生物活性 | |||
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描述 | PTP Inhibitor II is a photoreversible covalent Inhibitor of PTP (Protein Tyrosine Phosphatases) with Ki value of 128μM for SHP-1(ΔSH2). PTP Inhibitor II could bind to the PTP active site as a phosphotyrosine mimetic. Its phenyl ring could engage in hydrophobic interactions with the protein as the phenyl ring of a substrate does, and the electron-rich halogen atom could mimic the negatively charged phosphate oxyanions. Binding of PTP Inhibitor II to the PTP active site in such a manner would place the R-carbon, which is highly susceptible to nucleophilic attack, next to the catalytic cysteine. An SN2 reaction between 1 and the cysteine thiol would result in the formation of a covalent enzyme-inhibitor adduct through a stable thioether linkage and loss of phosphatase activity. | ||
作用机制 | PTP Inhibitor II could bind to the PTP active site as a phosphotyrosine mimetic.[1] |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
4.37mL 0.87mL 0.44mL |
21.83mL 4.37mL 2.18mL |
43.65mL 8.73mL 4.37mL |
参考文献 |
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