TDO2 (NM_005651) Human Recombinant Protein

CAT#: TP302777

Recombinant protein of human tryptophan 2,3-dioxygenase (TDO2)

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 Product Datasheet for 'TP302777'

USD 680.00


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Size
    • 20 ug

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Specifications

Product Data
Description Recombinant protein of human tryptophan 2,3-dioxygenase (TDO2)
Species Human
Expression Host HEK293
Expression cDNA Clone or AA Sequence Recombinant protein was produced with TrueORF clone, RC202777. Click on the TrueORF clone link to view cDNA and protein sequences.
Tag C-MYC/DDK
Predicted MW 47.7 kDa
Concentration >50 ug/mL as determined by microplate BCA method
Purity > 80% as determined by SDS-PAGE and Coomassie blue staining
Buffer 25 mM Tris.HCl, pH 7.3, 100 mM glycine, 10% glycerol.
Bioactivity The specific activity of TDO2 was determined by monitoring Kynurenine formation from the N-formylkynurenine based on the absorbance at 492nm. The N-formylkynurenine was produced from a conversion of tryptophan with TDO2. The reactions were carried out at 37°C for 40min in 100ul of the reaction volume containing 200mM PBS, pH7.5, 1mM ascorbic acid, and 1.25mM L-tryptophan as the substrate with various amounts of TDO2. The reaction was terminated by adding 50ul of 30% (w/v) trichloroacetic acid. The sample was further incubated for 30min at 60°C and centrifuged at 12000 rpm for 15 min. The supernatant was used to mix with an equal volume of Ehrlich's reagent (2% p-dimethylaminobenza-ldehyde in glacial acetic acid) to measure the absorbance at 492 nm after 10min incubation
Reference Data
RefSeq NP_005642
Locus ID 6999
Refseq Size 1712
Cytogenetics 4q32.1
Refseq ORF 1218
Synonyms TDO; TO; TPH2; TRPO
Summary This gene encodes a heme enzyme that plays a critical role in tryptophan metabolism by catalyzing the first and rate-limiting step of the kynurenine pathway. Increased activity of the encoded protein and subsequent kynurenine production may also play a role in cancer through the suppression of antitumor immune responses, and single nucleotide polymorphisms in this gene may be associated with autism. [provided by RefSeq, Feb 2012].
Protein Pathways
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