Process for the biological production of 1,3-propanediol...

C - Chemistry – Metallurgy – 12 – N

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C12N 1/21 (2006.01) C12N 9/04 (2006.01) C12N 9/12 (2006.01) C12N 9/90 (2006.01) C12N 15/52 (2006.01) C12N 15/70 (2006.01) C12P 7/18 (2006.01)

Patent

CA 2380616

The present invention provides an improved method for the biological production of 1,3-propanediol from a fermentable carbon source in a single microorganism. In one aspect of the present invention, an improved process for the conversion of glucose to 1,3-propanediol is achieved by the use of an E. coli transformed with the Klebsiella pneumoniae dha regulon genes dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3, and orfZ, all these genes arranged in the same genetic organization as found in wild type Klebsiella pneumoniae. In another aspect of the present invention, an improved process for the production of 1,3-propanediol from glucose using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, and a dehydratase reactivation factor compared to an identical process using a recombinant E. coli containing genes encoding a G3PDH, a G3P phosphatase, a dehydratase, a dehydratase reactivation factor and a 1,3-propanediol oxidoreductase (dhaT). The dramatically improved process relies on the presence in E. Coli of a gene encoding a non-specific catalytic activity sufficient to convert 3-hydroxypropionaldehyde to 1,3-propanediol.

L'invention concerne un procédé amélioré de production biologique de 1,3-propanediol à partir d'une source de carbone fermentable dans un seul micro-organisme. Dans un aspect de l'invention, un procédé amélioré de conversion de glucose en 1,3-propanediol est mis en oeuvre au moyen d'E. coli transformé à l'aide des gènes de régulon de Klebsiella pneumoniae dha : dhaR, orfY, dhaT, orfX, orfW, dhaB1, dhaB2, dhaB3 et orfZ, tous ces gènes présentant la même organisation génétique que celle du type sauvage de Klebsiella pneumoniae. Un autre aspect de l'invention concerne un procédé amélioré de production de 1,3-propanediol à partir de glucose, utilisant un E. coli recombiné qui contient des gènes codant pour G3PDH, une G3P phosphatase, une déshydratase, et un facteur de réactivation de déshydratase, qui est comparable à un procédé identique utilisant un E. coli recombiné qui contient des gènes codant pour G3PDH, une G3P phosphatase, une déshydratase, un facteur de réactivation de déshydratase et une 1,3-propanediol oxydoréductase (dhaT). Le procédé considérablement amélioré est fondé sur la présence, chez E. coli, d'un gène codant pour une activité catalytique non spécifique suffisante pour convertir du 3-hydroxypropionaldéhyde en 1,3-propanediol.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process for the biological production of 1,3-propanediol... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the biological production of 1,3-propanediol..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the biological production of 1,3-propanediol... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1718466

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.