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Key Product Details

Species Reactivity

Human

Applications

Western Blot

Label

Unconjugated

Antibody Source

Monoclonal Mouse IgG2B Clone # 194212

Product Summary for Human Siglec‑7/CD328 Antibody

Immunogen

Mouse myeloma cell line NS0-derived recombinant human Siglec‑7/CD328
Gln19-Gly357 (predicted)
Accession # Q9Y286

Specificity

Detects human Siglec‑7/CD328 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant human Siglec-2, -3, -5, or -9 is observed.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2B

Applications for Human Siglec‑7/CD328 Antibody

Application
Recommended Usage

Western Blot

1 µg/mL
Sample: Recombinant Human Siglec‑7 Fc Chimera (Catalog # 1138-SL)
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Published Applications

Read 4 publications using MAB1138 in the following applications:

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Reconstitution

Reconstitute at 0.5 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Reconstitution Buffer Available:
Size / Price
Qty
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Formulation

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.

Shipping

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: Siglec-7/CD328

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 Siglecs 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-7, also known as adhesion inhibitory receptor module-1 (AIRM-1) and designated CD328, encodes a 467 amino acid (aa) polypeptide with a hydrophobic signal peptide, an N-terminal Ig-like V-type domain, two Ig-like C2-type domains, a transmembrane region and a cytoplasmic tail (5). Siglec-7 exists as a monomer on the cell surface and is expressed on natural killer cells, CD8+ T cells and monocytes (3, 5). It binds equally well to both alpha2,3- and alpha2,6-linked sialic acid (5). The gene encoding Siglec-7 was mapped to chromosome 19q13.3.

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. Nicoll, G. et al. (1999) J. Biol. Chem. 274:34089.

Long Name

Sialic Acid Binding Ig-like Lectin 7

Alternate Names

AIRM1, CD328, QA79, Siglec7

Entrez Gene IDs

27036 (Human)

Gene Symbol

SIGLEC7

UniProt

Additional Siglec-7/CD328 Products

Product Documents for Human Siglec‑7/CD328 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 Siglec‑7/CD328 Antibody

For research use only

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Protocols

Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

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.

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