There are a number of ELISA Kits available for the measurement of Protein Tyrosine Kinase 7, another term for the human protein, protein tyrosine kinase 7 (inactive). Other synonyms may include: inactive tyrosine-protein kinase 7, PTK7 protein tyrosine kinase 7, colon carcinoma kinase 4, pseudo tyrosine kinase receptor 7, CCK-4, and CCK4. It is encoded by the PTK7 gene to yield a protein 1070 amino acids in length and 118.4 kDa in size. However, there are up to 6 reported isoforms. The protein is categorized into the Protein kinase superfamily, Tyr protein kinase family, Insulin receptor subfamily. Versions of Protein Tyrosine Kinase 7 are present in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.