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    • 19. 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。