There are a number of ELISA Kits available for the measurement of guanine nucleotide binding protein, alpha O, another term for the human protein, G protein subunit alpha o1. Other synonyms may include: guanine nucleotide-binding protein G(o) subunit alpha, GO2-q chimeric G-protein, guanine nucleotide binding protein (G protein) alpha activating activity polypeptide O, guanine nucleotide-binding regulatory protein 2, G-ALPHA-o, GNAO, and NEDIM. It is encoded by the GNAO1 gene to yield a protein 354 amino acids in length and 40.1 kDa in size. However, there are up to 2 reported isoforms. The protein is categorized into the G-alpha family, G(i/o/t/z) subfamily. Versions of guanine nucleotide binding protein, alpha O are present in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.