用H2S/Thiol调解和的酸盐在固态中的酸盐减少
Garik G Martirosyan1, Astghik A Hovhannisyan1, Lusine S Harutyunyan1
1The Scientific Technological Centre of Organic and Pharmaceutical Chemistry NAS RA, Molecule Structure Research Centre, 26 Azatutyan Av., Yerevan 0014, Armenia.
研究人员探索了金属蛋白如何将酸盐转化为酸盐,这是对缺氧损伤的关键保护机制. 利用仿生模型,他们确定了这种重要的生物转变的新型中间体和途径.
科学领域:
- 生物化学和生物物理学
- 生物有机化学 生物有机化学
- 化学生物学 化学生物学
背景情况:
- 内源性亚酸盐降解为酸盐是对哺乳动物缺氧损伤的关键保护机制.
- 酸化合物是参与各种生理过程的重要信号分子.
- 了解由金属蛋白介导的化学机制具有重大意义.
研究的目的:
- 为了研究仿生金属胺酸盐复合物与硫醇的化学反应.
- 在模型系统中阐明化物降解为化的机制.
- 用光谱和计算方法识别反应中间体和产物.
主要方法:
- 使用的仿生模型:二四甲酸 (CoTTP) 和二四甲酸 (MnTPP).
- 研究了与硫化 (H2S) 和乙乙醇 (EtSH) 在从77K到室温的温度下,在升华固体薄膜中的反应.
- 用于现场红外和光学光谱学,质谱学和密度函数理论 (DFT) 计算.
主要成果:
- 观察到协调化物复合物的转化为化物复合物 (Co(TTP) ((NO) 和 Mn(TPP) ((NO)) 在与硫醇反应时.
- 确定了一种新型的六坐标M ((Por) ((RSH) ((nitrite) 复合物作为低温中介物.
- 证实了在存在多余的硫醇时加热后形成酸复合物的形成.
结论:
- 该研究提供了对金属蛋白介导的化物减少机制的见解.
- 描述了酸盐转化为酸的新反应途径和中间体.
- 这些发现有助于理解与NO相关的生物活动和低氧伤害保护.
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