title: Production of short-chain-length/medium-chain-length polyhydroxyalkanoate (PHA) copolymer in the plastid of Arabidopsis thaliana using an engineered 3-ketoacyl-acyl carrier protein synthase III.
abstract: Short-chain-length/medium-chain-length (SCL/MCL) polyhydroxyalkanoate (PHA) was produced in the plastids of Arabidopsis thaliana. Phe87Thr (F87T) mutated 3-ketoacyl-acyl carrier protein (ACP) synthase III (FabH) from Escherichia coli , and Ser325Thr/Gln481Lys (ST/QK) mutated polyhydroxyalkanoate (PHA) synthase (PhaC1) from Pseudomonas sp. 61-3, along with the beta-ketothiolase (PhaA) and acetoacetyl-CoA reductase (PhaB) from Ralstonia eutropha (Cupriavidus necator) genes were introduced into Arabidopsis. The transgenic Arabidopsis produced PHA copolymers composed of monomers consisting of 4-14 carbons. The introduction of the engineered PHA synthase resulted in a 10-fold increase in PHA content compared to plants expressing the wild-type PHA synthase. In addition, expression of the engineered fabH gene in the plastid led to an increase in the amount of the SCL monomer, 3-hydroxybutyrate, incorporated into PHA, and contributed to supply of MCL monomers for PHA production.
authors.affiliation: Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo 060-8628, Japan. mken@eng.hokudai.ac.jp
authors.forename: Ken'ichiro
authors.initials: K
authors.lastname: Matsumoto
authors.forename: Takaaki
authors.initials: T
authors.lastname: Murata
authors.forename: Rina
authors.initials: R
authors.lastname: Nagao
authors.forename: Christopher T
authors.initials: CT
authors.lastname: Nomura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Arai
authors.forename: Yuko
authors.initials: Y
authors.lastname: Arai
authors.forename: Kazuma
authors.initials: K
authors.lastname: Takase
authors.forename: Hideo
authors.initials: H
authors.lastname: Nakashita
authors.forename: Seiichi
authors.initials: S
authors.lastname: Taguchi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Shimada
mesh_terms: D020155:3-Hydroxybutyric Acid / Q000378:metabolism; D015099:3-Oxoacyl-(Acyl-Carrier-Protein) Synthase / Q000235:genetics / Q000378:metabolism*; D000102:Acetyl-CoA C-Acyltransferase / Q000235:genetics / Q000378:metabolism; D000429:Alcohol Oxidoreductases / Q000235:genetics / Q000378:metabolism; D017360:Arabidopsis / Q000201:enzymology* / Q000235:genetics; D020118:Cupriavidus necator / Q000201:enzymology / Q000235:genetics; D004926:Escherichia coli / Q000201:enzymology* / Q000235:genetics; D005818:Genetic Engineering; D030821:Plants, Genetically Modified; D018087:Plastids / Q000201:enzymology* / Q000235:genetics; D054813:Polyhydroxyalkanoates / Q000737:chemistry / Q000378:metabolism*; D011108:Polymers / Q000737:chemistry* / Q000378:metabolism; D015202:Protein Engineering; D011549:Pseudomonas / Q000201:enzymology / Q000235:genetics; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D018749:RNA, Plant / Q000235:genetics / Q000378:metabolism; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D054813:Polyhydroxyalkanoates; D011108:Polymers; D012333:RNA, Messenger; D018749:RNA, Plant; D011994:Recombinant Proteins; D000429:Alcohol Oxidoreductases; C023744:acetoacetyl-CoA reductase; D000102:Acetyl-CoA C-Acyltransferase; C077402:3-ketoacyl-acyl carrier protein synthase III; D015099:3-Oxoacyl-(Acyl-Carrier-Protein) Synthase; D020155:3-Hydroxybutyric Acid