There are a number of ELISA Kits available for the measurement of IAN4, another term for the human protein, GTPase, IMAP family member 5. Other synonyms may include: immune associated nucleotide 4 like 1, immune-associated nucleotide-binding protein 5, immunity associated protein 3, immunity-associated nucleotide 5 protein, HIMAP3, IAN-5, and IAN4. It is encoded by the GIMAP5 gene to yield a protein 307 amino acids in length and 34.8 kDa in size. However, there are up to 2 reported isoforms. The protein is categorized into the TRAFAC class TrmE-Era-EngA-EngB-Septin-like GTPase superfamily, AIG1/Toc34/Toc159-like paraseptin GTPase family, IAN subfamily. Versions of IAN4 are present in other organisms, including: Mouse, Rat, Chicken.