An Artificial Co‐enzyme Based on the Viologen Skeleton for Highly Efficient CO
<sub>2</sub>
Reduction to Formic Acid with Formate Dehydrogenase
作者:Shusaku Ikeyama、Yutaka Amao
DOI:10.1002/cctc.201601188
日期:2017.3.8
functional groups in the reduced form of the viologen derivatives on the catalytic activity of FDH with respect to the reduction of CO2. By using 1,1′‐diaminoethyl‐4,4′‐bipyridinium salt, which is the reduced form of a viologen derivative with two amino groups, we optimized the reduction of CO2 to formic acid with FDH. The catalytic efficiency value (kcat/Km) of the reduced form of 1,1′‐diaminoethyl‐4
甲酸酯脱氢酶(FDH)是用于还原CO 2的有吸引力的催化剂,因为常温下在中性水溶液中室温下常温下FDH可将CO 2转化为甲酸。还原形式的甲基紫精在将CO 2转化为甲酸时作为FDH的人工辅酶。为了提高FDH还原CO 2的催化活性,合成了带有离子基团的紫精衍生物作为FDH的有效人工辅酶。我们使用酶动力学分析来评估紫精衍生物还原形式的离子氨基或羧基官能团对FDH催化活性(相对于CO 2还原)的影响。通过使用1,1'-二氨基乙基-4,4'-联吡啶鎓盐(具有两个氨基的紫精衍生物的还原形式),我们优化了用FDH将CO 2还原为甲酸。1,1'-二氨基乙基-4,4'-联吡啶鎓盐的还原形式的催化效率值(k cat / K m)被估计比天然辅酶NADH大560倍以上。从分析结果来看,CO 2的还原受到紫精衍生物的离子基团的影响。