RU93042475A - CELL, STRAIN, METHOD OF OBTAINING STRAIN - Google Patents

CELL, STRAIN, METHOD OF OBTAINING STRAIN

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Publication number
RU93042475A
RU93042475A RU93042475/13A RU93042475A RU93042475A RU 93042475 A RU93042475 A RU 93042475A RU 93042475/13 A RU93042475/13 A RU 93042475/13A RU 93042475 A RU93042475 A RU 93042475A RU 93042475 A RU93042475 A RU 93042475A
Authority
RU
Russia
Prior art keywords
segment
strain
host cells
increased expression
ethanol
Prior art date
Application number
RU93042475/13A
Other languages
Russian (ru)
Inventor
О.Ингрэм Лонни
Охта Казуйоси
Original Assignee
Юниверсити Оф Флорида
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Юниверсити Оф Флорида filed Critical Юниверсити Оф Флорида
Publication of RU93042475A publication Critical patent/RU93042475A/en

Links

Claims (1)

Получены клетки-хозяева, содержащие (А) гетерологичный кодирующий полипептид полинуклеотидный сегмент, стабильно интегрированный в хромосому, который находится под транскрипционным контролем эндогенного промотора, и (Б) мутацию, которая обеспечивает повышенную экспрессию гетерологичного сегмента, приводя в результате к повышенной продукции клетками-хозяевами каждого полипептида, кодируемого этим сегментом, относительно продукции каждого полипептида клетками-хозяевами в отсутствие мутации. Повышенная экспрессия, достигнутая таким образом, сохраняется в отсутствие условий, которые обеспечивают селекцию клеток, проявляющих повышенную экспрессию. Когда интегрированный сегмент включает, например гены продукции этанола из эффективного продуцента этанола, подобного Zumomonas mobilis, рекомбинантная Escherichia coli и другие энтеробактериальные клетки согласно изобретению способны к эффективному превращению широкого ряда сахаров, получаемых из биомассы, в этанол.Host cells containing (A) a heterologous polypeptide-encoding polynucleotide segment stably integrated into a chromosome that is under the transcriptional control of the endogenous promoter, and (B) a mutation that provides increased expression of the heterologous segment, resulting in increased production by host cells of each polypeptide encoded by this segment, relative to the production of each polypeptide by host cells in the absence of mutation. The increased expression thus achieved is maintained in the absence of conditions that allow for the selection of cells exhibiting increased expression. When an integrated segment includes, for example, ethanol production genes from an efficient ethanol producer like Zumomonas mobilis, recombinant Escherichia coli and other enterobacterial cells of the invention are capable of efficiently converting a wide range of sugars derived from biomass into ethanol.
RU93042475/13A 1990-12-07 1991-12-04 CELL, STRAIN, METHOD OF OBTAINING STRAIN RU93042475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US624227 1990-12-07

Publications (1)

Publication Number Publication Date
RU93042475A true RU93042475A (en) 1996-03-10

Family

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