The following chromosome 3 open reading frame 18 ELISA kits are useful research tools for the measurement of chromosome 3 open reading frame 18 in biological samples. In humans this protein is encoded by the C3orf18 gene. The canonical protein structure is reported to have an amino acid sequence of 162 residues and a mass of 17.5 kDa. Its subcellular location is known to be in the membrane. As many as 2 protein isoforms have been reported. This protein may also be known as G20 and uncharacterized protein C3orf18.