摘要:
The present invention relates to a cell suitable for production of one or more fermentation product from a sugar composition comprising glucose, galactose, arabinose and xylose, wherein the cell comprises two to fifteen copies of one or more xylose isomerase gene or two to fifteen copies of one or more xylose reductase and xylitol 10 dehydrogenase, and two to ten copies of araA, araB and araD, genes, wherein these genes are integrated into the cell genome.
摘要:
The invention relates to a cell which comprises a nucleotide sequence encoding a xylose isomerase, wherein the amino acid sequence of the xylose isomerase has at least about 70% sequence identity to the amino acid sequence set out in SEQ ID NO: 3 and wherein the nucleotide sequence is heterologous to the host. A cell of the invention may be used in a process for producing a fermentation product, such as ethanol. Such a process may comprise fermenting a medium containing a source of xylose with a cell of the invention such that the cell ferments xylose to the fermentation product.
摘要翻译:本发明涉及包含编码木糖异构酶的核苷酸序列的细胞,其中木糖异构酶的氨基酸序列与SEQ ID NO:3中所示的氨基酸序列具有至少约70%的序列同一性,并且其中核苷酸 序列对宿主而言是异源的。 本发明的细胞可用于生产发酵产物如乙醇的方法中。 这种方法可以包括用本发明的细胞发酵含有木糖来源的培养基,使得细胞将木糖发酵成发酵产物。
摘要:
The present invention relates to the field of molecular biology and cell biology. More specifically, the present invention relates to a CRISPR-CAS system for a lipolytic yeast host cell.
摘要:
The invention relates to a process for the production of cells which are capable of converting arabinose, comprising the following steps: a)Introducing into a host strain that cannot convert arabinose, the genes AraA, araB and araD, this cell is designated as constructed cell; b)Subjecting the constructed cell to adaptive evolution until a cell that converts arabinose is obtained, c)Optionally, subjecting the first arabinose converting cell to adaptive evolution to improve the arabinose conversion; the cell produced in step b) or c) is designated as first arabinose converting cell; d)Analysing the full genome or part of the genome of the first arabinose converting cell and that of the constructed cell; e)Identifying single nucleotide polymorphisms (SNP's) in the first arabinose converting cell; and f)Using the information of the SNP's in rational design of a cell capable of converting arabinose; g)Construction of the cell capable of converting arabinose designed in step f).
摘要:
The present invention relates to a cell suitable for production of one or more fermentation product from a sugar composition comprising glucose, galactose, arabinose and xylose, wherein the cell comprises two to fifteen copies of one or more xylose isomerase gene or two to fifteen copies of one or more xylose reductase and xylitol dehydrogenase, and two to ten copies of araA, araB and araD, genes, wherein these genes are integrated into the cell genome.
摘要:
The present invention relates to a process for the production of one or more fermentation product from a sugar composition, comprising the following steps: a) fermentation of the sugar composition in the presence of a yeast belonging to the genera Saccharomyces, Kluyveromyces, Candida, Pichia, Schizosaccharomyces, Hansenula, Kloeckera, Schwanniomyces or Yarrowia,: and b) recovery of the fermentation product, wherein the yeast comprises the genes araA, araB and araD and the sugar composition comprises glucose, galactose and arabinose.