DC-SIGN/CD209 Antibody (120507) [Fluorescein]

• Applications: Flow
• Clone: 120507
• Clonality: Monoclonal
• Host: Mouse
• Conjugate: Fluorescein

DC-SIGN/CD209 Antibody (120507) [Fluorescein] Summary

• Additional Information: Clone 120507 was used by HLDA to establish CD designation
• Immunogen: NIH-3T3 mouse embryonic fibroblast cell line transfected with human DC‑SIGN/CD209
• Marker: Dendritic Cell Marker
• Specificity: Detects human DC‑SIGN/CD209 on transfected NIH/3T3 cells and on monocyte derived dendritic cells. Does not react with parental mouse cells or irrelevant transfectants, such as human DC-SIGN2.
• Source: N/A
• Isotype: IgG2b
• Clonality: Monoclonal
• Host: Mouse
• Gene: CD209
• Purity Statement: Protein A or G purified from hybridoma culture supernatant

Packaging, Storage & Formulations

• Storage: Protect from light. Do not freeze.
  • 12 months from date of receipt, 2 to 8 °C as supplied.
• Buffer: Supplied in a saline solution containing BSA and Sodium Azide.
• Preservative: Sodium Azide

Notes

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

Background

Human DC-Sign (dendritic cell-specific ICAM-3 grabbing nonintegrin; also known as CD209) is a member of the chromosome 19 C-type lectin family that includes DC-SIGN, DC-SIGN-related protein, CD23 and LSECtin (1). DC-SIGN was initially reported to be a 46 kDa, 404 amino acid (aa) type II transmembrane protein that contained a 40 aa cytoplasmic N-terminus, a 21 aa transmembrane segment, and a 343 aa extracellular C-terminus (2). The extracellular region contains a distal, 115 aa Ca⁺⁺-dependent carbohydrate-binding lectin domain and a membrane-proximal linker segment that is composed of seven 23 aa repeats (2, 3). The lectin domain is believed to preferably bind mannose, either within the context of ICAM-3 (on T cells) or ICAM-2 (on endothelial cells) (2, 4, 5). DC-SIGN expression appears to be limited to dendritic cells (DC) and macrophages (6), and DC interaction with the ICAMs both aids DC cell trafficking and immunological synapse formation (7). Since the original report on DC-SIGN, multiple splice forms have been discovered, generating both membrane-bound and soluble forms (3). There are eight type A isoforms, all of which begin with the same 15 aa of exon 1a. Four contain the transmembrane region of exon II, and four do not (i.e., are soluble). Among these eight type A isoforms, only three retain the entire 343 aa found in the full length form described in reference #2 (the full length form is referred to as type I mDC-SIGN1A) (3). Five additional isoforms utilize an alternate start site, and these are referred to as type B isoforms. These all show a 35 aa cytoplasmic domain. One also has a transmembrane segment; four do not. Two of the five contain full, unspliced extracellular regions (3). All of this suggests enormous complexity in DC-SIGN biology. DC-SIGN is not well conserved across species. Human and mouse show little overall aa identity. In the lectin domain, however, human DC-SIGN shares 68% aa identity with mouse DC-SIGN (8). Human and rhesus monkey DC-SIGN share 91% aa identity over the entire extracellular region (8). A detailed description of the additional properties of this monoclonal antibody (MAB161) have been published (9, 10).

1. Liu, W. et al. (2004) J. Biol. Chem. 279:18748.
2. Curtis, B.M. et al. (1992) Proc. Natl. Acad. Sci. USA 89:8356.
3. Mummidi, S. et al. (2001) J. Biol. Chem. 276:33196.
4. Su, S.V. et al. (2004) J. Biol. Chem. 279:19122.
5. Cambi, A. et al. (2005) Cell. Microbiol. 7:481.
6. Serrano-Gomez, D. et al. (2004) J. Immunol. 173:5635.
7. Geijtenbeek, T.B.H. and Y. van Kooyk (2003) Curr. Top. Microbiol. Immunol. 276:32.
8. Baribaud, F. et al. (2001) J. Virol. 75:10281.
9. Wu, L. et al. (2002) J. Virol. 76:5905.
10. Baribaud, F. et al. (2002) J. Virol.76:9135.

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.

Bioinformatics

• Gene Symbol: CD209