Mouse Siglec‑E Alexa Fluor™ Plus 680‑conjugated Antibody

R&D Systems | Catalog # AF5806AFP680

R&D Systems
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Key Product Details

Species Reactivity

Mouse

Applications

Immunohistochemistry, Western Blot

Label

Alexa Fluor Plus 680 (Excitation = 687 nm, Emission = 704 nm)

Antibody Source

Polyclonal Goat IgG
View all Siglec-E Primary Antibodies »

Product Specifications

Specificity

Detects mouse Siglec-E in direct ELISAs and Western blots. In direct ELISAs, less than 3% cross-reactivity with recombinant human (rh) Siglec-6, rhSiglec-7, and rhSiglec-9 is observed.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Applications for Mouse Siglec‑E Alexa Fluor™ Plus 680‑conjugated Antibody

Application
Recommended Usage

Immunohistochemistry

Optimal dilution of this antibody should be experimentally determined.

Western Blot

Optimal dilution of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Formulation

Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

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-E

Siglecs are sialic acid specific I‑type lectins that are characterized by an extracellular domain (ECD) with an N‑terminal Ig‑like V‑set domain followed by varying numbers of Ig‑like C2‑set domains (1, 2). Mouse Siglec‑E, also known as Myeloid Inhibitory Siglec (MIS), is an 80 ‑ 85 kDa member of the CD33‑related subfamily of Siglecs. It consists of a 335 amino acid (aa) ECD with one Ig‑like V‑set domain and two Ig‑like C2‑set domains, a 21 aa transmembrane segment, and a 93 aa cytoplasmic domain that contains two immunoreceptor tyrosine‑based inhibitory motifs (ITIM) (3, 4). Rodent and primate Siglec gene families have significantly diverged, and Siglec‑9 is the most likely human ortholog of mouse Siglec‑E (1). Within the ECD, mouse Siglec‑E shares 56% and 80% aa sequence identity with human Siglec‑9 and rat Siglec‑E, respectively. Siglec‑E is expressed as a heavily N‑glycosylated disulfide‑linked homodimer and shows binding preference for disialic acids in the alpha 2‑8 linkage (3, 5). It is expressed on the surface of several hematopoietic cell types including neutrophils, NK cells, monocytes, peritoneal macrophages and B1 cells, and splenic myeloid dendritic cells and marginal zone B cells (5). Tyrosine phosphorylation of the cytoplasmic ITIMs mediates the association of Siglec‑E with the phosphatases SHP‑1 and SHP‑2 (3, 4). Siglec‑E is up‑regulated and additionally phosphorylated following cellular stimulation by a variety of TLR agonists (6). Siglec‑E signaling negatively regulates the LPS‑induced production of TNF‑ alpha and IL‑6 by macrophages (4, 6). Its up‑regulation in macrophages parallels the development of endotoxin tolerance (6). Siglec‑E recognition of sialylated determinants on virulent T. cruzi contributes to the suppression of dendritic cell IL‑12 p40 production (7).

References

  1. Varki, A. and T. Angata (2006) Glycobiology 16:1R.
  2. Crocker, P.R. et al. (2007) Nat. Rev. Immunol. 7:255.
  3. Yu, Z. et al. (2001) Biochem. J. 353:483.
  4. Ulyanova, T. et al. (2001) J. Biol. Chem. 276:14451.
  5. Zhang, J.Q. et al. (2004) Eur. J. Immunol. 34:1175.
  6. Boyd, C.R. et al. (2009) J. Immunol. 183:7703.
  7. Erdmann, H. et al. (2009) Cell. Microbiol. 11:1600.

Long Name

Sialic Acid Binding Ig-like Lectin E

Alternate Names

SiglecE

Entrez Gene IDs

83382 (Mouse)

Gene Symbol

SIGLECE

UniProt

Q6PJ50

Additional Siglec-E Products

Product Documents for Mouse Siglec‑E Alexa Fluor™ Plus 680‑conjugated Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Mouse Siglec‑E Alexa Fluor™ Plus 680‑conjugated Antibody


This product is provided under an intellectual property license from Life Technologies Corporation. The transfer of this product is conditioned on the buyer using the purchased product solely in research conducted by the buyer, excluding contract research or any fee for service research, and the buyer must not (1) use this product or its components for (a) diagnostic, therapeutic or prophylactic purposes; (b) testing, analysis or screening services, or information in return for compensation on a per-test basis; or (c) manufacturing or quality assurance or quality control, and/or (2) sell or transfer this product or its components for resale, whether or not resold for use in research. For information on purchasing a license to this product for purposes other than as described above, contact Life Technologies Corporation, 5781 Van Allen Way, Carlsbad, CA 92008 USA or outlicensing@thermofisher.com.

For research use only

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Protocols

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FAQs

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