There are a number of ELISA Kits available for the measurement of HPTP-BETA, another term for the human protein, protein tyrosine phosphatase receptor type B. Other synonyms may include: receptor-type tyrosine-protein phosphatase beta, VE-PTP, protein tyrosine phosphatase receptor type beta polypeptide, vascular endothelial protein tyrosine phosphatase, HPTPB, PTPB, and R-PTP-BETA. It is encoded by the PTPRB gene to yield a protein 1997 amino acids in length and 224.3 kDa in size. However, there are up to 4 reported isoforms. The protein, an enzyme, is categorized into the Protein-tyrosine phosphatase family, Receptor class 3 subfamily. Versions of HPTP-BETA are present in other organisms, including: Mouse, Rat, Zebrafish, Chicken.