Abstract:
:Two Pseudomonas aeruginosa genes, termed phaJ1(Pa) and phaJ2(Pa), homologous to the Aeromonas caviae (R)-specific enoyl-CoA hydratase gene (phaJ(Ac)) were cloned using a PCR technique to investigate the monomer-supplying ability for polyhydroxyalkanoate (PHA) synthesis from beta-oxidation cycle. Two expression plasmids for phaJ1(Pa) and phaJ2(Pa) were constructed and introduced into Escherichia coli DH5alpha strain. The recombinants harboring phaJ1(Pa) or phaJ2(Pa) showed high (R)-specific enoyl-CoA hydratase activity with different substrate specificities, that is, specific for short chain-length enoyl-CoA or medium chain-length enoyl-CoA, respectively. In addition, co-expression of these two hydratase genes with PHA synthase gene in E. coli LS5218 resulted in the accumulation of PHA up to 14-29 wt% of cell dry weight from dodecanoate as a sole carbon source. It has been suggested that phaJ1(Pa) and phaJ2(Pa) products have the monomer-supplying ability for PHA synthesis from beta-oxidation cycle.
journal_name
FEMS Microbiol Lettjournal_title
FEMS microbiology lettersauthors
Tsuge T,Fukui T,Matsusaki H,Taguchi S,Kobayashi G,Ishizaki A,Doi Ydoi
10.1111/j.1574-6968.2000.tb09013.xkeywords:
subject
Has Abstractpub_date
2000-03-15 00:00:00pages
193-8issue
2eissn
0378-1097issn
1574-6968pii
S0378-1097(00)00046-Xjournal_volume
184pub_type
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