Method for engineering strand-specific, sequence-specific, DNA-nicking enzymes

    公开(公告)号:US07081358B2

    公开(公告)日:2006-07-25

    申请号:US10223074

    申请日:2002-08-16

    IPC分类号: C12N15/55 C12N9/22

    CPC分类号: C12N9/22

    摘要: Methods are provided for converting into a sequence specific strand specific and location specific DNA nicking endonuclease, a restriction endonuclease that recognizes an asymmetric DNA sequence, the endonuclease having two catalytic sites and one or more single sequence specific DNA-binding domains. In one embodiment the method requires inactivating one of the catalytic sites of the restriction endonuclease. In another embodiment, the restriction endonuclease is a dimer having a first and second subunit each comprising a sequence specific DNA binding domain, a catalytic site and a dimerization domain. The nicking endonuclease is formed from combining one subunit having an inactivated catalytic site and a second subunit having an inactivated DNA binding domain. The nicking endonuclease may be converted into a restriction endonuclease by the addition of manganese cations in the digestion buffer.

    Method for cloning and expression of Acc65I restriction endonuclease and Acc65I methylase in E. coli
    3.
    发明申请
    Method for cloning and expression of Acc65I restriction endonuclease and Acc65I methylase in E. coli 有权
    在大肠杆菌中克隆并表达Acc65I限制性内切核酸酶和Acc65I甲基化酶的方法

    公开(公告)号:US20080009036A1

    公开(公告)日:2008-01-10

    申请号:US11818298

    申请日:2007-06-14

    CPC分类号: C12N9/22 C12N9/1007

    摘要: An isolated DNA is provided which encodes a protein that is capable of binding to 5′GGTACC-3′, the isolated DNA being capable of hybridizing to SEQ ID NO:3 under stringent hybridization conditions. The isolated DNA may be alternatively characterized as coding for a protein having an amino acid sequence comprising SEQ ID NO:5 or by an amino acid sequence with an expectation value of less than E=e−02 in a BLAST search using SEQ ID NO:5. Vectors containing the isolated DNA and host cells expressing the vectors as well as a method for making recombinant Acc65I having the above properties are also provided.

    摘要翻译: 提供分离的DNA,其编码能够结合5'GGTACC-3'的蛋白质,所述分离的DNA能够在严格的杂交条件下与SEQ ID NO:3杂交。 可以将分离的DNA替代地表征为编码具有包含SEQ ID NO:5的氨基酸序列的蛋白质,或编码具有小于E = e-O 2的期望值的氨基酸序列 使用SEQ ID NO:5进行BLAST检索。 还提供了含有表达载体的分离的DNA和宿主细胞的载体以及制备具有上述性质的重组Acc65I的方法。

    METHOD FOR CLONING AND EXPRESSION OF SBFI RESTRICTION ENDONUCLEASE AND SBFI METHYLASE IN E.COLI
    4.
    发明申请
    METHOD FOR CLONING AND EXPRESSION OF SBFI RESTRICTION ENDONUCLEASE AND SBFI METHYLASE IN E.COLI 有权
    在大肠杆菌中克隆和表达SBFI限制性内切酶和SBFI甲基化酶的方法

    公开(公告)号:US20050064433A1

    公开(公告)日:2005-03-24

    申请号:US10668047

    申请日:2003-09-22

    CPC分类号: C12N9/1007 C12N9/22

    摘要: The present invention relates to: recombinant DNA encoding the SbfI restriction endonuclease as well as the SbfI methylase, and expression of the SbfI restriction endonuclease and SbfI methylase in E. coli cells containing the recombinant DNA; and methods for cloning the SbfI restriction gene (sbfIR) from Streptomyces species Bf-61 into E. coli by PCR. The method relied on primers based on DNA sequences predicted from amino acid sequences of the purified SbfI restriction endonuclease.

    摘要翻译: 本发明涉及编码SbfI限制性内切核酸酶以及SbfI甲基化酶的重组DNA,以及含有重组DNA的大肠杆菌细胞中SbfI限制性内切核酸酶和SbfI甲基化酶的表达。 以及通过PCR将来自Streptomyces物种Bf-61的SbfI限制性基因(sbfIR)克隆到大肠杆菌中的方法。 该方法依赖于基于纯化的SbfI限制性内切核酸酶的氨基酸序列预测的DNA序列的引物。

    Method for cloning and expression of Acc65I restriction endonuclease and Acc65I methylase in E. Coli
    5.
    发明授权
    Method for cloning and expression of Acc65I restriction endonuclease and Acc65I methylase in E. Coli 有权
    在大肠杆菌中克隆并表达Acc65I限制性内切核酸酶和Acc65I甲基化酶的方法

    公开(公告)号:US07795408B2

    公开(公告)日:2010-09-14

    申请号:US11818298

    申请日:2007-06-14

    CPC分类号: C12N9/22 C12N9/1007

    摘要: An isolated DNA is provided which encodes a protein that is capable of binding to 5′GGTACC-3′, the isolated DNA being capable of hybridizing to SEQ ID NO:3 under stringent hybridization conditions. The isolated DNA may be alternatively characterized as coding for a protein having an amino acid sequence comprising SEQ ID NO:5 or by an amino acid sequence with an expectation value of less than E=e−02 in a BLAST search using SEQ ID NO:5. Vectors containing the isolated DNA and host cells expressing the vectors as well as a method for making recombinant Acc65I having the above properties are also provided.

    摘要翻译: 提供分离的DNA,其编码能够结合5'GGTACC-3'的蛋白质,所述分离的DNA能够在严格杂交条件下与SEQ ID NO:3杂交。 也可以将分离的DNA表征为在使用SEQ ID NO:5的BLAST搜索中编码具有包含SEQ ID NO:5的氨基酸序列或具有小于E = e-02的期望值的氨基酸序列的蛋白质。 5。 还提供了含有表达载体的分离的DNA和宿主细胞的载体以及制备具有上述性质的重组Acc65I的方法。