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王宝茹, 王旭, 王伟波, 唐东山. Cu-NiR与cd1-NiR——两类反硝化亚硝酸还原酶研究进展[J]. 植物科学学报, 2021, 39(3): 324-334. DOI: 10.11913/PSJ.2095-0837.2021.30324
引用本文: 王宝茹, 王旭, 王伟波, 唐东山. Cu-NiR与cd1-NiR——两类反硝化亚硝酸还原酶研究进展[J]. 植物科学学报, 2021, 39(3): 324-334. DOI: 10.11913/PSJ.2095-0837.2021.30324
Wang Bao-Ru, Wang Xu, Wang Wei-Bo, Tang Dong-Shan. Cu-NiR and cd1-NiR: Advances in two kinds of denitrifying nitrite reductase[J]. Plant Science Journal, 2021, 39(3): 324-334. DOI: 10.11913/PSJ.2095-0837.2021.30324
Citation: Wang Bao-Ru, Wang Xu, Wang Wei-Bo, Tang Dong-Shan. Cu-NiR and cd1-NiR: Advances in two kinds of denitrifying nitrite reductase[J]. Plant Science Journal, 2021, 39(3): 324-334. DOI: 10.11913/PSJ.2095-0837.2021.30324

Cu-NiR与cd1-NiR——两类反硝化亚硝酸还原酶研究进展

Cu-NiR and cd1-NiR: Advances in two kinds of denitrifying nitrite reductase

  • 摘要: 亚硝酸还原酶(Nitrite Reductase,NiR)是自然界氮循环过程中催化亚硝酸盐还原的一类关键酶。其中,nirSnirK基因编码合成的亚硝酸还原酶Cu-NiR和cd1-NiR是反硝化作用中的限速酶,二者功能类似但结构和辅助因子组成截然不同。研究发现这两类酶对不同环境梯度具有不同的响应机制。因此,本文详述了Cu-NiR和cd1-NiR的结构特征、相关微生物类群的分布和检测技术,并针对nirSnirK基因表达和活性的影响因素进行了统计和分析,最后对未来的研究方向进行了展望。

     

    Abstract: Nitrite reductase (NiR) is a key enzyme in the natural nitrogen cycle that catalyzes the reduction of nitrite. Cu-NiR and cd1-NiR, which are encoded by the nirK and nirS genes, respectively, are rate-limiting enzymes in denitrification. Although they have similar functions, their structures and cofactors are different. In addition, they exhibit different responses to different environmental gradients. The structural characteristics, microbial population distribution, and detection techniques of these two enzymes are reviewed in this report. Furthermore, the environmental factors that determine the expression and activity of the nirS and nirK genes are examined. Finally, future research directions are proposed.

     

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