There are a number of ELISA Kits available for the measurement of GA7331, another term for the human protein, tumor associated calcium signal transducer 2. Other synonyms may include: cell surface glycoprotein TROP2, cell surface glycoprotein Trop-2, epithelial glycoprotein-1, membrane component chromosome 1 surface marker 1, and pancreatic carcinoma marker protein GA733-1. It is encoded by the TACSTD2 gene to yield a protein 323 amino acids in length and 35.7 kDa in size. The protein is categorized into the EPCAM family. Versions of GA7331 are present in other organisms, including: Mouse, Rat.