Human S100A8/S100A9 Heterodimer Antibody

Recombinant Monoclonal Antibody
Catalog # Availability Size / Price Qty
S100A8/S100A9 Heterodimer in HL60 Human Cell Line.
3 Images
Product Details
Citations (2)
Supplemental Products
Reviews (1)

Human S100A8/S100A9 Heterodimer Antibody Summary

Species Reactivity
Detects human S100A8/S100A9 in direct ELISAs. In ELISAs, it detects recombinant human S100A8/S100A9 heterodimer but it does not detect recombinant human S100A8 or S100A9 monomers.
Recombinant Monoclonal Rabbit IgG Clone # 1099F
Protein A or G purified from cell culture supernatant
E. coli-derived recombinant human S100A8/S100A9 heterodimer
Met1-Glu93 (S100A8) & Thr2-Pro114 (S100A9)
Accession # P05109 (S100A8) and P06702 (S100A9)
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.


Recommended Concentration
10-25 µg/mL
See below
Dual RNAscope ISH-IHC
5-25 µg/mL
See below
3-25 µg/mL
See below

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Scientific Data

Immunocytochemistry S100A8/S100A9 Heterodimer antibody in HL60 Human Cell Line by Immunocytochemistry (ICC). View Larger

S100A8/S100A9 Heterodimer in HL60 Human Cell Line. S100A8/S100A9 Heterodimer was detected in immersion fixed HL60 human promyelocytic leukemia cell line using Rabbit Anti-Human S100A8/S100A9 Heterodimer Monoclonal Antibody (Catalog # MAB45701) at 3 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Rabbit IgG Secondary Antibody (red; Catalog # NL004) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm (punctate). View our protocol for Fluorescent ICC Staining of Non-adherent Cells.

Immunohistochemistry S100A8/S100A9 Heterodimer antibody in Human Lung Cancer Tissue by Immunohistochemistry (IHC-P). View Larger

S100A8/S100A9 Heterodimer in Human Lung Cancer Tissue. S100A8/S100A9 Heterodimer was detected in immersion fixed paraffin-embedded sections of human lung cancer tissue using Rabbit Anti-Human S100A8/S100A9 Heterodimer Monoclonal Antibody (Catalog # MAB45701) at 10 µg/mL for 1 hour at room temperature followed by incubation with the Anti-Rabbit IgG VisUCyte™ HRP Polymer Antibody (Catalog # VC003). Tissue was stained using DAB (brown) and counterstained with hematoxylin (blue). Specific staining was localized to cytoplasm in tumor cells. View our protocol for IHC Staining with VisUCyte HRP Polymer Detection Reagents.

Dual RNAscope ISH-IHC Compatible S100A8/S100A9 antibody in Human Metastatic Tonsil Cancer Tissue Using Dual RNAscope<sup>®</sup>ISH and IHC. View Larger

S100A8/S100A9 in Human Metastatic Tonsil Cancer Tissue Using Dual RNAscope®ISH and IHC. Syndecan-1/CD138 mRNA was detected (top image) in formalin-fixed paraffin-embedded tissue sections of human metastatic tonsil cancer tissue probed with ACD RNAScope®Probe (Catalog # 425271) and stained using ACD RNAscope®2.5 HD Duplex Detection Reagents (red, Catalog # 322500). Adjacent tissue section (bottom image) was processed for immunohistochemistry using R&D Systems Rabbit Anti-Human S100A8/S100A9 Monoclonal Antibody (Catalog# MAB45701) at 5 ug/mL for 1 hour at room temperature followed by incubation with the Anti-Rabbit IgG VisUCyte HRP Polymer Antibody (R&D Systems, Catalog # VC003) and DAB chromogen (brown). Tissues were counterstained with hematoxylin (blue).

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile 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: S100A8/S100A9 Heterodimer

S100A8 (also known as MRP8, Calgranulin A, and CP-10) and S100A9 (also known as MRP14 and Calgranulin B) are pro-inflammatory members of the S100 family of secreted calcium binding proteins (1, 2). They are up-regulated in neutrophils and monocytes at sites of inflammation (e.g. psoriasis, rheumatoid arthritis, cardiac ischemia) and are present at elevated concentrations in rheumatoid arthritis synovial fluid (3-5). The 10 kDa human S100A8 and 14 kDa S100A9 each contain two EF‑hand calcium binding motifs. Human S100A8 shares 57% and 61% amino acid (aa) sequence identity with mouse and rat S100A8, respectively. Human S100A9 shares 57% and 62% amino acid sequence identity with mouse and rat S100A9, respectively (6, 7). In the presence of calcium or zinc, S100A8 and S100A9 associate into non-covalent homodimers and 34-35 kDa heterodimers with each other (8-10). The heterodimer additionally binds and sequesters manganese, thereby restricting the growth of Mn-dependent bacteria (11). The S100A8/A9 heterodimer exhibits functions beyond those performed by the individual proteins. These include binding to fatty acids such as arachidonic acid and promoting astrocyte proliferation (3, 12). S100A8, S100A9, and the heterodimer each promote neutrophil infiltration into sites of inflammation and inflammatory cytokine production by monocytes (4, 5, 9).

  1. Averill, M.M. et al. (2012) Arterioscler. Thromb. Vasc. Biol. 32:223.
  2. Vogl, T. et al. (2012) Int. J. Mol. Sci. 13:2893.
  3. Siegenthaler, G. et al. (1997) J. Biol. Chem. 272:9371.
  4. Sunahori, K. et al. (2006) Arthritis Res. Ther. 8:R69.
  5. Volz, H.C. et al. (2012) Basic Res. Cardiol. 107:250.
  6. Odink, K. et al. (1987) Nature 330:80.
  7. Dorin, J.R. et al. (1987) Nature 326:614.
  8. Teigelkamp, S. et al. (1991) J. Biol. Chem. 266:13462.
  9. Ryckman, C. et al. (2003) J. Immunol. 170:3233.
  10. Vogl, T. et al. (2006) Biochim. Biophys. Acta 1763:1298.
  11. Damo, S.M. et al. (2013) Proc. Natl. Acad. Sci. USA 110:3841.
  12. Ryu, M-J. et al. (2012) J. Biol. Chem. 287:22948.
Long Name
S100 Calcium Binding Protein A8/S100 Calcium Binding Protein A9
Entrez Gene IDs
6279 (Human)
Alternate Names
Calprotectin; S100A8/S100A9 Heterodimer

Product Datasheets

You must select a language.


Product Specific Notices

* Contains <0.1% Sodium Azide, which is not hazardous at this concentration according to GHS classifications. Refer to SDS for additional information and handling instructions.

Citations for Human S100A8/S100A9 Heterodimer Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

2 Citations: Showing 1 - 2
Filter your results:

Filter by:

  1. Giant worm-shaped ESCRT scaffolds surround actin-independent integrin clusters
    Authors: Stempels FC, Jiang M, Warner HM et al.
    The Journal of cell biology
  2. S100A8-mediated metabolic adaptation controls HIV-1 persistence in macrophages in vivo
    Authors: F Real, A Zhu, B Huang, A Belmellat, A Sennepin, T Vogl, C Ransy, M Revol, R Arrigucci, A Lombès, J Roth, ML Gennaro, F Bouillaud, S Cristofari, M Bomsel
    Nature Communications, 2022-10-11;13(1):5956.
    Species: Human
    Sample Types: Whole Cells
    Applications: ICC


No product specific FAQs exist for this product, however you may

View all Antibody FAQs

Reviews for Human S100A8/S100A9 Heterodimer Antibody

Average Rating: 5 (Based on 1 Review)

5 Star
4 Star
3 Star
2 Star
1 Star

Have you used Human S100A8/S100A9 Heterodimer Antibody?

Submit a review and receive an Amazon gift card.

$25/€18/£15/$25CAN/¥75 Yuan/¥1250 Yen for a review with an image

$10/€7/£6/$10 CAD/¥70 Yuan/¥1110 Yen for a review without an image

Submit a Review

Filter by:

Human S100A8/S100A9 Heterodimer Antibody
By Anonymous on 10/23/2022
Application: IHC Sample Tested: Brain tissue Species: Human