Feedback-resistant homoserine transsuccinylases
    1.
    发明授权
    Feedback-resistant homoserine transsuccinylases 失效
    反馈高丝氨酸异黄烷酰基酶

    公开(公告)号:US07371551B1

    公开(公告)日:2008-05-13

    申请号:US10530843

    申请日:2003-10-02

    摘要: The invention concerns a homoserine transsuccinylase having at least one mutation compared to a wild-type homoserine transsuccinylase and reduced sensitivity towards a L-methionine or SAM, compared to the wild-type enzyme. The latter comprises an amino acid sequence including a partial AspGlyXaaXaaXaaThrGlyAlaPro sequence between position 90 and position 115 and a partial TyrGlnXaaThrPro sequence between position 285 and position 310, position 1 of the amino acid sequence corresponding to the initial methionine. The invention is characterized in that the mutation is a substitution of the aspartate in the partial AspGlyXaaXaaXaaThrGlyAlaPro sequence, or a substitution of the tyrosine in the partial TyrGlnXaaThrPro sequence.

    摘要翻译: 与野生型酶相比,本发明涉及与野生型高丝氨酸跨苏糖酰基酶相比具有至少一个突变的高丝氨酸跨琥珀酰酶和对L-甲硫氨酸或SAM的敏感性降低。 后者包括氨基酸序列,其包含位于第90位和第115位之间的部分AspGlyXaaXaaXaaThrGlyAlaPro序列和位于第285位和310位之间的部分TyrGlnXaaThrPro序列,对应于初始甲硫氨酸的氨基酸序列的位置1。 本发明的特征在于突变是部分AspGlyXaaXaaXaaThrGlyAlaPro序列中天冬氨酸的取代,或部分TyrGlnXaaThrPro序列中的酪氨酸取代。

    Feedback-resistant homoserine transsuccinylases having a modified c terminus
    2.
    发明申请
    Feedback-resistant homoserine transsuccinylases having a modified c terminus 失效
    具有修饰的c末端的反馈抗高丝氨酸转氨基酰基酶

    公开(公告)号:US20060160173A1

    公开(公告)日:2006-07-20

    申请号:US10530844

    申请日:2003-10-16

    摘要: The invention relates to a homoserine transsuccinylase, which exhibits reduced sensitivity towards L-methionine or SAM in comparison with a homoserine transsuccinylase wild-type enzyme, whereby the latter comprises an amino acid sequence containing a TyrGlnXaaThrPro sub-sequence, the Thr of said sub-sequence lying between positions 285 and 310 of the amino acid sequence and position 1 being filled by the starter methionine. The inventive homoserine transsuccinylase is characterized in that in comparison with the wild-type enzyme at least 2 amino acids are modified, said modification taking place in the Thr of the sub-sequence or in the C-terminal.

    摘要翻译: 本发明涉及与高丝氨酸反式琥珀酰基酶野生型酶相比对L-甲硫氨酸或SAM具有降低的敏感性的高丝氨酸跨琥珀酰基酶,其中后者包含含有TyrGlnXaaThrPro子序列的氨基酸序列, 位于氨基酸序列的位置285和310之间的序列,位置1由起始蛋氨酸填充。 本发明的高丝氨酸跨琥珀酰基酶的特征在于,与野生型酶相比,至少2个氨基酸被修饰,所述修饰发生在子序列的Thr或C末端。

    Feedback-resistant homoserine transsuccinylases having a modified c-terminus
    3.
    发明授权
    Feedback-resistant homoserine transsuccinylases having a modified c-terminus 失效
    具有修饰的c-​​末端的反馈抗高丝氨酸跨琥珀酰基酶

    公开(公告)号:US07195897B2

    公开(公告)日:2007-03-27

    申请号:US10530844

    申请日:2003-10-16

    摘要: The invention relates to a homoserine transsuccinylase, which exhibits reduced sensitivity towards L-methionine or SAM in comparison with a homoserine transsuccinylase wild-type enzyme, whereby the latter comprises an amino acid sequence containing a TyrGlnXaaThrPro sub-sequence, the Thr of said sub-sequence lying between positions 285 and 310 of the amino acid sequence and position 1 being filled by the starter methionine. The inventive homoserine transsuccinylase is characterized in that in comparison with the wild-type enzyme at least 2 amino acids are modified, said modification taking place in the Thr of the sub-sequence or in the C-terminal.

    摘要翻译: 本发明涉及与高丝氨酸反式琥珀酰基酶野生型酶相比对L-甲硫氨酸或SAM具有降低的敏感性的高丝氨酸跨琥珀酰基酶,其中后者包含含有TyrGlnXaaThrPro子序列的氨基酸序列, 位于氨基酸序列的位置285和310之间的序列,位置1由起始蛋氨酸填充。 本发明的高丝氨酸跨琥珀酰基酶的特征在于,与野生型酶相比,至少2个氨基酸被修饰,所述修饰发生在子序列的Thr或C末端。