摘要:
Microorganisms and processes for the recombinant manufacture of clavine-type alkaloids such as cycloclavine, festuclavine, agroclavine, chanoclavine and chanoclavine aldehyde, as well as polypeptides, polynucleotides and vectors comprising such polynucleotides which can be applied in a method for the manufacture of clavine-type alkaloids are provided.
摘要:
The present invention relates to an improved process for isolating aliphatic, mono- or polycyclic small molecules, in particular, Cycloclavine or Cornexistin and/or Hydroxycornexistin, from the aqueous fermentation broth of a eukaryotic microorganism. Said process comprises contacting a liquid phase of said fermentation broth containing said active ingredient with a suitable adsorbent, desorbing said active ingredient from said adsorbent, optionally performing a second chromatographic purification step, and isolating the active ingredient in substantially pure form. The thus obtained purified small molecules may be further used in biocidal, i.p. insecticidal or herbicidal compositions.
摘要:
The present invention relates to a recombinant nucleic acid molecule, a recombinant microorganism, to a method for producing alanine and to the use of the recombinant nucleic acid molecule or the recombinant microorganism for the fermentative production of alanine.
摘要:
The present invention relates to genetically modified microorganisms capable of producing beta-glucans, characterized in that said genetically modified microorganism overexpresses (i) a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity, and/or (ii) a polypeptide having 1,3-&bgr;-D-glucan synthase-activity, compared to a corresponding non-modified control microorganism of the same strain. The present invention also relates to the use of a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity or the use of such a polypeptide for producing &bgr;-glucans. Furthermore, the present invention relates to methods for producing &bgr;-glucans comprising the introduction of a promoter upstream of a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity thereby increasing the expression of said polynucleotide, or a polynucleotide encoding a polypeptide having 1,3-&bgr;-D-glucan synthase-activity into a microorganism being able to synthesize &bgr;-glucans.
摘要:
The present invention relates to bacterial strains, capable of utilizing glycerol as a carbon source for the fermentative production of succinic acid, wherein said strains are genetically modified so that they comprise a deregulation of their endogenous pyruvate-formate-lyase enzyme activity, as well as to methods of producing organic acids, in particular succinic acid, by making use of such microorganism. The present invention also relates to the downstream processing of the produced organic acids by cation exchange chromatography.
摘要:
The present invention relates to a novel method for the fermentative production of dipicolinate by cultivating a recombinant microorganism expressing an enzyme having dipicolinate synthetase activity. The present invention also relates to corresponding recombinant hosts, recombinant vectors, expression cassettes and nucleic acids suitable for preparing such hosts as well as a method of preparing polyester or polyamide copolymers making use of dipicolinate as obtained by fermentative production.
摘要:
The present invention pertains to improved microorganisms and methods for the production of methionine and other sulfur containing fine chemicals using the metl gene from Bacillus subtilis or a gene related to metI. In some embodiments of the present invention, the metI gene or another gene is integrated in a fashion that allows for co-production of a water soluble compound such as methionine or other amino acid and a caortenoid compound.
摘要:
The present invention relates to a modified microorganism having, compared to its wild-type, a reduced activity of the enzyme that is encoded by the pykA-gene. The present invention also relates to a method for producing an organic compound and to the use of modified microorganisms.