| Assay Method Information | |
| | Enzymatic Inhibition Assay |
| Description: | Substrate (NH2-KGGEEEEYFELVKK-CO2), internal standard peptide (NH2-SWGAIETDKEYYTVKD-CO2) and product peptide (for standard curve only) (NH2-KGGEEEEY-Pi-FELVKK-CO2), were purchased from AnaSpec (Fremont, Calif., USA). JAK1-JH1JH2 (574-1154 with a His-GST Tag and a C-terminal tev (ENLYFQ-G) cleavage site), JAK3-JH1JH2 (512-1124 with a GST Tag and a C-terminal tev (ENLYFQ-G) cleavage site), and Tyk2-JH1JH2 (8H_tev_580-1182-C936A-C1142A with a C-terminal tev (ENLYFQ-G) cleavage site) were purified internally. JAK2-JH1JH2 (532-1132 with a GST tag and C-terminal tev (ENLYFQ-G) cleavage site), was purchased from Invitrogen. LC/MS grade water and acetonitrile (ACN), were purchased from HoneyWell, Burdick & Jackson (Muskegon, Mich., USA). Dimethylsulfoxide 99.8% (DMSO) and trifluoroacetic acid 99.5% (TFA) were purchased from EMD Chemical (Gibbstown, N.J., USA). Adenosine triphosphate (ATP), 4-morpholinepropanesulfonic acid (MOPS), magnesium chloride (MgCl2), ethylenediaminetetraacetic acid (EDTA), dithiothreitol (DTT), formic acid >95% (FA) and Tween-20 were purchased from Sigma (St Louis, Mo., USA). 384-well polypropylene plates, Cat #781280 were purchased from Greiner (Monroe, N.C.), RapidFire™ cartridge A C4 Column (Agilent Technologies, Santa Clara, Calif.). |
| Affinity data for this assay | |
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