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4 protocols using dl dithiothreitol

1

Protein Extraction and Purification Protocol

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The urea was purchased from Amresco (Solon, OH, USA). Thiourea was purchased from Pharmabiology. DL-dithiothreitol (DTT), ethylene diamine tetraacetic acid (EDTA), sodium dodecyl sulfate (SDS), and Tris base were purchased from Solarbio (Shanghai, China). Phenylmethanesulfonyl fluoride (PMSF) and protein marker was purchased from Thermo Fisher Scientific (Waltham, MA, USA). Iodoacetamide (IAM) was purchased from Aladdin (Shanghai, China). HPLC-grade acetone, acetonitrile, and formic acid were purchased from TEDIA Company Inc (Fairfield, OH, USA). Cellulose, pectolyase, and macerozyme were purchased from Sigma-Aldrich (St. Louis, MO, USA). Mannitol and other common chemicals and reagents were obtained from the Shanghai Sangon Biotech Company (Shanghai, China). Protein Assay Dye Reagent Concentrate was purchased from Bio-Rad (Hercules, CA, USA). An SDS-PAGE gel preparation kit was purchased from Beyotime (Shanghai, China). Ultrafilter (10 kD) was purchased from Merck-Millipore (Darmstadt, Germany). Milli-Q water was used in all experiments.
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2

Proteomic Analysis of Bovine Serum

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Albumin from bovine serum was procured from Wuhan Chucheng Zhengmao Science and Technology Engineering Co., Ltd. DL-Dithiothreitol were procured from Solarbio, while EDTA, Xylene brilliant cyaninG-250, Sodium dodecyl sulfate, ThioUrea, and Acetone were procured from Sinopharm. Iodoacetamide was procured from Aladdin, and Phenylmethanesulfonyl fluoride was procured from Xiya Reagent. Tetraethylammonium bromide and Urea were procured from Sigma. Trypsin was procured from Promega, and the protein marker was procured from Fementas. Lastly, the bicinchoninic acid (BCA) protein quantification kit was procured from Biyuntian. ELISA kits for myosin heavy chain 9 (MYH9) and fetuin B (FETUB) were procured from Wuhan Fearn and Eliot Biotechnology Co.
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3

Comprehensive Molecular Reagents Protocol

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CA (C110084) was purchased from Aladdin (Shanghai, China). 3-Phenylpropanal (BD17390) was purchased from Bidepharm (Shanghai, China). Cinnamic acid (C804991) was obtained from Macklin (Shanghai, China). FTM (S87283) and TAX (B21695) were purchased from Yuanye (Shanghai, China). DITC (F21540) was purchased from MERYER (Shanghai, China). Pt (HY-17394) was purchased from MedChemExpress (MCE, Monmouth, NJ, USA). TMZ (AK-72945) was purchased from Ark Pharm (Chicago, IL, USA). D,L-dithiothreitol was purchased from Solarbio (DTT, A285, Beijing, China). AP-III-a4 (HY-15858A) was purchased from MCE. Antibodies against Bax (50599-2-lg), Bcl2 (60178-1-lg), and Bid (10988-1-AP) were obtained from Proteintech (Chicago, IL, USA); ENO1 (bs-3978R), anti-GADPH (bsm-0978M), and β-actin (bs-0061R) antibodies were purchased from Bioss (Beijing, China). Alexa-Fluor-594-conjugated goat anti-rabbit IgG (ab150084) was purchased from Abcam (Cambridge, MA, UK), and a goat anti-rabbit IgG (#7074) secondary antibody was obtained from CST (Beverly, MA, USA).
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4

Production and Purification of Recombinant Ara h 1

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The coding DNA of full-length Ara h 1 [28 (link)], adding 6 × his tag, was cloned into a pET-32a expression vector by Shenggong biology company (Shanghai, China). Recombinant Ara h 1 (rAra h 1) was produced by Escherichia coli BL21(DE3) pLysS and purified as described [17 (link)]. Bovine serum albumin (BSA), microbial transglutaminase (MTG), 3,3′,5,5′-tetramethylbenzidine (TMB), isopropyl-β-D-thiogalactopyranoside (IPTG), 4-nitrophenyl-N-acetyl-β-D-glucosaminide (PNAG), 1-anilino-8-naphthalene-sulfonate (ANS), and peroxidase (HRP)-labeled goat anti-human IgE were purchased from Sigma Chemical Co. (St Louis, MO, USA). Precast 4–20% electrophoresis gel kits, loading buffer, DL-dithiothreitol (DTT), BCA Protein Assay Kit, and peroxidase (HRP)-labeled goat anti-rabbit IgG were obtained from Solarbio Co. (Beijing, China). The standard protein marker was obtained from TransGen Biotech Company (Beijing, China). Rabbit anti-Ara h 1 antibody was kindly provided by the university of Manchester. Enhanced chemiluminescence (ECL) kit for immunoblotting and ImmunoCAP assay kit were purchased from Beyotime Co. (Shanghai, China).
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