申请人:Osterhout Robin E.
公开号:US08663957B2
公开(公告)日:2014-03-04
A non-naturally occurring microbial organism has cyclohexanone pathways that include at least one exogenous nucleic acid encoding a cyclohexanone pathway enzyme. A pathway includes a 2-ketocyclohexane-1-carboxyl-CoA hydrolase (acting on C—C bond), a 2-ketocyclohexane-1-carboxylate decarboxylase and an enzyme selected from a 2-ketocyclohexane-1-carboxyl-CoA hydrolase (acting on thioester), a 2-ketocyclohexane-1-carboxyl-CoA transferase, and a 2-ketocyclohexane-1-carboxyl-CoA synthetase. A pathway includes an enzyme selected from a 6-ketocyclohex-1-ene-1-carboxyl-CoA hydrolase (acting on C—C bond), a 6-ketocyclohex-1-ene-1-carboxyl-CoA synthetase, a 6-ketocyclohex-1-ene-1-carboxyl-CoA hydrolase (acting on thioester), a 6-ketocyclohex-1-ene-1-carboxyl-CoA transferase, a 6-ketocyclohex-1-ene-1-carboxyl-CoA reductase, a 6-ketocyclohex-1-ene-1-carboxylate decarboxylase, a 6-ketocyclohex-1-ene-1-carboxylate reductase, a 2-ketocyclohexane-1-carboxyl-CoA synthetase, a 2-ketocyclohexane-1-carboxyl-CoA transferase, a 2-ketocyclohexane-1-carboxyl-CoA hydrolase (acting on thioester), a 2-ketocyclohexane-1-carboxylate decarboxylase, and a cyclohexanone dehydrogenase. A pathway includes an adipate semialdehyde dehydratase, a cyclohexane-1,2-diol dehydrogenase, and a cyclohexane-1,2-diol dehydratase. A pathway includes a 3-oxopimelate decarboxylase, a 4-acetylbutyrate dehydratase, a 3-hydroxycyclohexanone dehydrogenase, a 2-cyclohexenone hydratase, a cyclohexanone dehydrogenase and an enzyme selected from a 3-oxopimeloyl-CoA synthetase, a 3-oxopimeloyl-CoA hydrolase (acting on thioester), and a 3-oxopimeloyl-coA transferase. Each these pathways can include a PEP carboxykinase. A method for producing cyclohexanone includes culturing these non-naturally occurring microbial organisms.
一种非自然生成的微
生物体具有包括至少一个外源性核酸编码的
环己酮途径酶的
环己酮途径。该途径包括2-酮
环己烷-1-
羧酸-CoA
水解酶(作用于C-C键)、2-酮
环己烷-1-
羧酸脱羧酶和从2-酮
环己烷-1-
羧酸-CoA
水解酶(作用于
硫酯)、2-酮
环己烷-1-
羧酸转移酶和2-酮
环己烷-1-
羧酸-CoA合成酶中选择的酶。该途径包括从6-酮环己-1-烯-1-
羧酸-CoA
水解酶(作用于C-C键)、6-酮环己-1-烯-1-
羧酸-CoA合成酶、6-酮环己-1-烯-1-
羧酸-CoA
水解酶(作用于
硫酯)、6-酮环己-1-烯-1-
羧酸转移酶、6-酮环己-1-烯-1-
羧酸还原酶、6-酮环己-1-烯-1-
羧酸脱羧酶、6-酮环己-1-烯-1-
羧酸还原酶、2-酮
环己烷-1-
羧酸-CoA合成酶、2-酮
环己烷-1-
羧酸转移酶、从2-酮
环己烷-1-
羧酸-CoA
水解酶(作用于
硫酯)、2-酮
环己烷-1-
羧酸脱羧酶和
环己酮脱氢酶中选择的酶。该途径包括
己二酸半醛脱
水酶、
环己烷-1,2
-二醇脱氢酶和
环己烷-1,2
-二醇脱
水酶。该途径包括3-氧
戊二酸脱羧酶、4-乙酰
丁酸脱
水酶、3-羟基
环己酮脱氢酶、2-
环己烯酮
水合酶、
环己酮脱氢酶和从3-氧戊二酰-CoA合成酶、3-氧戊二酰-CoA
水解酶(作用于
硫酯)和3-氧戊二酰-CoA转移酶中选择的酶。这些途径中每个途径都可以包括PEP
羧酸激酶。一种制备
环己酮的方法包括培养这些非自然生成的微
生物体。