Human CD83 Alexa Fluor® 594-conjugated Antibody

Catalog # Availability Size / Price Qty
FAB17741T-100UG
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Human CD83 Alexa Fluor® 594-conjugated Antibody Summary

Species Reactivity
Human
Specificity
Detects human CD83 in direct ELISAs.
Source
Monoclonal Mouse IgG1 Clone # 982502
Purification
Protein A or G purified from hybridoma culture supernatant
Immunogen
Human embryonic kidney cell line HEK293-derived recombinant human CD83
Met1-Ala143
Accession # Q01151
Formulation
Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.
Label
Alexa Fluor 594

Applications

Recommended Concentration
Sample
Flow Cytometry
0.25-1 µg/106 cells
Human mature monocyte-derived dendritic cells

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

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Preparation and Storage

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: CD83

Human CD83 is a 40‑50 kDa member of the Siglec (or sialic-acid-binding immunoglobulin-like lectin) family of transmembrane proteins (1, 2, 3). CD83 is synthesized as a type I transmembrane glycoprotein that contains a 125 amino acid (aa) extracellular region, a 22 aa transmembrane segment, and 39 aa cytoplasmic domain. It contains one V type Ig-like domain in the extracellular region with no inhibitory cytoplasmic motif(s). Although in vitro studies suggest CD83 may form membrane-bound covalent homodimers, in vivo this does not appear to be the case (1, 4). In the extracellular region, mouse and human CD83 are 66% aa identical (1, 2, 4, 5). Relative to human, mouse CD83 is 11 aa shorter in its extracellular domain and is expressed as a 30‑35 kDa protein (1, 4, 5). Human CD83 is active in the mouse system (4). One alternate splice form has been reported. This leads to a small monomeric soluble form of 74 aa that includes aa 20‑52 and aa 164‑205 (6, 7). In human, proteolytic cleavage and solubilization of CD83 has also been suggested, and this could lead to dimeric circulating CD83 (4, 6). CD83 is a primary marker for dendritic cells (3, 6, 8). It is also found on B cells (6, 9), neutrophils (10), monocytes and macrophages (11). Except for dendritic cells, CD83 expression is often transient. CD83 binds to sialic acids on target cells (12). Membrane CD83 appears to promote T cell proliferation, particularly of CD8+ cytotoxic T cells (13, 14). Soluble CD83, however, appears to be immunosuppressive and blocks T cell activation (15, 16). On monocytes, CD83 is suggested to drive monocytes into a fibrocyte phenotype (13). A lack of membrane-expressed CD83 leads to an unusual IL-4/IL-10 producing CD4+ T cell phenotype (17).

References
  1. Zhou, L-J. et al. (1992) J. Immunol. 149:735.
  2. Kozlow, E.J. et al. (1993) Blood 81:454.
  3. Fujimoto, Y and T.F. Tedder (2006) J. Med. Dent. Sci. 53:85.
  4. Lechmann, M. et al. (2005) Biochem. Biophys. Res. Commun. 329:132.
  5. Berchtold, S. et. al. (1999) FEBS Lett. 461:211.
  6. Hock, B.D. et al. (2001) Int. Immunol. 13:959.
  7. Dudziak, D. et al. (2005) J. Immunol. 174:6672.
  8. Velten, F.W. et al. (2007) Mol. Immunol. 44:1544.
  9. Cramer, S.O. et al. (2000) Int. Immunol. 12:1347.
  10. Yamashiro, S. et al. (2000) Blood 96:3958.
  11. Cao, W. et al. (2005) Biochem. J. 385:85.
  12. Scholler, N. et al. (2001) J. Immunol. 166:3865.
  13. Scholler, N. et al. (2002) J. Immunol. 168:2599.
  14. Hirano, N. et al. (2006) Blood 107:1528.
  15. Kotzor, N. et al. (2004) Immunobiology 209:129.
  16. Zinser, E. et al. (2006) Immunobiology 211:449.
  17. Garcia-Martinez, L.F. et al. (2004) J. Immunol. 173:2995.
Entrez Gene IDs
9308 (Human); 12522 (Mouse)
Alternate Names
B-cell activation protein; BL11; BL11CD83 antigen; CD83 antigen (activated B lymphocytes, immunoglobulin superfamily); CD83 molecule; CD83; Cell surface protein HB15; cell-surface glycoprotein; HB15; HB15hCD83

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