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    • 4. 发明授权
    • Method of determination of gene function
    • 测定基因功能的方法
    • US06673567B2
    • 2004-01-06
    • US09808658
    • 2001-03-15
    • Pamela L. SharpeVasantha Nagarajan
    • Pamela L. SharpeVasantha Nagarajan
    • C12Q100
    • C12N15/1082C12N15/1079C12Q1/6897
    • The present method is useful for the identification of genes, ORF's and other nucleic acid molecules which are essential for the expression of a specific phenotype in microorganisms. The method employs In vitro transposition in conjunction with an chromosomal integration vector containing a specific gene or genetic element whose function is unknown. Subsequent transformation of a recombination proficient host with the vector and growth first under non-integrating conditions and then under integrating conditions, followed by a selection screen for either single or double crossover events results in transformants that may be subjected to phenotypic screens to determine gene function.
    • 本发明方法可用于鉴定在微生物中表达特定表型所必需的基因ORF和其它核酸分子。 该方法使用体外转座与包含功能未知的特定基因或遗传元件的染色体整合载体。 随后,在非整合条件下,然后在整合条件下,首先用载体和生长进行重组熟练宿主的转化,然后在单一或双交换事件的选择筛选中导致可以进行表型筛选以确定基因功能的转化体 。
    • 5. 发明授权
    • Optimized strains of yarrowia lipolytica for high eicosapentaenoic acid production
    • 优化的解脂耶氏酵母菌株用于高二十碳五烯酸生产
    • US08637298B2
    • 2014-01-28
    • US12814815
    • 2010-06-14
    • Seung-Pyo HongPamela L. SharpeZhixiong XueNarendra S. YadavQuinn Qun Zhu
    • Seung-Pyo HongPamela L. SharpeZhixiong XueNarendra S. YadavQuinn Qun Zhu
    • C12N1/00
    • C12N9/1029A21D2/165A23K20/158C12N9/00C12N9/13C12N9/93C12P7/6427C12P7/6472C12P7/6481
    • Described are engineered strains of the oleaginous yeast Yarrowia lipolytica capable of producing an oil comprising greater than 50 weight percent of eicosapentaenoic acid [“EPA”], an ω-3 polyunsaturated fatty acid, measured as a weight percent of total fatty acids [“% TFAs”] and having a ratio of at least 3.1 of EPA % TFAs, to linoleic acid, measured as % TFAs. These strains over-express at least one Δ9 elongase/Δ8 desaturase multizyme, in addition to other heterologous Δ9 elongases, Δ8 desaturases, Δ5 desaturases, Δ17 desaturases, Δ12 desaturases, C16/18 elongases, and optionally over-express diacylglycerol cholinephosphotransferases, malonyl CoA synthetases and/or acyl-CoA lysophospholipid acyltransferases. The expression of at least one peroxisome biogenesis factor protein is down-regulated. Methods for producing EPA within said host cells, oils obtained from the cells, and products therefrom are claimed.
    • 描述了能够产生包含大于50重量%的二十碳五烯酸[“EPA”]的油的油质酵母解脂耶氏酵母解脂耶氏酵母的工程菌株,其是以总脂肪酸的重量百分比测量的ω-3多不饱和脂肪酸[“% TFAs“],并且具有至少3.1%的EPA%TFA与比率为TFA的亚油酸的比率。 除了其他异源Delta9延伸酶,Delta8去饱和酶,Δ5去饱和酶,Δ17去饱和酶,Δ12去饱和酶,C16 / 18延长酶和任选的过表达二酰基甘油胆碱磷酸转移酶,丙二酰辅酶A,这些菌株过表达至少一种Δ9延伸酶/Δδ去饱和酶多酶 合成酶和/或酰基辅酶A溶血磷脂酰基转移酶。 至少一种过氧化物酶体生物因子蛋白的表达下调。 要求在所述宿主细胞内生产EPA的方法,从细胞获得的油及其产物。