ARG2 Inhibitor Screening Assay Kit
The ARG2 Inhibitor Screening Assay Kit is designed to measure ARG2 (arginase 2) activity for screening and profiling applications. The assay kit comes in a convenient 96-well or 384-well format, with enough purified recombinant ARG2 (amino acids 22-355), thioarginine substrate, assay buffer and detection reagent for 100 or 400 enzyme reactions.
Need us to run inhibitor screens or profile your compounds against ARG2? Check out our Immunotherapy Biochemical Screening Services.
- Spectrophotometer capable of measuring absorbance at λ= 410–415 nm.
- Ethanol (200 proof)
96 reactions
| Catalog # | Name | Amount | Storage |
| 71659 | ARG2, His-Tag* | 5 µg | -80°C |
| 10x ARG Assay Buffer | 1 ml | -80°C | |
| Thioarginine | 1 mg | -80°C | |
| Detection Reagent | 3 mg | -80°C | |
| 79965 | UV Transparent 96-well plate | 1 | Room Temp |
* The concentration of protein is lot-specific and will be indicated on the tube containing the protein.
384 reactions
| Catalog # | Name | Amount | Storage |
| 71659 | ARG2, His-Tag* | 10 µg | -80°C |
| 10x ARG Assay Buffer | 5 ml | -80°C | |
| Thioarginine | 3 x 1 mg | -80°C | |
| Detection Reagent | 3 mg | -80°C | |
| 79962 | UV Transparent 96-well plate | 1 | Room Temp |
* The concentration of protein is lot-specific and will be indicated on the tube containing the protein.
Arginase enzymes convert arginine to ornithine through hydrolysis. Two known isoforms of Arginase exist, ARG1 and ARG2. This enzyme is involved in the regulation of a variety of immunological responses and is a major target in immunotherapy. ARG1/2 is overexpressed in myeloid-derived suppressor cells (MDSCs) and tumor-associated macrophages (TAMs). Overexpression of ARG1/2 results in depleted levels of arginine both intracellularly and extracellularly. As arginine levels are depleted in the microenvironment, immune cells are starved of this amino acid and the function of key immunological activators become impaired; T cell proliferation is inhibited, regulatory T cells become activated and inhibit CD4+ T cells, and immunosuppressants have increased longevity. Depleted arginine also results in the release of reactive nitrogen species and reactive oxygen species from TAMs and MDSCs. These reactive species cause T cell apoptosis and the activation and growth of antigen presenting cells.
Sedbrook J.C., et al., 1999 PNAS 96(3):1140-1145.
Woll P.J., et al., 1998 PNAS 85(6):1859-1863.
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