Complete enzyme set for chlorophyll biosynthesis in Escherichia coli.
Complete enzyme set for chlorophyll biosynthesis in Escherichia coli.
复制标题
大肠杆菌中叶绿素生物合成的完整酶。
DOI:
10.1126/sciadv.aaq1407
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发表时间:
2018-01
期刊:
影响因子:
13.6
通讯作者:
Hunter CN
中科院分区:
文献类型:
--
作者:
Chen GE;Canniffe DP;Barnett SFH;Hollingshead S;Brindley AA;Vasilev C;Bryant DA;Hunter CN
Escherichia coli has been engineered to produce chlorophyll. Chlorophylls are essential cofactors for photosynthesis, which sustains global food chains and oxygen production. Billions of tons of chlorophylls are synthesized annually, yet full understanding of chlorophyll biosynthesis has been hindered by the lack of characterization of the Mg–protoporphyrin IX monomethyl ester oxidative cyclase step, which confers the distinctive green color of these pigments. We demonstrate cyclase activity using heterologously expressed enzyme. Next, we assemble a genetic module that encodes the complete chlorophyll biosynthetic pathway and show that it functions in Escherichia coli. Expression of 12 genes converts endogenous protoporphyrin IX into chlorophyll a, turning E. coli cells green. Our results delineate a minimum set of enzymes required to make chlorophyll and establish a platform for engineering photosynthesis in a heterotrophic model organism.
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DOI:
10.1073/pnas.1701687114
发表时间:
2017-06-13
影响因子:
11.1
作者:
Chen, Guangyu E.;Canniffe, Daniel P.;Hunter, C. Neil
通讯作者:
Hunter, C. Neil