JP2018520674A - 改善された活性を持つ新規のp450−bm3バリアント - Google Patents
改善された活性を持つ新規のp450−bm3バリアント Download PDFInfo
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- JP2018520674A JP2018520674A JP2017567368A JP2017567368A JP2018520674A JP 2018520674 A JP2018520674 A JP 2018520674A JP 2017567368 A JP2017567368 A JP 2017567368A JP 2017567368 A JP2017567368 A JP 2017567368A JP 2018520674 A JP2018520674 A JP 2018520674A
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Abstract
Description
本発明は、改善された活性を持つ改善されたP450−BM3バリアントを提供する。一部の実施形態では、P450−BM3バリアントは、広範囲の基質にわたって改善された活性を呈する。
配列表、表またはコンピュータープログラムの参照
略語および定義:
改変P450−BM3ポリペプチド:
改善された活性を持つバリアント:
改変ポリペプチドをコードするポリヌクレオチド、発現ベクターおよび宿主細胞:
実験
P450−BM3進化および発現ベクターの構築
P450−BM3バリアントのライブラリーは、配列番号2、4、6、8、10、12、14および16の8つの親配列に基づき、当技術分野において公知の標準的な方法を使用して生成した。これらの親株は、有益な多様性を組み換えることによってコンビナトリアルライブラリーを作成するために使用した。これらの親骨格株(parental backbone strain)およびそれらの配列IDを以下の表1に収載し、最初にポリヌクレオチド配列を、続いてポリペプチド配列を収載する。
(実施例2)
アッセイシステムおよび結果
I.酵素活性についての活性ベースのハイスループットスクリーニング(HTP):
II.ゼネラリスト特性の検証:
III.HPLC、LCMSおよびUPLC−MS分析:
IV.結果:
Claims (13)
- 配列番号2、4、6、8、10、12、14または16に記載されている配列を含むポリペプチド配列と少なくとも90%の配列同一性を有する、組換えシトクロムP450−BM3バリアント。
- 少なくとも3つの有機基質を酸化する、請求項1に記載の組換えシトクロムP450−BM3バリアント。
- 前記有機基質が、ロラタジン、イマチニブ、ゲフィチニブおよびジクロフェナクから選択される、請求項2に記載の組換えシトクロムP450−BM3バリアント。
- 請求項1に記載の組換えシトクロムP450−BM3バリアントをコードする、組換えポリヌクレオチド配列。
- 配列番号1、3、5、7、9、11、13または15を含む、請求項4に記載の組換えポリヌクレオチド配列。
- 請求項4または5に記載のポリヌクレオチド配列を含む、発現ベクター。
- 前記ポリヌクレオチド配列が、好適な宿主細胞において、該ポリヌクレオチド配列の発現に好適な調節配列と作動可能に連結した、請求項6に記載のベクター。
- 前記宿主細胞が、原核細胞または真核細胞である、請求項6および/または7に記載のベクター。
- 前記宿主細胞が、原核細胞である、請求項8に記載のベクター。
- 前記宿主細胞が、E.coliである、請求項8および/または9に記載のベクター。
- 請求項6および/または7に記載のベクターを含む、宿主細胞。
- 少なくとも1つの組換えシトクロムP450−BM3バリアントを生成するための方法であって、請求項11に記載の宿主細胞を、請求項1から3のいずれかに記載の組換えシトクロムP450−BM3バリアントが該宿主細胞によって生成されるような条件下で、培養するステップを含む、方法。
- 前記少なくとも1つの組換えシトクロムP450バリアントを回収するステップをさらに含む、請求項12に記載の方法。
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US201562189281P | 2015-07-07 | 2015-07-07 | |
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PCT/US2016/035399 WO2017007547A1 (en) | 2015-07-07 | 2016-06-02 | Novel p450-bm3 variants with improved activity |
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