Cell Surface-Binding Antibodies

Cell Surface-Binding Antibodies

Antibodies targeting extracellular epitopes for surface labeling and live-cell detection

Cell surface-binding antibodies are essential tools for studying membrane proteins in their native, physiological context. These in-house produced antibodies recognize extracellular epitopes of cell surface proteins, enabling live-cell labeling, flow cytometry, surface receptor tracking, and functional studies without the need for cell permeabilization.
Alomone Labs offers a comprehensive portfolio of highly specific, well-validated antibodies targeting extracellular domains of ion channels, receptors, and transporters. These antibodies are carefully designed to ensure epitope accessibility, specificity, and reproducibility across advanced imaging and cytometry workflows. Each antibody is rigorously validated in immunohistochemistry (IHC), immunocytochemistry (ICC), western blot (WB), and/or flow cytometry, with matched blocking peptides available to confirm specificity.

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FAQs

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  • The expected molecular weight (MW) listed in the product datasheet is based solely on the size of the target protein’s amino acid sequence. It’s important to remember that many factors can affect the banding pattern of your western blot including: (1) the existence of a splice variant, (2) the quality of the loaded sample, (3) the protein extraction method, and (4) the protein transfer conditions. To achieve accurate results, you may need to systematically adjust the protein extraction method or the protein transfer conditions.

    • If the band’s MW is below the expected MW it could be due to a splice variant with a slightly different MW.
      • Heat the samples at 70°C for 10 min.
      • Increase the transfer time.
    • If the band’s MW is above the expected MW, it could be due to post-translational modifications.
    • In either event, you should use a blocking peptide as a negative control.

  • Some toxins and peptides are soluble in DMSO; you can find this information in the product specification section. For these products, prepare a concentrated stock solution first.

    1. Centrifuge vial (10,000 x g, 5 minutes) before adding solvent.
    2. Dissolve the lyophilized reagent in DMSO. We recommend keeping a concentrated stock solution at 1-10 mM (100-1000X higher than the final working concentration).
    3. Once the peptide is completely dissolved in DMSO, slowly dilute the peptide in pure water (or buffer) to the desired final working concentration.

    Note: We recommend that you maintain a DMSO concentration as low as possible. For cell assays, a final concentration of 0.1–0.5% DMSO (v/v) is considered acceptable. For other experiments, 5% DMSO (v/v) is recommended; adjust this according to your experimental requirements.

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799 Results
  • Anti-TSH Receptor (TSHR) (extracellular) Antibody
    Anti-TSH Receptor (TSHR) (extracellular) Antibody
    A Rabbit Polyclonal Antibody to TSH Receptor
    • Product Code: ATR-006
    • Short Description: A Rabbit Polyclonal Antibody to TSH Receptor
    • Host: Rabbit
    • Label: Unconjugated
    • Reactivity: Human, Rat, Mouse
    • Applications: Indirect flow cytometry, Live cell imaging, Western blot, Immunohistochemistry
    • Target: Thyrotropin receptor, Thyroid-stimulating hormone receptor, TSH-R
  • Anti-TSH Receptor (TSHR) (extracellular)-ATTO Fluor-488 Antibody
    Anti-TSH Receptor (TSHR) (extracellular)-ATTO Fluor-488 Antibody
    A Rabbit Polyclonal Antibody to TSH Receptor Conjugated to the Fluorescent Dye ATTO-488
    • Product Code: ATR-006-AG
    • Short Description: A Rabbit Polyclonal Antibody to TSH Receptor Conjugated to the Fluorescent Dye ATTO-488
    • Host: Rabbit
    • Label: ATTO 488
    • Reactivity: Human, Rat, Mouse
    • Applications: Immunofluorescence, Immunohistochemistry
    • Target: Thyrotropin receptor, Thyroid-stimulating hormone receptor, TSH-R
  • Anti-TYRO3 (extracellular) Antibody
    Anti-TYRO3 (extracellular) Antibody
    A Rabbit Polyclonal antibody to TYRO3 (extracellular)
    • Product Code: ATR-031
    • Short Description: A Rabbit Polyclonal antibody to TYRO3 (extracellular)
    • Host: Rabbit
    • Label: Unconjugated
    • Reactivity: Human, Rat, Mouse
    • Applications: Indirect flow cytometry, Live cell imaging, Western blot
    • Target: Tyrosine-Protein Kinase Receptor TYRO3, Tyrosine-Protein Kinase DTK, Tyrosine-Protein Kinase RSE, Tyrosine-Protein Kinase SKY
  • Anti-VPAC1 (VIPR1) (extracellular) Antibody
    Anti-VPAC1 (VIPR1) (extracellular) Antibody
    A Rabbit Polyclonal Antibody to VPAC1 Receptor
    • Product Code: AVR-001
    • Short Description: A Rabbit Polyclonal Antibody to VPAC1 Receptor
    • Host: Rabbit
    • Label: Unconjugated
    • Reactivity: Human, Rat, Mouse
    • Applications: Indirect flow cytometry, Live cell imaging, Western blot, Immunocytochemistry, Immunofluorescence, Immunohistochemistry
    • Target: VIP and PACAP receptor 1, Vasoactive intestinal polypeptide receptor 1, Pituitary adenylate cyclase-activating polypeptide type II receptor, PACAP type II receptor, PACAP-R2
  • Anti-VPAC1 (VIPR1) (extracellular)-FITC Antibody
    Anti-VPAC1 (VIPR1) (extracellular)-FITC Antibody
    A Rabbit Polyclonal Antibody to VPAC1 Receptor Conjugated to the Fluorescent Dye FITC
    • Product Code: AVR-001-F
    • Short Description: A Rabbit Polyclonal Antibody to VPAC1 Receptor Conjugated to the Fluorescent Dye FITC
    • Host: Rabbit
    • Label: FITC
    • Reactivity: Human, Rat, Mouse
    • Applications: Live cell imaging, Flow cytometry
    • Target: VIP and PACAP receptor 1, Vasoactive intestinal polypeptide receptor 1, Pituitary adenylate cyclase-activating polypeptide type II receptor, PACAP type II receptor, PACAP-R2
  • Anti-VPAC2 (VIPR2) (extracellular) Antibody
    Anti-VPAC2 (VIPR2) (extracellular) Antibody
    A Rabbit Polyclonal Antibody to VPAC2 Receptor
    • Product Code: AVR-002
    • Short Description: A Rabbit Polyclonal Antibody to VPAC2 Receptor
    • Host: Rabbit
    • Label: Unconjugated
    • Reactivity: Human, Rat, Mouse
    • Applications: Indirect flow cytometry, Live cell imaging, Western blot, Immunocytochemistry, Immunofluorescence
    • Target: VIP and PACAP receptor 2, Vasoactive intestinal polypeptide receptor 2, Helodermin-preferring VIP receptor, Pituitary adenylate cyclase-activating polypeptide type III receptor, PACAP type III receptor, PACAP-R3
  • Anti-xCT/SLC7A11 (extracellular) Antibody
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    Anti-xCT/SLC7A11 (extracellular) Antibody
    A Rabbit Polyclonal Antibody to Cystine/Glutamate Transporter (xCT)
    • Product Code: ANT-111
    • Short Description: A Rabbit Polyclonal Antibody to Cystine/Glutamate Transporter (xCT)
    • Host: Rabbit
    • Label: Unconjugated
    • Reactivity: Human, Rat, Mouse
    • Applications: Indirect flow cytometry, Live cell imaging, Western blot, Immunofluorescence, Immunohistochemistry
    • Target: Cystine/glutamate transporter, Amino acid transport system xc-, Solute carrier family 7 member 11, Calcium channel blocker resistance protein CCBR1
  • Anti-xCT/SLC7A11 (extracellular)-FITC Antibody
    Anti-xCT/SLC7A11 (extracellular)-FITC Antibody
    A Rabbit Polyclonal Antibody to Cystine/Glutamate Transporter (xCT) Conjugated to the Fluorescent dye FITC
    • Product Code: ANT-111-F
    • Short Description: A Rabbit Polyclonal Antibody to Cystine/Glutamate Transporter (xCT) Conjugated to the Fluorescent dye FITC
    • Host: Rabbit
    • Label: FITC
    • Reactivity: Human, Rat, Mouse
    • Applications: Flow cytometry
    • Target: Cystine/glutamate transporter, Amino acid transport system xc-, Solute carrier family 7 member 11, Calcium channel blocker resistance protein CCBR1
  • Anti-xCT/SLC7A11 (extracellular)-mFluor™ Violet 450 Antibody
    Anti-xCT/SLC7A11 (extracellular)-mFluor™ Violet 450 Antibody
    A Rabbit Polyclonal Antibody to xCT/SLC7A11 (extracellular) conjugated to the fluorescent dye mFluor™ Violet 450.
    • Product Code: ANT-111-V
    • Short Description: A Rabbit Polyclonal Antibody to xCT/SLC7A11 (extracellular) conjugated to the fluorescent dye mFluor™ Violet 450.
    • Host: Rabbit
    • Label: mFluor™ Violet 450
    • Reactivity: Human, Rat, Mouse
    • Applications: Live cell imaging, Flow cytometry
    • Target: Slc7a11
  • Anti-xCT/SLC7A11 (extracellular)-PE Antibody
    Anti-xCT/SLC7A11 (extracellular)-PE Antibody
    A Rabbit Polyclonal Antibody to xCT/SLC7A11 Conjugated to the Fluorescent Dye R-Phycoerythrin
    • Product Code: ANT-111-PE
    • Short Description: A Rabbit Polyclonal Antibody to xCT/SLC7A11 Conjugated to the Fluorescent Dye R-Phycoerythrin
    • Host: Rabbit
    • Label: R-PE
    • Reactivity: Human, Rat, Mouse
    • Applications: Flow cytometry
    • Target: Cystine/glutamate transporter, Amino acid transport system xc-, Solute carrier family 7 member 11, Calcium channel blocker resistance protein CCBR1
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