Rabbit polyclonal primary
PTP1B Antibody (ER1802-83)
Synthetic peptide corresponding to n-terminal human ptp1b.
Mouse prostate tissue, SiHa, HUVEC, LOVO, human tonsil tissue, human colon cancer tissue, human kidney tissue, human placenta tissue.
Store at +4C after thawing. Aliquot store at -20C. Avoid repeated freeze / thaw cycles.
1*PBS (pH7.4), 0.2% BSA, 50% Glycerol. Preservative: 0.05% Sodium Azide.
Peptide affinity purified.
Tyrosine-protein phosphatase non-receptor type 1
PTP-1B, PTPN1, PTP1B
Belongs to the protein-tyrosine phosphatase family. Non-receptor class 1 subfamily.
Expressed in keratinocytes (at protein level).
Oxidized on Cys-215; the Cys-SOH formed in response to redox signaling reacts with the alpha-amido of the following residue to form a sulfenamide cross-link, triggering a conformational change that inhibits substrate binding and activity. The active site can be restored by reduction.; Ser-50 is the major site of phosphorylation as compared to Ser-242 and Ser-243. Activated by phosphorylation at Ser-50.; S-nitrosylation of Cys-215 inactivates the enzyme activity.; Sulfhydration at Cys-215 following endoplasmic reticulum stress inactivates the enzyme activity, promoting EIF2AK3/PERK activity.
Endoplasmic reticulum membrane; Peripheral membrane protein; Cytoplasmic side. Note=Interacts with EPHA3 at the cell membrane.
Tyrosine-protein phosphatase which acts as a regulator of endoplasmic reticulum unfolded protein response. Mediates dephosphorylation of EIF2AK3/PERK; inactivating the protein kinase activity of EIF2AK3/PERK. May play an important role in CKII- and p60c-src-induced signal transduction cascades. May regulate the EFNA5-EPHA3 signaling pathway which modulates cell reorganization and cell-cell repulsion. May also regulate the hepatocyte growth factor receptor signaling pathway through dephosphorylation of MET.