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Human Siglec-11 Biotinylated Antibody

Bio-Techne includes R&D Systems | Catalog # BAF3258

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BAF3258

Key Product Details

Species Reactivity

Validated:

Human

Applications

Flow Cytometry, Western Blot

Label

Biotin

Antibody Source

Polyclonal Goat IgG

Product Summary for Human Siglec-11 Biotinylated Antibody

Immunogen

Chinese hamster ovary cell line CHO-derived recombinant human Siglec-11
Asn17-His543 (Glu84Ala, Lys145Gln)
Accession # Q96RL6

Specificity

Detects human Siglec‑11 in Western blots. In Western blots, approximately 50% cross-reactivity with recombinant human (rh) Siglec-10 is observed and less than 5% cross-reactivity with rhSiglec-2, -3, -6, -7, -9 and recombinant mouse Siglec-F is observed.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Applications for Human Siglec-11 Biotinylated Antibody

Application
Recommended Usage

Flow Cytometry

2.5 µg/106 cells
Sample: Human peripheral blood monocytes

Western Blot

0.1 µg/mL
Sample: Recombinant Human Siglec-11 Fc Chimera (Catalog # 3258-SL)
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Published Applications

Read 1 publication using BAF3258 in the following applications:

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS.

Reconstitution Buffer Available:
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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

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-11

Siglecs (sialic acid binding Ig-like lectins) are I-type lectins that belong to the immunoglobulin superfamily. They are characterized by an N‑terminal Ig-like V-set domain which mediates sialic acid binding, followed by a varying numbers of Ig-like C2-set domains. Siglecs‑3 and 5‑13 constitute the CD33/Siglec-3 related group, which are defined by their sequence homology and differential expression in the ematopoietic system (1‑3). Mature human Siglec-11 consists of a 534 amino acid (aa) extracellular domain (ECD), a 23 aa transmembrane segment, and a 114 aa cytoplasmic domain. The ECD contains one Ig-like V-set domain, and three Ig-like C2-set domains. The cytoplasmic domain contains two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) (4). A splice variant of Siglec-11 has a deletion of nearly 100 aa in the extracellular juxtamembrane region. Among siglecs, the ECD of Siglec-11 is most closely related to that of Siglec-10 (82% aa sequence identity). The cytoplasmic domains of these proteins are only 20% identical. Siglec-11 is closely related to the pseudogenes Siglec-14 and Siglec-16 (4, 5). Human Siglec-11 shares 90%‑96% aa sequence identity with Siglec-11 from great apes. Rodent orthologs of Siglec-11 have not been identified. In human, Siglec-11 is expressed in tissue macrophages, brain microglia, and inflammatory site monocytes (4). Strong microglial expression is specific to humans, as it is less prominent or absent in chimpanzees and orangutans (5). Siglec-11 forms 180 kDa disulfide-linked dimers. It shows a strong binding preference for sialic acid in alpha2-8 linkage which is unusual for siglecs (4). A conserved arginine in the Ig-like V-set domain only partially contributes to Siglec-11 ligand recognition, in contrast to its being required in other siglecs (4). Tyrosine phosphorylation of the cytoplasmic region of Siglec-11 promotes association with the phosphatases SHP-1 and SHP-2 (4).

References

  1. Varki, A. and T. Angata (2006) Glycobiology 16:1R.
  2. Crocker, P.R. (2005) Curr. Opin. Pharmacol. 5:431.
  3. Crocker, P.R. (2002) Curr. Opin. Struct. Biol. 12:609.
  4. Angata, T. et al. (2002) J. Biol. Chem. 277:24466.
  5. Hayakawa, T. et al. (2005) Science 309:1693.

Long Name

Sialic Acid Binding Ig-like Lectin 11

Alternate Names

Siglec11

Entrez Gene IDs

114132 (Human)

Gene Symbol

SIGLEC11

UniProt

Additional Siglec-11 Products

Product Documents for Human Siglec-11 Biotinylated 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-11 Biotinylated Antibody

For research use only

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