A-Kinase Anchoring Protein 4
HAKAP82
AKAP82
HI
A-Kinase Anchor Protein 82 KDa
Fsc1
CT99
P82
Protein Kinase A Anchoring Protein 4
Major Sperm Fibrous Sheath Protein
A Kinase (PRKA) Anchor Protein 4
A-Kinase Anchor Protein 4
Cancer/Testis Antigen 99
Testis-Specific Gene HI
AKAP 82
AKAP-4
PRKA4
Epididymis Secretory Sperm Binding 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. [provided by RefSeq, Jul 2008]
Forensic Context
A study in human body fluids demonstrated that the mRNA marker AKAP4, which is highly expressed in semen and plays a role in sperm motility regulation, was validated as a specific identifier for semen using two rapid detection platforms [Lin et al. DOI:10.1016/j.fsigen.2025.103376].