Human Siglec-9 APC-conjugated Antibody

Clone 191240 was used by HLDA to establish CD designation
Catalog # Availability Size / Price Qty
FAB1139A-025
FAB1139A-100
Human Siglec-9 APC-conjugated Antibody in Data
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Product Details
Citations (5)
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Human Siglec-9 APC-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human Siglec-9 in ELISAs and Western blots. In Western blots, no cross-reactivity with recombinant human Siglec-2, -3, -5, -7 or -10 is observed.
Source
Monoclonal Mouse IgG2A Clone # 191240
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Mouse myeloma cell line NS0-derived recombinant human Siglec-9
Gln18-Gly348 (predicted)
Accession # Q9Y336
Formulation
Supplied in a saline solution containing BSA and Sodium Azide.
Label
Allophycocyanin (Excitation= 620-650 nm, Emission= 660-670 nm)

Applications

Recommended Concentration
Sample
Flow Cytometry
10 µL/106 cells
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.

Data Example

Flow Cytometry Detection of Siglec-9 antibody in Human Blood Granulocytes antibody by Flow Cytometry. View Larger

Detection of Siglec‑9 in Human Blood Granulocytes by Flow Cytometry. Human peripheral blood granulocytes were stained with (A) Mouse Anti-Human Siglec-3/CD33 PE-conjugated Monoclonal Antibody (Catalog # FAB1137P), and (B) Mouse Anti-Human Siglec-9 APC-conjugated Monoclonal Antibody (Catalog # FAB1139A, filled histogram) or isotype control antibody (Catalog # IC003A, open histogram). View our protocol for Staining Membrane-associated Proteins.

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Preparation and Storage

Shipping
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.

Background: Siglec-9

Siglecs(1) (sialic acid binding Ig-like lectins) are I-type (Ig-type) lectins belonging to the Ig superfamily. They are characterized by an N-terminal Ig-like V-type domain which mediates sialic acid binding, followed by varying numbers of Ig-like C2-type domains (1, 2). Eleven human Siglecs have been cloned and characterized. They are sialoadhesin/CD169/Siglec-1, CD22/Siglec-2, CD33/Siglec-3, Myelin-Associated Glycoprotein (MAG/Siglec-4a) and Siglec-5 to -11 (1‑4). To date, no Siglec has been shown to recognized any cell surface ligand other than sialic acids, suggesting that interactions with glycans containing this carbohydrate are important in mediating the biological functions of Siglecs. Siglecs 5 to 11 share a high degree of sequence similarity with CD33/Siglec-3 both in their extracellular and intracellular regions. They are collectively referred to as CD33-related Siglecs. One remarkable feature of the CD33-related Siglecs is their differential expression pattern within the hematopoietic system (2, 3). This fact, together with the presence of two conserved immunoreceptor tyrosine-based inhibition motifs (ITIMs) in their cytoplasmic tails, suggests that CD33-related Siglecs are involved in the regulation of cellular activation within the immune system.

The cDNA of human Siglec-9 encodes a 463 amino acid (aa) polypeptide with a hydrophobic signal peptide, an N-terminal Ig-likeV-type domain, two Ig-like C2-type domains, a transmembrane region and a cytoplasmic tail (5, 6). In peripheral blood leukocytes, Siglec-9 is expressed on neutrophils, monocytes, a fraction of NK cells, B cells, and a minor subset of CD8+ T cells (5). It binds equally well to both 2,3- and 2,6-linked sialic acid (5, 6). Siglec-9 is closely related to Siglec-7, and they share ~80% amino acid sequence identity. The gene encoding siglec-9 was mapped to chromosome 19q13.4.

References
  1. Crocker, P.R. et al. (1998) Glycobiology 8:v.
  2. Crocker, P.R. and A. Varki (2001) Trends Immunol. 22:337.
  3. Crocker, P.R. and A. Varki (2001) Immunology 103:137.
  4. Angata, T. et al. (2002) J. Biol. Chem. 277:24466.
  5. Zhang, J.Q. et al. (2000) J. Biol. Chem. 275:22121.
  6. Angata, T. et al. (2000) J. Biol. Chem. 275:22127.
Long Name
Sialic Acid Binding Ig-like Lectin 9
Entrez Gene IDs
27180 (Human)
Alternate Names
CD329; CDw329; FOAP-9; OBBP-Like; Protein FOAP-9; sialic acid binding Ig-like lectin 9; sialic acid-binding Ig-like lectin 9; Siglec9; Siglec-9

Product Datasheets

Citations for Human Siglec-9 APC-conjugated 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.

5 Citations: Showing 1 - 5
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  1. Siglec-9 regulates an effector memory CD8+ T-cell subset that congregates in the melanoma tumor microenvironment
    Authors: Q Haas, K Frias Boli, C Jandus, C Schneider, C Simillion, MA Stanczak, M Haubitz, SM Seyed Jafa, A Zippelius, GM Baerlocher, H Läubli, RE Hunger, P Romero, HU Simon, S von Gunten
    Cancer Immunol Res, 2019;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry
  2. Phenotypic and functional consequences of different isolation protocols on skin mononuclear phagocytes
    Authors: RA Botting, KM Bertram, H Baharlou, KJ Sandgren, J Fletcher, JW Rhodes, H Rana, TM Plasto, XM Wang, JJ Lim, L Barnouti, MP Kohout, T Papadopoul, S Merten, N Olbourne, AL Cunningham, M Haniffa, AN Harman
    J. Leukoc. Biol, 2017;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry
  3. Staphylococcus aureus Staphopain A inhibits CXCR2-dependent neutrophil activation and chemotaxis.
    EMBO J., 2012;31(17):3607-19.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry
  4. CMV drives clonal expansion of NKG2C+ NK cells expressing self-specific KIRs in chronic hepatitis patients.
    Authors: Beziat V, Dalgard O, Asselah T, Halfon P, Bedossa P, Boudifa A, Hervier B, Theodorou I, Martinot M, Debre P, Bjorkstrom NK, Malmberg KJ, Marcellin P, Vieillard V
    Eur. J. Immunol., 2012;42(2):447-57.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry
  5. Expression profiles of novel cell surface molecules on B-cell subsets and plasma cells as analyzed by flow cytometry.
    Authors: Llinas L, Lazaro A, de Salort J, Matesanz-Isabel J, Sintes J, Engel P
    Immunol. Lett., 2011;134(2):113-21.
    Species: Human
    Sample Types: Whole Cells
    Applications: Flow Cytometry

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