There are a number of ELISA Kits available for the measurement of Prom, another term for the human protein, prominin 1. Other synonyms may include: antigen AC133, hProminin, hematopoietic stem cell antigen, prominin-like protein 1, CD133, CORD12, and MCDR2. It is encoded by the PROM1 gene to yield a protein 865 amino acids in length and 97.2 kDa in size. However, there are up to 7 reported isoforms. The protein is categorized into the Prominin family. Versions of Prom are present in other organisms, including: Mouse, Rat, Frog.