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    • 2. 发明授权
    • Expression of eukaryotic peptides in plant plastids
    • 真核肽在植物质体中的表达
    • US07259293B2
    • 2007-08-21
    • US10917774
    • 2004-08-13
    • Jeffrey M. Staub
    • Jeffrey M. Staub
    • C12N15/82C12N15/62C12N15/18C12N5/04C12N5/10A01H5/00A01H5/10
    • C07K14/61C07K14/8117C07K2319/00C12N15/8214C12N15/8257C12N15/8275
    • Constructs and methods are provided for expressing peptides derived from eukaryotic organisms in plant plastids. Constructs have a promoter functional in a plant plastid, a DNA sequence encoding a peptide derived from an eukaryotic organism and a transcription termination region. Other elements include a selectable marker for selection of plant cells comprising a plastid expressing the marker and DNA regions of homology to the genome of the plastid and optionally a ribosome binding site joined to the promoter. By methods using such constructs high levels of eukaryotic peptides, such as mammalian proteins, are produced in a plant cell by growing plant cells under conditions whereby the DNA encoding sequences are expressed to produce eukaryotic peptide in said plastid.
    • 提供构建体和方法用于表达在植物质体中衍生自真核生物的肽。 构建体在植物质体中具有功能的启动子,编码来自真核生物的肽的DNA序列和转录终止区。 其他元件包括用于选择植物细胞的选择性标记,其包括表达标记的质体和与质体的基因组同源的DNA区以及任选的与启动子连接的核糖体结合位点。 通过使用这种构建体的方法,通过在条件下培养植物细胞,在植物细胞中产生高水平的真核肽,例如哺乳动物蛋白质,由此DNA编码序列被表达以在所述质体中产生真核肽。
    • 10. 发明授权
    • DNA constructs and methods for stably transforming plastids of multicellular plants and expressing recombinant proteins therein
    • 用于稳定转化多细胞植物的质体并在其中表达重组蛋白质的DNA构建体和方法
    • US06388168B1
    • 2002-05-14
    • US09193853
    • 1998-11-18
    • Pal MaligaZora Svab MaligaJeffrey M. Staub
    • Pal MaligaZora Svab MaligaJeffrey M. Staub
    • C12N1529
    • C12N15/8214
    • DNA constructs are provided for stable transformation of plastids of multicellular plants and expression of foreign proteins in plastids. The DNA constructs comprise a transforming DNA which is targeted to a pre-determined location on the plastid genome and inserted into the plastid genome by homologous recombination with targeting segments comprising DNA sequences homologous to the pre-determined region of the plastid genome. The transforming DNA contains a non-lethal selectable marker gene which confers a selectable phenotype on cells having plastids in which substantially all of the genomes therein contain the transforming DNA (i.e., homoplasmic cells or tissues). The transforming DNA further comprises at least one insertion site 4 for an additional DNA segment, such as a gene encoding a protein for improving a characteristic of the transformed plant. The non-lethal selectable marker gene is preferably provided as a chimeric gene by assembly from an expression cassette comprising 5′ and 3′ regulatory segments, preferably derived from plastid genes. A coding segment encoding the non-lethal selectable marker is inserted between the 5′ and 3′ regulatory segments to form the chimeric gene. The non-lethal selectable marker coding segment preferred in the present invention is the coding region of aadA from bacteria, which encodes aminoglycoside 3″-adenylyltransferase to confer spectinomycin and streptomycin resistance.
    • 提供DNA构建体用于稳定转化多细胞植物的质体和外来蛋白质在质体中的表达。 DNA构建体包含转化DNA,其靶向质体基因组上的预定位置并通过与包含与质体基因组的预定区域同源的DNA序列的靶序列同源重组而插入质体基因组。 转化DNA含有非致死性选择标记基因,其在具有质体的细胞上赋予可选择的表型,其中基本上所有的基因组中含有转化DNA(即,均质细胞或组织)。 转化DNA还包含至少一个用于另外的DNA区段的插入位点4,例如编码用于改善转化植物特征的蛋白质的基因。 非致死性选择标记基因优选通过从包含5'和3'调节区段的表达盒组装提供,优选来源于质体基因。 将编码非致死性选择标记的编码区段插入5'和3'调节区段之间以形成嵌合基因。 本发明优选的非致死选择性标记编码区是编码氨基糖苷3'-腺苷酰转移酶的细菌的aadA的编码区,赋予壮观霉素和链霉素抗性。