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Key Product Details

Species Reactivity



Agonist Activity, CyTOF-reported, Flow Cytometry, Immunocytochemistry, Immunohistochemistry, Western Blot



Antibody Source

Monoclonal Mouse IgG2B Clone # 195314

Product Summary for Human NKp46/NCR1 Antibody


Mouse T cell hybridoma transfected with human NKp46/NCR1


Detects human NKp46/NCR1 in direct ELISAs and Western blots.







Scientific Data Images for Human NKp46/NCR1 Antibody

NKp46/NCR1 antibody in NK-92 Human Cell Line and Human PBMCs by Immunocytochemistry (ICC).

NKp46/NCR1 in NK-92 Human Cell Line and Human PBMCs.

NKp46/NCR1 was detected in immersion fixed NK-92 human natural killer lymphoma cell line (left panel, positive stain) and human peripheral blood mononuclear cells (PBMCs; right panel, negative stain) using Mouse Anti-Human NKp46/NCR1 Monoclonal Antibody (Catalog # MAB1850) at 25 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
NKp46/NCR1 antibody in Human Tonsil by Immunohistochemistry (IHC-P).

NKp46/NCR1 in Human Tonsil.

NKp46/NCR1 was detected in immersion fixed paraffin-embedded sections of human tonsil using Mouse Anti-Human NKp46/NCR1 Monoclonal Antibody (Catalog # MAB1850) at 5 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Mouse IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC001). Before incubation with the primary antibody, tissue was subjected to heat-induced epitope retrieval using Antigen Retrieval Reagent-Basic (Catalog # CTS013). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to natural killer cells in germinal center. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Detection of NKp46/NCR1 in Human PBMCs by Flow Cytometry.

Human peripheral blood mononuclear cells (PBMCs) were stained with (A) Mouse Anti-Human NKp46/NCR1 Monoclonal Antibody (Catalog # MAB1850) or (B) Mouse IgG2B Isotype Control (MAB0041) followed by Goat anti-Mouse IgG APC-conjugated Secondary Antibody (F0101B) and Rabbit Anti-Human NCAM-1/CD56 PE-conjugated Monoclonal Antibody (FAB24086P). Staining was performed using our Staining Membrane-associated Proteins protocol.

Applications for Human NKp46/NCR1 Antibody

Recommended Usage

Agonist Activity

Measured by its ability to induce IFN-gamma secretion by NK-92 human natural killer lymphoma cells.
The ED50 for this effect is typically ≤ 1 μg/mL.


Horowitz, A. et al. Sci. Transl. Med. (2013) 208ra145. Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

0.25 µg/106 cells
Sample: Human whole blood CD56+ natural killer cells


8-25 µg/mL
Sample: Immersion fixed NK‑92 human natural killer lymphoma cell line and human peripheral blood mononuclear cells (PBMCs)


5-25 µg/mL
Sample: Immersion fixed paraffin-embedded sections of human tonsil

Western Blot

1 µg/mL
Sample: Recombinant Human NKp46/NCR1 Fc Chimera (Catalog # 1850-NK)
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 7 reviews rated 4 using MAB1850 in the following applications:

Published Applications

Read 32 publications using MAB1850 in the following applications:

Formulation, Preparation, and Storage


Protein A or G purified from hybridoma culture supernatant

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.


Reconstitute at 0.5 mg/mL in sterile PBS.

Reconstitution Buffer Available:
Size / Price


Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.


The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C

Stability & Storage

Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: NKp46/NCR1

NKp46, along with NKp30 and NKp44, are activating receptors that have been collectively termed the natural cytotoxicity receptors (NCR) (1). These receptors lack significant sequence homology to one another. They are expressed almost exclusively by NK cells and play a major role in triggering some of the key lytic activities of NK cells. The CD56dimCD16+ subpopulation that makes up the majority of NK cells in the peripheral blood and spleen expresses NKp46 in both resting and activated states (2). The main NK cell population of the lymph node (CD56brightCD16-) expresses low levels of NKp46 in resting cells, but expression is up-regulated by IL-2. NKp46 is a type I transmembrane protein with two extracellular Ig-like domains followed by a short stalk region, a transmembrane domain containing a positively charged amino acid residue, and a short cytoplasmic tail. Through its positive charge in the transmembrane domain, NKp46 associates with the ITAM‑bearing signal adapter proteins, CD3 zeta and Fc epsilonR1 gamma, which are able to form disulfide-linked homodimers and heterodimers (3, 8). Studies with neutralizing antibodies indicate that the three NCRs are primarily responsible for triggering the NK-mediated lysis of many human tumor cell lines. Blocking any of the NCRs individually resulted in partial inhibition of tumor cell lysis, but nearly complete inhibition of lysis was observed if all three receptors were blocked simultaneously (4). NKp46 has also been implicated in recognition of virus-infected cells through its capacity to bind to viral hemagglutinins (5‑7). Human NKp46 shares 58% and 59% amino acid sequence identity with the mouse and rat proteins, respectively.


  1. Moretta, L. and A. Moretta (2004) EMBO J. 23:255. 
  2. Ferlazzo, G. et al. (2004) J. Immunol. 172:1455.
  3. Augugliaro, R. et al. (2003) Eur. J. Immunol. 33:1235. 
  4. Pende, D. et al. (1999) J. Exp. Med. 190:1505.
  5. Arnon, T. et al. (2004) Blood 103:664.
  6. Arnon, T. et al. (2001) Eur. J. Immunol. 31:2680.
  7. Mandelboim, O. et al. (2001) Nature 409:1055.
  8. Moretta, A. et al. (2001) Annu. Rev. Immunol. 19:197.

Alternate Names

CD335, Ly94, MAR-1, NCR1

Entrez Gene IDs

9437 (Human); 17086 (Mouse); 100141419 (Porcine); 102115479 (Cynomolgus Monkey)

Gene Symbol


Product Documents for Human NKp46/NCR1 Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human NKp46/NCR1 Antibody

For research use only


Reconstitution Calculator

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