Validated using a knockout cell line

Recombinant Anti-PTP1B antibody [EPR1836(2)] - BSA and Azide free (ab232050)


  • Product name

    Anti-PTP1B antibody [EPR1836(2)] - BSA and Azide free
    See all PTP1B primary antibodies
  • Description

    Rabbit monoclonal [EPR1836(2)] to PTP1B - BSA and Azide free
  • Host species

  • Species reactivity

    Reacts with: Human
  • Immunogen

    Synthetic peptide within Human PTP1B aa 350-450. The exact sequence is proprietary.
    Database link: P18031

  • Positive control

    • WB: Wild-type HAP1 cell lysate; Jurkat and MCF7 cell lysate.
  • General notes

    Ab232050 is the carrier-free version of ab133244. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.


    Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.

    Use our conjugation kits  for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

    ab232050 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.

    Maxpar® is a trademark of Fluidigm Canada Inc.??

    Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.

    This product is a recombinant rabbit monoclonal antibody.



  • Function

    May play an important role in CKII- and p60c-src-induced signal transduction cascades.
  • Sequence similarities

    Belongs to the protein-tyrosine phosphatase family. Non-receptor class 1 subfamily.
    Contains 1 tyrosine-protein phosphatase domain.
  • Post-translational

    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 4-amino-3-isothiazolidinone serine cross-link, triggering a conformational change that inhibits substrate binding and activity. The active site can be restored by reduction.
  • Cellular localization

    Endoplasmic reticulum membrane.
  • Information by UniProt
  • Database links

  • Alternative names

    • PTP1B antibody
    • Non receptor tyrosine phosphatase 1 antibody
    • Protein phosphotyrosylphosphatase 1B antibody
    • Protein tyrosine phosphatase 1B antibody
    • Protein tyrosine phosphatase non receptor type 1 antibody
    • Protein tyrosine phosphatase placental antibody
    • Protein-tyrosine phosphatase 1B antibody
    • PTN1_HUMAN antibody
    • PTP 1B antibody
    • PTP-1B antibody
    • PTPN 1 antibody
    • PTPN1 antibody
    • Tyrosine protein phosphatase non receptor type 1 antibody
    • Tyrosine-protein phosphatase non-receptor type 1 antibody
    see all


  • Lane 1: Wild-type HAP1 cell lysate (20 µg)
    Lane 2: PTP1B knockout HAP1 cell lysate (20 µg)
    Lane 3: Jurkat cell lysate (20 µg)
    Lane 4: MCF7 cell lysate (20 µg)
    Lanes 1 - 4: Merged signal (red and green). Green - ab133244 observed at 54 kDa. Red - loading control, ab8245, observed at 37 kDa.
    ab133244 was shown to recognize PTP1B when PTP1B knockout samples were used, along with additional cross-reactive bands. Wild-type and PTP1B knockout samples were subjected to SDS-PAGE. ab133244 and ab8245 (loading control to GAPDH) were diluted 1/1,000 and 1/2,000 respectively and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10,000 dilution for 1 hour at room temperature before imaging.

    This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab133244).


ab232050 has not yet been referenced specifically in any publications.

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