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PTP1B / PTPN1 Antibody, Rabbit PAb

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    Human PTPN1 Antibody Product Information
    Immunogen:Recombinant Human PTP1B / PTPN1 protein (Catalog#10304-H07E)
    Clone ID:
    Ig Type:Rabbit IgG
    Concentration:
    Endotoxin:
    Formulation:0.2 μm filtered solution in PBS with 5% trehalose
    Preparation:Produced in rabbits immunized with purified, recombinant Human PTP1B / PTPN1 (rh PTP1B / PTPN1; Catalog#10304-H07E; NP_002818.1; Glu 2-Asn 321). Total IgG was purified by Protein A affinity chromatography.
    Other PTPN1 Antibody Products
    PTP1B / PTPN1 Background

    PTP1B, also known as PTPN1, belongs to the protein-tyrosine phosphatase (PTP) family. PTPs catalyze the hydrolysis of the phosphate monoesters specifically on tyrosine residues. Members of the PTP family share a highly conserved catalytic motif, which is essential for the catalytic activity. PTPs are known to be signaling molecules that regulate a variety of cellular processes including cell growth, differentiation, mitotic cycle, and oncogenic transformation. PTP1B contains 1 tyrosine-protein phosphatase domain and is expressed in many tissues. PTP1B is localized to the cytoplasmic face of the endoplasmic reticulum. PTP1B was also reported to dephosphorylate epidermal growth factor receptor kinase, as well as JAK2 and TYK2 kinases, which implicated the role of PTP1B in cell growth control, and cell response to IFN stimulation.

    Human PTP1B / PTPN1 References
  • Frangioni JV, et al. (1992) The nontransmembrane tyrosine phosphatase PTP-1B localizes to the endoplasmic reticulum via its 35 amino acid C-terminal sequence. Cell. 68(3):545-60.
  • Zhu S, et al. (2007) PTP1B contributes to the oncogenic properties of colon cancer cells through Src activation. Cancer Res. 67(21):10129-37.
  • Aoki N, et al. (2000) A cytosolic protein-tyrosine phosphatase PTP1B specifically dephosphorylates and deactivates prolactin-activated STAT5a and STAT5b. J Biol Chem. 275(50):39718-26.
  • Stuible M, et al. (2008) PTP1B regulates cortactin tyrosine phosphorylation by targeting Tyr446. J Biol Chem. 283(23):15740-6.
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