Key Product Details

Species Reactivity

Human

Applications

Intracellular Staining by Flow Cytometry

Label

Alexa Fluor 750 (Excitation = 749 nm, Emission = 775 nm)

Antibody Source

Monoclonal Mouse IgG2B Clone # 998604

View all TDO2 Antibodies »

Product Specifications

Immunogen

E. coli-derived human TDO2
Leu18-Phe388
Accession # P48775

Specificity

Detects human TDO2 in direct ELISAs.

Clonality

Monoclonal

Host

Mouse

Isotype

IgG2B

Applications for Human TDO2 Alexa Fluor® 750-conjugated Antibody

Application
Recommended Usage

Intracellular Staining by Flow Cytometry

0.25-1 µg/106 cells
Sample: Human A431 epidermoid carcinoma cell line fixed with paraformaldehyde and permeabilized with saponin

Formulation, Preparation, and Storage

Purification

Protein A or G purified from hybridoma culture supernatant

Formulation

Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

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: TDO2

Tryptophan 2,3-dioxygenase (TDO2), a heme-containing cytosolic dioxygenase, forms a homo-tetrameric active molecule of approximately 190 kDa composed of 48 kDa monomers (1, 2). Human TDO2 shares 89% aa sequence identity with mouse TDO2. TDO2 is one of three proteins capable of catalyzing the first and rate-limiting step of the L-kynurenine pathway (KP): oxidative cleavage of the essential amino acid L-tryptophan to form N‑formyl‑kynurenine (3). TDO2 is a cytosolic protein typically localized to the liver and brain, unlike the more ubiquitously expressed indoleamine 2,3-dioxygenase (IDO), yet it is responsible for ~90% of the primary route of catabolism of tryptophan through the KP (3). TDO2 is upregulated in extrahepatic tumors (4-6) and is consequently a target in cancer immunotherapy (7). TDO2 is a therapeutic target in brain disease such as schizophrenia, Alzheimers disease, multiple sclerosis and glioma (8-11) due to its role in the regulation of levels of critical biologically active downstream KP metabolites (3). Polymorphisms in the TDO2 gene have been implicated for a role in behavioural responses and autism (12,13).

References

  1. Lewis-Ballester, A. et al. (2016) Sci. Rep. 6:35169.
  2. Rafice, S.A. et al. (2009) Biochem. Soc. Trans. 37:408.
  3. Badawy, A. (2017) Int J. Tryptophan Res. 10:1.
  4. Pilotte, L. et al. (2012) Proc. Natl. Acad. Sci. U.S.A. 109:2497.
  5. D'Amato, N.C. et al. (2015) Cancer Res. 75:4651.
  6. Yu, C.P et al. (2017) Med. Oncol. 34:73.
  7. Platten, et al. (2015) Front. Immunol. 5:673.
  8. Breda, C. et al. (2016) Proc. Natl. Acad. Sci. U.S.A. 113:5435.
  9. Yu, C.P. et al. (2016) Metab. Brain Dis. 31:737.
  10. Lanz. T.V. et al. (2017) Sci. Rep. 7:41271.
  11. Reus, G.Z. et al. (2018) Prog. Neuropsychopharmacol. Biol. Psychiatry 81:55.
  12. Soichot, M. et al. (2013) Alcohol Alcohol 48:415.
  13. Nabi, R. et al. (2004) Am. J. Med. Genet. B. Neuropsychiatr. Genet. 125B:63.

Long Name

Tryptophan 2,3-dioxygenase

Alternate Names

chky, TDO, TO, TRPO, Tryptophan Oxygenase, Tryptophan Pyrrolase, Tryptophanase

Entrez Gene IDs

6999 (Human); 56720 (Mouse); 64206 (Rat)

Gene Symbol

TDO2

UniProt

P48775

Additional TDO2 Products

Product Documents for Human TDO2 Alexa Fluor® 750-conjugated Antibody

Product Datasheets

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.

Download SDS

Product Specific Notices for Human TDO2 Alexa Fluor® 750-conjugated Antibody


This product is provided under an agreement between Life Technologies Corporation and R&D Systems, Inc, and the manufacture, use, sale or import of this product is subject to one or more US patents and corresponding non-US equivalents, owned by Life Technologies Corporation and its affiliates. The purchase of this product conveys to the buyer the non-transferable right to use the purchased amount of the product and components of the product only in research conducted by the buyer (whether the buyer is an academic or for-profit entity). The sale of this product is expressly conditioned on the buyer not using the product or its components (1) in manufacturing; (2) to provide a service, information, or data to an unaffiliated third party for payment; (3) for therapeutic, diagnostic or prophylactic purposes; (4) to resell, sell, or otherwise transfer this product or its components to any third party, or for any other commercial purpose. Life Technologies Corporation will not assert a claim against the buyer of the infringement of the above patents based on the manufacture, use or sale of a commercial product developed in research by the buyer in which this product or its components was employed, provided that neither this product nor any of its components was used in the manufacture of such product. For information on purchasing a license to this product for purposes other than research, contact Life Technologies Corporation, Cell Analysis Business Unit, Business Development, 29851 Willow Creek Road, Eugene, OR 97402, Tel: (541) 465-8300. Fax: (541) 335-0354.

For research use only

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