The present invention relates to methods for detecting sulfenylation within thiol groups in proteins, metabolites, or materials. Protein sulfenylation (Cys-SOH) describes the reversible post-translational modification of protein thiols by hydrogen peroxide, and plays a central role in oxidative signaling (see, e.g., Paulsen, C. E. & Carroll, K. S. 2013 Chemical Reviews 113, 4633-679). Growth factor stimulation activates NADPH oxidase enzymes, releasing a local burst of hydrogen peroxide, which transiently oxidizes the nuclcophilic cysteine of protein phosphatases and other proximal redox active thiols (see, e.g., Paulsen, C. E. et al., 2012 Nature Chemical Biology 8, 57-64). In addition to masking functional cysteine's, sulfenylation is also a critical intermediate towards irreversible cysteine oxidation.
本发明涉及检测蛋白质、代谢物或材料中
硫醇基内亚
硫酰化的方法。蛋白质亚磺酰化(Cys-SOH)描述了
过氧化氢对蛋白质
硫醇的可逆翻译后修饰,在氧化信号传导中起着核心作用(参见 Paulsen, C. E. & Carroll, K. S. 2013
化学评论 113, 4633-679)。生长因子刺激会激活
NADPH 氧化酶,释放局部
过氧化氢猝发,瞬时氧化蛋白
磷酸酶的嗜核半胱
氨酸和其他近端氧化还原活性
硫醇(参见 Paulsen, C. E. 等人,2012 Nature Chemical Biology 8, 57-64)。除了掩盖功能性半胱
氨酸外,亚磺酰化还是半胱
氨酸不可逆氧化的关键中间体。