Receptor-type tyrosine-protein phosphatase H is an enzyme that in humans is encoded by the PTPRHgene.[5][6]
The protein encoded by this gene is a member of the protein tyrosine phosphatase (PTP) family. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. This PTP possesses an extracellular region, a single transmembrane region, and a single intracytoplasmic catalytic domain, and thus represents a receptor-type PTP. The extracellular region contains eight fibronectin type III-like repeats and multiple N-glycosylation sites. The gene was shown to be expressed primarily in brain and liver, and at a lower level in heart and stomach. It was also found to be expressed in several cancer cell lines, but not in the corresponding normal tissues.[6]
Marneros AG, Mehenni H, Reichenberger E, et al. (2001). "Gene for the human transmembrane-type protein tyrosine phosphatase H (PTPRH): genomic structure, fine-mapping and its exclusion as a candidate for Peutz-Jeghers syndrome". Cytogenet. Cell Genet. 92 (3–4): 213–6. doi:10.1159/000056905. PMID11435690. S2CID20187527.
