摘要:
The invention relates to optimised micro-organism strains for the biotransformation production of molecules having NADPH-consuming biosynthetic pathways. The inventive strains can be used in NADPH-consuming biotransformation methods. Said strains are characterized in that one or more NADPH-oxidizing activities are limited.
摘要:
The invention relates to optimised micro-organism strains for the biotransformation production of molecules having NADPH-consuming biosynthetic pathways. The inventive strains can be used in NADPH-consuming biotransformation methods. Said strains are characterised in that one or more NADPH-oxidising activities are limited.
摘要:
The present invention relates to the use of recombinant homoserine transsuccinylase enzymes with altered feedback sensitivity (MetA*) and possibly recombinant S-adenosyl methionine synthetase enzymes with reduced activity (MetK*) for the production of methionine, its precursors or derivatives thereof.
摘要:
The present invention relates to a method for the production of methionine or its derivatives by culturing a microorganism in an appropriate culture medium comprising a source of carbon and a source of sulphur. The microorganism and/or the culture medium and/or the process parameters were modified in a way that the accumulation of the by-product N-acyl-methionine (NAM) is reduced. The isolation of methionine or its derivatives from the fermentation medium is also claimed.
摘要:
The present invention is directed to a method for the preparation of evolved microorganisms permitting the creation or modification of metabolic pathways. Strains of evolved microorganisms and evolved genes obtained by the method are also provided. The invention is also directed to the use of evolved microorganisms, genes or proteins in a biotransformation process.
摘要:
The present invention relates to the use of recombinant homoserine transsuccinylase enzymes with altered feedback sensitivity (MetA*) and possibly recombinant S-adenosyl methionine synthetase enzymes with reduced activity (MetK*) for the production of methionine, its precursors or derivatives thereof.
摘要:
A method of producing methionine, derivatives or precursors thereof comprising culturing a microorganism modified to enhance production of cysteine in a culture medium comprising a source of carbon and a source of sulfur and recovering methionine from the culture medium. A microorganism for fermentative production of methionine or its derivatives in which production of methionine or derivatives thereof, wherein the microorganism enhances production of cysteine.
摘要:
A method of producing methionine, derivatives or precursors thereof comprising culturing a microorganism modified to enhance production of cysteine in a culture medium comprising a source of carbon and a source of sulfur and recovering methionine from the culture medium. A microorganism for fermentative production of methionine or its derivatives in which production of methionine or derivatives thereof, wherein the microorganism enhances production of cysteine.
摘要:
The present invention concerns a new method for the biological preparation of 2-hydroxy-isobutyrate (2-HIBA), including a fermentation method with microorganisms modified to favour production of 2-HIBA from renewable resources. The invention also concerns the modified microorganisms used in such fermentation method.
摘要:
The present invention concerns a new method for the biological preparation of a diol comprising culturing a microorganism genetically modified for the bioproduction of an aliphatic diol, wherein the microorganism comprises a metabolic pathway for the decarboxylation of a hydroxy-2-keto-aliphatic acid metabolite with an enzyme having a 2-keto acid decarboxylase activity, the product obtained from said decarboxylation step being further reduced into the corresponding aliphatic diol, and wherein the microorganism is genetically modified for the improved production of said hydroxy-2-keto-aliphatic acid metabolite.The invention also concerns a modified microorganism for the production of an aliphatic diol.