Protein Tyrosine Phosphatase IA2 (PTPRN) Human Recombinant Protein

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 catalytic domain, and thus represents a receptor-type PTP. This PTP was found to be an autoantigen that is reactive with insulin-dependent diabetes mellitus (IDDM) patient sera, and thus may be a potential target of autoimmunity in diabetes mellitus. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Dec 2010]

PTPRN: Implicated in neuroendocrine secretory processes. May be involved in processes specific for neurosecretory granules, such as their biogenesis, trafficking or regulated exocytosis or may have a general role in neuroendocrine functions. Seems to lack intrinsic enzyme activity. May play a role in the regulation of secretory granules via its interaction with SNTB2. Belongs to the protein-tyrosine phosphatase family. Receptor class 8 subfamily. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Membrane protein, integral; Receptor protein phosphatase, tyrosine; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 2q35-q36.1

Cellular Component: integral to membrane

Molecular Function: GTPase binding; protein binding; spectrin binding; protein tyrosine phosphatase activity

Biological Process: response to reactive oxygen species; response to cAMP; response to estrogen stimulus; insulin secretion; cytokine and chemokine mediated signaling pathway; response to glucose stimulus; protein amino acid dephosphorylation; response to insulin stimulus