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Polyhydroxyalkanoate polymerase

Assignee: Massachusetts Institute of Technology
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Filing: 1992-09-14
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Granted: 1993-10-05
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Expires: 2012-09-14
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Abstract

Abstract A method for controlling and modifying biopolymer synthesis by manipulition of the genetics and enzymology of synthesis of polyhydroxybutyrate (PHB) and polyhydroxyalkanoate (PHA) polyesters at the molecular level in procaryotic and eukaryotic cells, especially plants. Examples demonstrate the isolation, characterization, and expression of the genes involved in the production of PHB and PHA polymers. Genes encoding the enzymes in the PHB and PHA synthetic pathway (beta-ketothiolase, acetoacetyl-CoA reductase and PHB polymerase or PHA polymerase) from Zoogloea ramigera strain I-16-M, Alcaligenes eutrophus, Nocardia salmonicolur, and Psuedomonas olevarans were identified or isolated and expressed in a non-PHB producing organism, E. coli. Specific modifications to the polymers include variation in the chain length of the polymers and incorporation of different monomers into the polymers to produce co-polymers with different physical properties.

Inventors

  • 👤 Oliver P. Peoples
  • 👤 Anthony L. Sinskey

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:07
CPC Classifications
C; C12; C12N; C12N9/00; C12N9/0004; C12N9/0006; C12N15/00; C12N15/09; C12N15/11; C12N15/52; C12N9/10; C12N9/1025; C12N9/1029; C12P; C12P7/00; C12P7/62; C12P7/625

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 8 words
Polyhydroxyalkanoate polymerase expressed from an isolated strucutral gene.
Claim 2
Dependent Claim 8 words
Polyhydroxyalkanoate polymerase expressed from an isolated strucutral gene.
Claim 3
Dependent Claim 17 words
The polyhydroxyalkanoate polymerase of claim 1 encoded by a gene which is expressed naturally in Pseudomonas oleovorans.

References Cited (Backward Citations)

US4477654A Cited

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