Provided herein are genetically engineered microbes that include at least a portion of a carbon fixation pathway, and in one embodiment, use molecular hydrogen to drive carbon dioxide fixation. In one embodiment, the genetically engineered microbe is modified to convert acetyl CoA, molecular hydrogen, and carbon dioxide to 3-hydroxypropionate, 4-hydroxybutyrate, acetyl CoA, or the combination thereof at levels greater than a control microbe. Other products may also be produced. Also provided herein are cell free compositions that convert acetyl CoA, molecular hydrogen, and carbon dioxide to 3-hydroxypropionate, 4-hydroxybutyrate, acetyl CoA, or the combination thereof. Also provided herein are methods of using the genetically engineered microbes and the cell free compositions.
本文提供的
基因工程微
生物至少包括碳固定途径的一部分,在一个实施方案中,利用分子氢驱动
二氧化碳固定。在一个实施方案中,经过改造的
基因工程微
生物可将乙酰 CoA、分子氢和
二氧化碳转化为
3-羟基丙酸、
4-羟基丁酸、乙酰 CoA 或它们的组合,其转化
水平高于对照微
生物。还可产生其他产物。本文还提供了将乙酰 CoA、分子氢和
二氧化碳转化为
3-羟基丙酸酯、
4-羟基丁酸酯、乙酰 CoA 或其组合的无细胞组合物。本文还提供了使用转
基因微
生物和无细胞组合物的方法。