PRODUCTION OF POLYUNSATURATED FATTY ACIDS IN OLEAGINOUS YEASTS
    72.
    发明申请
    PRODUCTION OF POLYUNSATURATED FATTY ACIDS IN OLEAGINOUS YEASTS 审中-公开
    在油脂中生产多糖脂肪酸

    公开(公告)号:US20090233347A1

    公开(公告)日:2009-09-17

    申请号:US12469494

    申请日:2009-05-20

    IPC分类号: C12N1/19 C07C57/00

    摘要: The present invention relates to methods for the production of ω-3 and/or ω-6 fatty acids in oleaginous yeast. Thus, desaturases and elongases able to catalyze the conversion of linoleic acid (LA) to γ-linolenic acid (GLA); α-linoleic acid (ALA) to stearidonic acid (STA); GLA to dihomo-γ-linoleic acid (DGLA); STA to eicosatetraenoic acid (ETA); DGLA to arachidonic acid (ARA); ETA to eicosapentaenoic acid (EPA); DGLA to ETA; EPA to docosapentaenoic acid (DPA); and ARA to EPA have been introduced into the genome of Yarrowia for synthesis of ARA and EPA.

    摘要翻译: 本发明涉及在含油酵母中生产ω-3和/或ω-6脂肪酸的方法。 因此,能够催化亚油酸(LA)转化成γ-亚麻酸(GLA)的去饱和酶和延伸酶; α-亚油酸(ALA)至十八碳四烯酸(STA); GLA至二氢-γ-亚油酸(DGLA); STA至二十碳四烯酸(ETA); DGLA对花生四烯酸(ARA); ETA至二十碳五烯酸(EPA); DGLA到ETA; EPA至二十二碳五烯酸(DPA); 并且ARA至EPA已被引入耶氏酵母的基因组合成ARA和EPA。

    Acyltrasferases for alteration of polyunsaturated fatty acids and oil content in oleaginous yeasts
    74.
    发明申请
    Acyltrasferases for alteration of polyunsaturated fatty acids and oil content in oleaginous yeasts 失效
    用于改变多不饱和脂肪酸的酰基转移酶和含油酵母中的油含量

    公开(公告)号:US20080124786A1

    公开(公告)日:2008-05-29

    申请号:US11716162

    申请日:2007-03-09

    摘要: Two acyltransferases are provided, suitable for use in the manufacture of microbial oils enriched in omega fatty acids in oleaginous yeast (e.g., Yarrowia lipolytica). Specifically, the genes encoding phophatidylcholine-diacylglycerol acyltransferase (PDAT) and diacylglycerol acyltransferase (DGAT2) have been isolated from Y. lipolytica. These genes encode enzymes that participate in the terminal step in oil biosynthesis in yeast. Each is expected to play a key role in altering the quantity of polyunsaturated fatty acids produced in oils of oleaginous yeasts.

    摘要翻译: 提供两种酰基转移酶,适用于制造含油酵母(例如解脂耶氏酵母)富含ω-脂肪酸的微生物油。 具体地说,从解脂耶氏酵母中分离出编码磷脂酰胆碱 - 二酰基甘油酰基转移酶(PDAT)和二酰基甘油酰基转移酶(DGAT2)的基因。 这些基因编码酵母中参与油生物合成的最终步骤的酶。 预计每一种在改变油质酵母油中产生的多不饱和脂肪酸的量方面起关键作用。

    FUNGAL DELTA 12 DESATURASE AND DELTA 15 DESATURASE MOTIFS

    公开(公告)号:US20070254299A1

    公开(公告)日:2007-11-01

    申请号:US11740298

    申请日:2007-04-26

    摘要: The present invention relates to fungal Δ12 desaturases (responsible for conversion of oleic acid to linoleic acid (18:2, LA)) and Δ15 fatty acid desaturases (responsible for conversion of LA to α-linolenic acid (18:3, ALA)). Amino acid motifs diagnostic of Δ12 desaturases and Δ15 desaturases are also provided. Methods of altering enzyme specificity towards Δ12 desaturation or towards Δ15 desaturation and/or increasing production of specific ω-3 and ω-6 fatty acids by over-expression of the fungal desaturases are also described.

    摘要翻译: 本发明涉及真菌Delta12去饱和酶(负责将油酸转化为亚油酸(18:2,LA))和Δ15脂肪酸去饱和酶(负责将LA转化成α-亚麻酸(18:3,ALA)) 。 还提供了Delta12去饱和酶和Δ15去饱和酶的氨基酸图案诊断。 还描述了通过过度表达真菌去饱和酶改变酶特异性对Delta12去饱和或Delta5去饱和和/或增加特定ω-3和ω-6脂肪酸的产生的方法。

    Method of controlling gene silencing using site specific recombination
    76.
    发明授权
    Method of controlling gene silencing using site specific recombination 失效
    使用位点特异性重组控制基因沉默的方法

    公开(公告)号:US07267979B2

    公开(公告)日:2007-09-11

    申请号:US10611748

    申请日:2003-06-30

    申请人: Narendra S. Yadav

    发明人: Narendra S. Yadav

    IPC分类号: C12N15/82 C12N5/10 A01H5/00

    CPC分类号: C12N15/8218 C12N15/8213

    摘要: This invention relates to methods of controlling gene silencing using site-specific recombination. A variety of constructs are provided which are useful for conditional or regulated gene silencing in plants, comprising a suite of constitutive, inducible, tissue-specific or developmental stage-specific promoters operably linked to target sequences (TS). Recombinase inversion or excision yields double-stranded TS RNA, which thereby functions to trigger endogenous gene silencing mechanisms. By matching promoters, responsive to various inducers, plant tissues or plant developmental states with the recombinase systems, transcriptional stop fragments or introns and target sequences, gene silencing of virtually any target sequence may be modulated at any plant development stage or in any plant generation. This is especially useful, when genes responsible for gene silencing are down-regulated to permit expression of particular transgenes at levels greater than permitted when gene silencing is activated.

    摘要翻译: 本发明涉及使用位点特异性重组来控制基因沉默的方法。 提供了可用于植物中条件或调节基因沉默的各种构建体,其包含与靶序列(TS)可操作地连接的组合的一组组成型,诱导型组织特异性或发育阶段特异性启动子。 重组酶反转或切除产生双链TS RNA,从而起到引发内源性基因沉默机制的作用。 通过匹配启动子,响应于各种诱导剂,植物组织或植物发育状态与重组酶系统,转录终止片段或内含子和靶序列,几乎任何靶序列的基因沉默可以在任何植物发育阶段或任何植物生成中调节。 当基因沉默的基因被下调以允许特异转基因在基因沉默被激活时大于许可的水平表达时,这是特别有用的。