Significance
          
            We have solved a long-standing mystery of the biosynthetic origin of 1-undecene, a ubiquitous hydrocarbon semivolatile metabolite of
            Pseudomonas
            . Our study revealed an unprecedented family of nonheme oxidases that specifically convert medium-chain fatty acids into the corresponding terminal olefins using an oxygen-activating, nonheme iron-dependent mechanism. Our findings unveil previously unidentified chemistry in the nonheme Fe(II) enzyme family, aid the functional study of this ubiquitous metabolite in
            Pseudomonas
            , expand the scarce enzyme inventory for the transformation of fatty acid precursors to hydrocarbons, and serve as the basis for engineering efforts to establish bioprocesses to produce medium-chain terminal olefins, useful as fuels and chemical building blocks, from renewable resources.
          
 
                                    《意义》
我们解决了长期存在的关于
1-十一烯的
生物合成起源的谜团,这是一种广泛存在的半挥发性代谢产物,来自于假单胞菌。我们的研究揭示了一类前所未见的非血红素氧化酶家族,它们通过氧活化、非血红素
铁依赖机制,特异地将中链
脂肪酸转化为相应的末端烯烃。我们的发现揭示了非血红素Fe(II)酶家族中以前未知的
化学反应,有助于研究假单胞菌中这种普遍代谢产物的功能,扩大了转化
脂肪酸前体为烃类的酶库存,为建立利用可再生资源生产中链末端烯烃的
生物过程的工程努力奠定了基础,这些烃类可用作燃料和
化学构建块。