Recombinant human IDO protein
IDO1 is an indoleamine 2, 3-dioxygenase - a heme enzyme that catalyzes the first and rate-limiting step in tryptophan catabolism to N-formyl-kynurenine. This enzyme acts on multiple tryptophan substrates including D-tryptophan, and serotonin. It is thought to play a role in a variety of pathophysiological processes such as antimicrobial and antitumor defense, neuropathology, immunoregulation, and antioxidant activity. Through its expression in dendritic cells, monocytes, and macrophages this enzyme modulates T-cell behavior by its peri-cellular catabolization of the essential amino acid tryptophan. Recombinant human IDO1 protein, fused to His-tag at N-terminus, was expressed in E. coli and purified by using conventional chromatography techniques.
Product Specifications
Specifications
Product Name Alternative
Indoleamine 2,3-dioxygenase 1, IDO, IDO-1, INDO
Expression System
E.coli
Antigen Species
Human
Tag
His-Tag
Applications
Enzyme Activity, SDS-PAGE
Concentration
0.5 mg/mL (determined by Bradford assay)
Endotoxin
< 1 EU per 1ug of protein (determined by LAL method)
Purity
> 90% by SDS-PAGE
Bioactivity
Molecular Weight
47.7 kDa (426aa) confirmed by MALDI-TOF
Additionnal Information
References & Citations
Metz R., et al (2007) . Nature Cancer Res. 67:7082-7087; ; Yuasa H.J., et al (2007) . J. Mol. Evol. 65:705-714
Storage Conditions
Can be stored at 2°C to 8°C for 1 week. For long term storage, aliquot and store at -20C to -80C. Avoid repeated freezing and thawing cycles.
Formulation
Liquid in. 20 mM Tris-HCl buffer (pH 8.0) containing 0.15M NaCl, 20% glycerol, 1mM DTT
Scientific Category
Metabolism
NCBI Accession Number
NP_002155
Uniprot Accession Number
P14902
Species
Human
AA Sequence
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