have the common function of binding to the regulatory subunit of protein kinase A (PKA) and confining the holoenzyme to discrete locations within the cell. This gene encodes a member of the AKAP family. The encoded protein is localized to the sperm flagellum and may be involved in the regulation of sperm motility. Alternative splicing of this gene results in two transcript variants encoding different isoforms.