Cysteine

Manufactured by Maclin Biochemical Technology

Sourced in China

Cysteine is a non-essential amino acid that plays a crucial role in various biological processes. It is a sulfur-containing amino acid that can be synthesized in the human body. Cysteine is involved in the formation of proteins and enzymes, and it also contributes to the production of glutathione, an important antioxidant.

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Lab products found in correlation

6 protocols using cysteine

Biochemical Reagents Procurement Protocol

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SPI was obtained from Linyi Shansong Biological Products Co., Ltd. (Linyi, China). Cysteine and β-mercaptoethanol (β-ME) were obtained from Macklin Biochemical Co., Ltd. (Shanghai, China). Glycerol was obtained from Xilong Scientific Co., Ltd. (Shantou, China).

Jiang J., Shi L., Ren Z, & Weng W. (2023). Preparation and characterization of soy protein isolate films by pretreatment with cysteine. Food Chemistry: X, 18, 100735.

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Synthesis and Characterization of Zr-Based Hybrid Materials

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2-aminoterephthalic acid (ATA, 98%), tetracycline (TET, ≥98%), doxycycline (DOX, ≥98%), oxytetracycline (OTC, ≥98%), chlortetracycline (CTC, ≥98%), chloramphenicol (CAP, 98%), tyrosine (Tyr), histidine (His), serine (Ser), phenylalanine (Phe), arginine (Arg) and cysteine (Cys) were provided by Shanghai Macklin Biochemical Co., Ltd. (Shanghai, China). Zirconium chloride (ZrCl₄, 99%) was purchased from Beijing Yinuokai Technology Co., Ltd. (Beijing, China). Methacrylic acid (MAA, 99%), 2,2-azobisisobutyronitrile (AIBN, 99%) and ethylene glycol dimethacrylate (EGDMA, 98%) were obtained from TCI Development Co., Ltd. (Shanghai, China). N, N-dimethylformamide (DMF), ethanol, glucose, sucrose, MnCl₂·4H₂O, MgCl₂·6H₂O, Zn(NO₃)₂·6H₂O, CaCl₂, NaCl and KCl were supplied by Sinopharm Chemical Reagent Co., Ltd. (Shanghai, China). All reagents and chemicals used in this work were of at least analytical grade. The apparatuses utilized in this study are described in detail in the supporting information.

Wang X., Liu C., Cao Y., Cai L., Wang H, & Fang G. (2023). A Turn-Off Fluorescent Biomimetic Sensor Based on a Molecularly Imprinted Polymer-Coated Amino-Functionalized Zirconium (IV) Metal–Organic Framework for the Ultrasensitive and Selective Detection of Trace Oxytetracycline in Milk. Foods, 12(11), 2255.

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Characterization of Carbon Fiber Materials

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All the chemicals were of analytical grade and used as purchased without further purification. CF (thickness of 1 mm) were supplied by Suzhou Taili New Energy Materials Ltd. Co (P.R. China). Sodium hydroxide, sodium chloride, glucose, dopamine, ascorbic acid, uric acid, cysteine, sucrose, lactose, and maltose were supplied by Macklin Inc, Shanghai, China.

Li Z., Chen Y., Xin Y, & Zhang Z. (2015). Sensitive electrochemical nonenzymatic glucose sensing based on anodized CuO nanowires on three-dimensional porous copper foam. Scientific Reports, 5, 16115.

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Highly Sensitive Enzymatic Biosensor

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All reagents were not purified further before use. Methylbenzene, hydrochloric acid (HCl), lysine (Lys), arginine (Arg), titanium tetrachloride (TiCl₄), tetrabutyltitanate, gold (III) chloride (HAuCl₄·3H₂O), leucine (Leu), cysteine (Cys), proline (Pro), glycine (Gly), barium hydroxide octahydrate (Ba(OH)₂·8H₂O), formic acid, ethylene diamine tetraacetic disodium (EDTA−2Na), chloroplatinic acid (H₂PtCl₆), 3,3′,5,5′−tetramethylbenzidine (TMB, ≥99%), L−histidine (L−His), glutathione (GSH), glutamic acid (Glu), and fetal bovine serum were purchased from Macklin Biochemical Co., Ltd. (Shanghai, China). Sodium borohydride (NaBH₄), disodium hydrogen phosphate (Na₂HPO₄), p−Benzoquinone (p−BQ), isopropanol (IPA), potassium nitrate (KNO₃), citric acid, ascorbic acid (AA), and sodium nitrate (NaNO₃) were purchased from Sinopharm Chemical Reagents Co., Ltd. (Shanghai, China).

Liao Y., He Y., Zhang B., Ma Y., Xu R., Zhao M, & Cui H. (2024). Using the Photo–Piezoelectric Effect of AuPt@BaTiO3 Oxidase Mimetics for Colorimetric Detection of GSH in Serum. Sensors (Basel, Switzerland), 24(7), 2242.

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Tannic Acid-Copper Complex Colorimetric Assay

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Tannic acid (TA), Cu(NO₃)₂·3H₂O, ethanol, hydrogen peroxide (30 wt%), 3,3′,5,5′-tetramethylbenzidine (TMB), L-proline, glycine, cysteine, alanine, glutamic acid, NaCl, KCl, MnCl₂·4H₂O, CaCl₂, glucose and L-glutathione reduced were purchased from Macklin Biochemical Co., Ltd. Ammonia solution (25–28 wt%) and formaldehyde (37–40 wt%) were purchased from Tianjin Zhiyuan Chemical Co., Ltd. Pluronic^® F127 was purchased from Sigma-Aldrich. The qualitative filter paper was purchased from Whatman. All the reagents were used without further purification. Deionized water from a Milli-Q Plus system (Millipore) was used in all experiments.

Cheng D., Qin J., Feng Y, & Wei J. (2021). Synthesis of Mesoporous CuO Hollow Sphere Nanozyme for Paper-Based Hydrogen Peroxide Sensor. Biosensors, 11(8), 258.

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Synthesis and Characterization of Magnetic Nanoparticles

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FeCl₃·6H₂O and cysteine were purchased from Macklin (Shanghai, China). 1-Octadecene was purchased from TCI Co., Ltd (Shanghai, China). Ferumoxytol (Feraheme injection, AMAG Pharmaceuticals, MA) was used according to the instructions after purchase. Sodium oleate, ethyl alcohol, hexane, isopropanol and methylbenzene were purchased from Sinopharm Chemical Reagent Co., Ltd (Shanghai, China). Chitosan was purchased from Aladdin (Shanghai, China). Phosphate buffer saline (PBS) and low glucose Dulbecco's modified Eagle's medium (DMEM) were purchased from HyClone (America). Penicillin/streptomycin and fetal bovine serum (FBS) were purchased from Gibco (America). Basic fibroblast growth factor (bFGF) was purchased from Invitrogen (America). The Cell Counting Kit-8 (CCK8) was purchased from Dojindo Co., Ltd (Japan).

Xie M., Luo S., Li Y., Lu L., Deng C., Cheng Y, & Yin F. (2019). Intra-articular tracking of adipose-derived stem cells by chitosan-conjugated iron oxide nanoparticles in a rat osteoarthritis model. RSC Advances, 9(21), 12010-12019.

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