Siglec-11 Antibody [Biotin]

• Reactivity: Hu
• Applications: WB, Flow
• Clonality: Polyclonal
• Host: Goat
• Conjugate: Biotin
• Concentration: LYOPH

Siglec-11 Antibody [Biotin] Summary

• 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.
• Source: N/A
• Isotype: IgG
• Clonality: Polyclonal
• Host: Goat
• Gene: SIGLEC11
• Purity Statement: Antigen Affinity-purified

Applications/Dilutions

• Dilutions:
  • Flow Cytometry 2.5 ug/10^6 cells
  • Western Blot 0.1 ug/mL
• Readout System:
  • Streptavidin Native Protein NBP2-29367
  • Streptavidin Native Protein NBP2-29370
  • Streptavidin Native Protein NBP2-29371

Packaging, Storage & Formulations

• 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.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
• Preservative: No Preservative
• Concentration: LYOPH
• Reconstitution Instructions: Reconstitute at 0.2 mg/mL in sterile PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Siglec-11 Antibody [Biotin]

• sialic acid binding Ig-like lectin 11
• sialic acid-binding Ig-like lectin 11
• Sialic acid-binding lectin 11
• Siglec11
• Siglec-11

Background

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 alpha 2-8 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).

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.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for Siglec-11 Antibody (BAF3258)(1)

Publication using BAF3258

• Wang X, Chow R, Deng L, Anderson D, Weidner N, Godwin AK, Bewtra C, Zlotnik A, Bui J, Varki A, Varki N Expression of Siglec-11 by human and chimpanzee ovarian stromal cells, with uniquely human ligands: implications for human ovarian physiology and pathology. Glycobiology, 2011-04-04;21(8):1038-48. 2011-04-04 [PMID: 21467073] (IHC-P, Human)

Bioinformatics

• Gene Symbol: SIGLEC11
• Uniprot:
  • Q96RL6()