• Species Reactivity

  Human

• Specificity

  Detects human Indoleamine 2,3-dioxygenase/IDO in direct ELISAs.

• Source

  Monoclonal Mouse IgG    ₁ Clone # 700838

• Purification

  Protein A or G purified from hybridoma culture supernatant

• Immunogen

  E. coli-derived recombinant human Indoleamine 2,3-dioxygenase/IDO    
  Ala2-Gly403    
  Accession # P14902

• Formulation

  Supplied in a saline solution containing BSA and Sodium Azide.

• Label

  Phycoerythrin

Applications

• 
  

  Recommended    
  Concentration

  Sample

• Intracellular Staining by Flow Cytometry

  10 µL/10    ⁶ cells

  See below

• 
  

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

Data Examples

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: Indoleamine 2,3-dioxygenase/IDO

Indoleamine 2,3-dioxygenase (also known as IDO) is a heme-containing intracellular dioxygenase catalyzing the degradation of the essential amino acid L-tryptophan to N‑formyl‑kynurenine (1). This degradation is the first and rate-limiting step of the L-kynurenine pathway (2). IDO is widely expressed in dendritic cells, macrophages, microglia, eosinophils, fibroblasts, endothelial cells, and most tumor cells. In immune cells, its expression is mainly induced by cytokines such as IFN-gamma, IFN-alpha, IFN‑ beta, and IL-10. IDO has an antimicrobial function due to its decreasing the availability of the essential amino acid tryptophan in inflammatory environments (3). Recent studies have demonstrated that IDO induces immunosuppression during infection, pregnancy, transplantation, autoimmunity, and neoplasia (3-5).

• References:

1. Lewis-Ballester, A. et al. (2009) Proc. Natl. Acad. Sci. USA. 106:17371.

2. Costantino, G. (2009) Expert Opin. Ther. Targets 13:247.

3. Xu, H. et al. (2008) Immunol. Lett. 121:1.

4. Lob, S. et al. (2009) Nat. Rev. Cancer 9:445.

5. Curti, A. et al. (2009) Blood 113:2394.

• Entrez Gene IDs:

  3620 (Human); 15930 (Mouse)

• Alternate Names:

  3dioxygenase; EC 1.13.11.52; IDO; IDO1; IDOIDO-1; INDO; INDOindole 2,3-dioxygenase; Indoleamine 2; indoleamine 2,3-dioxygenase 1; Indoleamine 2,3-dioxygenase; indoleamine-pyrrole 2,3 dioxygenase; Indoleamine-pyrrole 2,3-dioxygenase