Provided below are ELISA kits targeting small proline rich protein 3, a human protein encoded by SPRR3. This protein is 169 amino acids long, with a mass of 18.2 kDa, and is a member of the Cornifin (SPRR) family. This is reported to be a cytoplasmic protein. Other alias names for this protein include: 22 kDa pancornulin, cornifin beta, and esophagin.