A group of bacterial dihydroxy-acid dehydratases having a [2Fe-2S] cluster was discovered. Bacterial [2Fe-2S] DHADs were expressed as heterologous proteins in bacteria and yeast cells, providing DHAD activity for conversion of 2,3-dihydroxyisovalerate to α-ketoisovalerate or 2,3-dihydroxymethylvalerate to α-ketomethylvalerate. Isobutanol and other compounds may be synthesized in pathways that include bacterial [2Fe-2S] DHAD activity.
发现了一组具有 [2Fe-2S] 簇的细菌二羟基酸脱
水酶。细菌[2Fe-2S]
DHADs 在细菌和酵母细胞中以异源蛋白的形式表达,具有将 2,3-二羟基
异戊酸转化为 α-酮
异戊酸或将 2,3-二羟甲基
戊酸转化为 α-酮甲基
戊酸的
DHAD 活性。
异丁醇和其他化合物可能通过包括细菌 [2Fe-2S]
DHAD 活性在内的途径合成。