摘要:
The present invention relates to novel functional amdS genes from A.niger that can be used as dominant and bi-directional selection marker gene in the transformation of organisms. The present invention further relates to the production of a compound of interest in a fungal host cell transformed with the amdS genes of the invention. Preferred fungal host cells are filamentous fungal cells. The amdS genes of the invention provide means for identification of functional homologues in other Aspergillus species.
摘要:
DSM IP Assets B.V. 24403WO IMPROVED METHOD OF EXPRESSION CLONING IN A HOST CELL 5 ABSTRACT The invention relates to a promoter DNA sequence highly suited in an improved expression cloning method for isolation of DNA sequences comprising a DNA sequence encoding a protein of interest in a host cell and to the improved expression cloning method wherein use is made of this promoter. The isolated DNA sequences are useful in processes for 10 producing a protein of interest.
摘要:
The invention relates to oxalate deficient A. niger strains for the production of a given enzyme, wherein the oxalate deficient strain produces at least the same amount of enzyme as the wild type strain it originates from under the same culture conditions. Preferably, the oxalate deficient A. niger strain produces more enzyme than the wild type strain it originates from under the same culture conditions. More preferably, the oxalate deficient A. niger strain is such that when the strain has been transformed with an expression construct comprising a gene coding for an enzyme, said strain produces at least the amount of the enzyme the wild type strain it originates from would produce under the same culture conditions, when the wild type strain has also been transformed with the same expression construct as the oxalate deficient strain. The invention also relates to method for obtaining such oxalate deficient A. niger strain. The present invention further relates to method for producing an enzyme, wherein an oxalate deficient A. niger strain that produces at least the same amount of enzyme as the wild type strain it originates from under the same culture conditions is used.
摘要:
This invention discloses novel bacterial spore systems. It has now been found surprisingly that under certain conditions bacterial spore systems can be used in the food and feed industry, preferably in animal feeding and as biohybrid material. More precisely applicant has found the following: Genetically modified or genetically engineered viable spore systems expressing bioactive polypeptides, for example bacteriocins and/or enzymatically active feed enzymes, at the spore surface, have a great potential use in animal feeding. Further, it has been found that genetically modified or "genetically engineered inert spore systems expressing affinity ligands or immobilized enzymes at the surface have a great potential use in biocatalysis and in the construction of biocatalytic films. Especially the resistance to harsh chemicals, desiccation, strong pressure, or high temperatures allows the spores to be a potentially valuable tool for the display of bioactive molecules, like biocatalytic enzymes or bioactive feed enzymes that must survive harsh conditions to deliver their full potential. Finally, applicant has found that instead of translational fusions to spore structural genes as it is known from the prior art described above, passenger bioactive polypeptides, as for example enzymes, bacteriocins, affinity ligands, can also be fused to spore-specific surface enzymes, for example to spore specific enzymes as mentioned herein above.
摘要:
The present invention relates to isolated fungal promoter DNA sequences, to DNA constructs, vectors, and fungal host cells comprising these promoters in operative association with coding sequences encoding polypeptides. The present invention also relates to methods for expressing a gene and/or producing a polypeptide using the new promoters isolated. The present invention also relates to methods for altering the transcription level and/or regulation of an endogenous gene using the new promoter of the invention.
摘要:
The present invention relates to isolated fungal promoter DNA sequences, to DNA constructs, vectors, and fungal host cells comprising these promoters in operative association with coding sequences encoding polypeptides. The present invention also relates to methods for expressing a gene and/or producing a polypeptide using the new promoters isolated. The present invention also relates to methods for altering the transcription level and/or regulation of an endogenous gene using the new promoter of the invention.
摘要:
The present invention relates to a process for the production of a food product whereby an intermediate form of said food product comprises a pigment, which process comprises adding at least one enzyme that is effective in directly converting said pigment into a form which results in increasing the whiteness of at least part of the food product compared to the food product for which said enzyme is not added during its production. The invention also relates to food products obtained from the process of the invention.