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- Table of Contents
Facts about Receptor-type tyrosine-protein phosphatase-like N.
Required for the accumulation of normal levels of insulin-containing vesicles and preventing their degradation (PubMed:24843546). Plays a role in insulin secretion in response to glucose stimuli (PubMed:24843546).
| Human | |
|---|---|
| Gene Name: | PTPRN |
| Uniprot: | Q16849 |
| Entrez: | 5798 |

| Belongs to: |
|---|
| protein-tyrosine phosphatase family |

CA 512; EC 3.1.3.48; FLJ16131; IA2; IA-2; IA-2/PTP; ICA 512; ICA3; ICA512; islet cell antigen 2; Islet cell antigen 512; Islet cell autoantigen 3; protein tyrosine phosphatase, receptor type, N; protein tyrosine phosphatase-like N; PTP IA-2; PTPRN; receptor-type tyrosine-protein phosphatase-like N; R-PTP-N
Mass (kDA):
105.848 kDA

| Human | |
|---|---|
| Location: | 2q35 |
| Sequence: | 2; NC_000002.12 (219289623..219309404, complement) |
Expression is restricted to neuroendocrine cells. Found in pancreas, brain and pituitary.
Membrane; Single-pass type I membrane protein. Cytoplasmic vesicle, secretory vesicle membrane; Single-pass type I membrane protein. Perikaryon. Cell projection, axon. Cell junction, synapse. Cell membrane; Single-pass type I membrane protein. Endosome. Detected on neuronal secretory vesicles, but not on synaptic vesicles. Colocalizes with insulin-containing secretory granules (PubMed:25561468). Primarily detected on secretory vesicle membranes. Transiently found at the cell membrane, when secretory vesicles fuse with the cell membrane to release their cargo. Is then endocytosed and recycled t





PMID: 8024693 by Lan M.S., et al. Molecular cloning and identification of a receptor-type protein tyrosine phosphatase, IA-2, from human insulinoma.
PMID: 8144912 by Rabin D.U., et al. Islet cell antigen 512 is a diabetes-specific islet autoantigen related to protein tyrosine phosphatases.