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    • 3. 发明公开
    • Expression control elements from the Lemnaceae family
    • 来自Lemnaceae家族的表达控制元件
    • EP2325197A2
    • 2011-05-25
    • EP11154225.4
    • 2007-01-17
    • Biolex Therapeutics, Inc.
    • Dickey, Lynn F.Cox, Kevin M.Peele, Charles G.
    • C07K14/415C12N15/82A01H5/00
    • C12N15/8216C07K14/415C12N9/2442C12N9/88C12N15/8221C12N15/8222C12N15/8223C12Y302/01014C12Y401/01039
    • Compositions and methods for regulating expression of nucleotide sequences of interest in a plant are provided. Compositions include novel nucleic acid molecules, and variants and fragments thereof, for expression control elements isolated from the Lemnaceae ubiquitin, r-histone and chitinase genes. A method for expressing a nucleotide sequence of interest in a plant using the expression control elements disclosed herein is further provided. The method includes introducing into a plant or plant cell or nodule an expression construct comprising an expression control element of the present invention operably linked to a nucleotide sequence of interest. In particular, the compositions and methods find use in enhancing expression of nucleotide sequences of interest in duckweed. Also provided is a novel Lemnaceae signal peptide-encoding sequence and the signal peptide encoded thereby. Where an expression construct of the invention is designed to express a polypeptide of interest, this novel signal peptide-encoding sequence can be included within the expression construct of the invention to provide for extracellular secretion of the encoded polypeptide of interest.
    • 提供了用于调节植物中目的核苷酸序列表达的组合物和方法。 组合物包括新颖核酸分子及其变体和片段,用于从宇木科泛素,r-组蛋白和几丁质酶基因分离的表达控制元件。 进一步提供了使用本文公开的表达控制元件在植物中表达感兴趣的核苷酸序列的方法。 该方法包括向植物或植物细胞或结节中导入包含与感兴趣的核苷酸序列可操作连接的本发明的表达控制元件的表达构建体。 具体而言,所述组合物和方法可用于增强浮萍中感兴趣的核苷酸序列的表达。 还提供了一种新颖的Lemnaceae信号肽编码序列和由此编码的信号肽。 当设计本发明的表达构建体以表达感兴趣的多肽时,可将此新信号肽编码序列包括在本发明的表达构建体内以提供所编码的目的多肽的细胞外分泌。
    • 5. 发明授权
    • PROCESS FOR GENERATION OF PROTEIN AND USES THEREOF
    • 产生蛋白质的方法及其用途
    • EP2079755B1
    • 2017-08-30
    • EP07815347.5
    • 2007-10-10
    • The Australian National University
    • GREADY, Jill, E.KANNAPPAN, Babu
    • C07K1/00C07K14/415C12N15/64C07H21/04C12N15/29
    • C12N9/88C07K1/00C07K1/13C07K1/16C07K1/18C07K1/36C07K14/415C07K2299/00C12N15/1089C12Y401/01039
    • A method of generating a protein with an improved functional property, the method comprising: (a) identifying at least one Target amino acid Residue in a first protein, wherein said Target amino acid Residue is associated with said functional property; (b) comparing at least one homologous second protein from the same or a different phylogenetic branch as the first protein with the first protein and identifying at least one Variant amino acid Residue between the first protein and the second protein; (c) selecting at least one Candidate amino acid Residue from the Variant amino acid Residue identified in (b) on the basis of said Candidate amino acid Residue affecting said Target amino acid Residue with respect to said functional property; (d) forming at least one Candidate Mutant protein in silico or producing at least one Candidate Mutant protein in vitro in which said at least one Candidate amino acid Residue from the second protein substitutes a corresponding residue in the first protein; and (e) screening said at least one Candidate Mutant protein produced in (d) to identify a protein having said improved functional property.
    • 产生具有改善的功能性质的蛋白质的方法,所述方法包括:(a)鉴定第一蛋白质中的至少一个靶氨基酸残基,其中所述靶氨基酸残基与所述功能性质相关; (b)将来自与第一蛋白质相同或不同的系统发生分支的至少一种同源第二蛋白质与第一蛋白质进行比较,并鉴定第一蛋白质与第二蛋白质之间的至少一种变体氨基酸残基; (c)基于影响所述靶氨基酸残基的所述候选氨基酸残基,根据所述功能性选择来自(b)中鉴定的变体氨基酸残基的至少一种候选氨基酸残基; (d)在计算机上形成至少一种候选突变蛋白或在体外产生至少一种候选突变蛋白,其中所述至少一种来自第二蛋白的候选氨基酸残基取代第一蛋白中的相应残基; 和(e)筛选(d)中产生的所述至少一种候选突变体蛋白质以鉴定具有所述改进的功能性质的蛋白质。