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2 protocols using sec498cys

1

Enzymatic Assays for Oxidative Stress

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Purified rat liver TrxR1, recombinant
human Trx1, and glutathione reductase (GR), recombinant E.
coli
Trx1, bovine glutathione peroxidase (GPx), insulin,
NADPH, 5,5′-dithiobis(2-nitrobenzoic acid) (DTNB), APAP, NAPQI,
menadione (2-methyl-1,4-napthoquinone), reduced glutathione (GSH),
oxidized glutathione (GSSG), phosphatase inhibitors (catalog no. P2850,
which contains microcystinLR, cantharidin, and (−)-p-bromotetramisole), and protease inhibitor cocktail (catalog
no. P2714, which contains 4-(2-aminoethyl)benzenesulfonyl fluoride,
E-64, bestatin, leupeptin, aprotinin, and EDTA) were purchased from
Sigma-Aldrich (St. Louis, MO). Sodium aurothiomalate hydrate was from
Aldrich (Milwaukee, WI). Human recombinant TrxR mutant enzyme (Sec498Cys)
was from AbFrontier (Seoul, Korea). Pooled human liver microsomes
(HLM) and recombinant human P450s 1A2, 2E1, and 3A4 were purchased
from BD Genetest (Woburn, MA). N-(Biotinoyl)-N′-(iodoacetyl) ethylenediamine (BIAM) was from Molecular
Probes (Eugene, OR) and horseradish peroxidase (HRP)-conjugated streptavidin
from GE Healthcare (Piscataway, NJ). Enhanced chemiluminescence (ECL)
immunoblot detection reagents were from Thermo Scientific (Rockford,
IL).
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2

Recombinant TrxR1 Mutant Enzyme Analysis

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Human recombinant TrxR1 mutant enzyme (Sec498Cys) was from AbFrontier (Seoul, Korea). Dulbecco’s modified Eagle’s medium (DMEM; containing 4500 mg/L D-glucose, 110 mg/mL sodium pyruvate, and 584 mg/L L-glutamine; catalog no. 11995–065), fetal bovine serum, puromycin, and penicillin/streptomycin were from Life Technologies (Grand Island, NY). The SuperSignal West Pico Chemiluminescense Substrate kit was from Thermo Scientific (Rockford, IL). Purified rat cytosolic TrxR, recombinant human Trx1, HN2, insulin, NADPH, 5,5′-dithiobis(2-nitrobenzoic acid) (DTNB), phosphatase inhibitor cocktail (catalog no. P2850, which contains microcystinLR, cantharidin, and (−)-p-bromotetramisole), protease inhibitor cocktail (catalog no. P2714, which contains 4-(2-aminoethyl)-benzenesulfonyl fluoride, E-64, bestatin, leupeptin, aprotinin, and EDTA), and all other chemicals were from Sigma (St. Louis, MO).
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