摘要:
The present invention relates to microorganisms of corynebacterium which can utilize xylose and to a method for producing L-lysine using same. More particularly, the present invention relates to microorganisms of corynebacterium which are modified, in which genes encoding xylose isomerase and xylulokinase which are xylose synthases are introduced to express the xylose synthases. The present invention also relates to a method for producing L-lysine, comprising a step of culturing the modified microorganisms of corynebacterium using xylose as a carbon source, and recovering L-lysine from the culture.
摘要:
본 발명은 자일로즈 이용능이 부여된 코리네박테리움 속 미생물 및 이를 이용한 L-라이신의 생산방법에 관한 것으로, 구체적으로 본 발명은 자일로즈 합성효소인 자일로즈 이소머라제 및 자일룰로키나제를 코딩하는 유전자가 도입되어 상기 효소를 발현하도록 변이된 코리네박테리움 속 미생물 및 상기 변이된 코리네박테리움 속 미생물을 자일로즈를 탄소원으로 사용하여 배양하고, 상기 배양물로부터 L-라이신을 회수하는 단계를 포함하는 L-라이신의 생산방법에 관한 것이다.
摘要:
The present disclosure relates to the production of highly efficient heterologous pathways in host cells by identifying favorable enzyme and/or promoter combinations. In particular the present disclosure provides methods for assembly and selection of multi-step xylose and arabinose/xylose utilization pathways from a library of fungal enzymes. The present disclosure further provides compositions containing favorable enzyme combinations, as well as recombinant yeast expressing such combinations, and methods of use for bioconversion of pentose sugars. Also provided are compositions and methods involving favorable expression patterns identified by utilization of combinations of promoters of varying strengths. Provided herein are methods for assembly and selection of multi-step xylose, arabinose/xylose, and cellobiose utilization pathways from a library of promoters of varying strengths. The present disclosure further provides compositions containing heterologous enzyme-coding polynucleotides under the control of favorable promoters, as well as recombinant yeast expressing such enzymes, and methods of their use for bioconversion of pentose and/or hexose sugars.
摘要:
Methods and compositions for the production of ethanol from lignocellulosic starting materials are provided herein. Embodiments provide yeast cells of the genus H. polymorpha with one or more modifications, including, for example, an inactive acid trehalase gene, overexpression of xylulokinase, and/or overexpression of heat-shock protein 104.
摘要:
The present invention relates to a new xylose utilizing Saccharomyces cerevisiae strain being able to utilize xylose for ethanol production which strain is up-regulated with regard to the genes for xylose reductase (XR) and xylulose dehydrogenase (XDH) as well as xululokinase (XK) and over-expressing the non-oxidative pentose phosphate pathway (PPP) and comprising a deletion of the gene GRE3 deletion, as well as the strain has been adapted to xylose feeding.
摘要:
Yeast cells are transformed with an exogenous xylose isomerase gene. Additional genetic modifications enhance the ability of the transformed cells to ferment xylose to ethanol or other desired fermentation products. Those modifications', include deletion of non-specific or specific aldose reductase gene(s), deletion of xylitol dehydrogenase gene(s) and/or overexpression of xylulokinase.