JP2020501607A - 生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)及びその構築方法 - Google Patents
生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)及びその構築方法 Download PDFInfo
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- JP2020501607A JP2020501607A JP2019553609A JP2019553609A JP2020501607A JP 2020501607 A JP2020501607 A JP 2020501607A JP 2019553609 A JP2019553609 A JP 2019553609A JP 2019553609 A JP2019553609 A JP 2019553609A JP 2020501607 A JP2020501607 A JP 2020501607A
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- gene
- candida utilis
- expression vector
- glucoamylase
- amylase
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Abstract
Description
制限エンドヌクレアーゼXbaIとSacIを用いてpScIKPのrDNA断片を切断した後、一本鎖特異的エンドヌクレアーゼ(S1nuclease、Takara)で切断して得られた突出末端を平滑化した後、DNAリガーゼによって、ベクターを環状化してrDNAを除去したベクターを得るステップ1)と、
PCR増幅により、カンジダ・ユティリス(Candida utilis)のグリセルアルデヒド−3−リン酸デヒドロゲナーゼプロモーター(CuGAP)DNA断片を得るステップ2)と、
制限エンドヌクレアーゼNheIとBamHIを用いて、CuGAP断片とステップ1)で得られたベクターとをそれぞれ二重消化した後、CuGAPをベクターに連結し、CuGAPでPGKプロモーターを代替したカンジダ・ユティリス(Candida utilis)発現ベクターpCuIKPを得るステップ3)と、を含む。
カンジダ・ユティリス(Candida utilis)のコドンバイアスに基づいて、α−アミラーゼ、グルコアミラーゼと酸性プロテアーゼのアミノ酸配列に応じて、それぞれのDNA配列をそれぞれ合成すると共に、配列の両端に適切な制限エンドヌクレアーゼ認識部位BamHIとSpeIを加え、制限エンドヌクレアーゼBamHIとSpeIを用いて、カンジダ・ユティリス(Candida utilis)多重遺伝子共発現ベクターと、サッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクターと、配列番号1で表されるα−アミラーゼ遺伝子と、配列番号2で表されるグルコアミラーゼ遺伝子と配列番号3で表される酸性プロテアーゼ遺伝子を二重消化し、必要な断片を精製して回収するステップS1と、
DNAリガーゼによって、α−アミラーゼ遺伝子とグルコアミラーゼ遺伝子をそれぞれpScIKPに連結し、酸性プロテアーゼ遺伝子をpCuIKPに連結し、3つの組換え単一遺伝子発現ベクターを形成するステップS2と、
制限エンドヌクレアーゼを用いて、ベクタープロモーターとターミネーター断片を含む完全なα−アミラーゼ遺伝子発現カセットとグルコアミラーゼ遺伝子発現カセットを、組換え単一遺伝子発現ベクターから切り出した後、ランダム発現カセットの形で酸性プロテアーゼ遺伝子を含有する単一遺伝子発現ベクターに一つずつ連結して、α−アミラーゼ、グルコアミラーゼと酸性プロテアーゼとの3遺伝子共発現ベクターを構築するステップS3と、
制限エンドヌクレアーゼSacIを用いて、構築した上記3遺伝子共発現ベクターを単一消化し、線状化した後、カンジダ・ユティリス(Candida utilis)に形質転換して、そのゲノムに組み込み、生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)を得るステップS4と、を含む。
制限エンドヌクレアーゼNheIとXbaIを用いて、α−アミラーゼとグルコアミラーゼ単一遺伝子発現ベクターを二重消化し、ベクタープロモーターとターミネーターを含むα−アミラーゼとグルコアミラーゼ遺伝子の完全な発現カセットを回収するステップS11と、
制限エンドヌクレアーゼNheIを用いて、酸性プロテアーゼ単一遺伝子発現ベクターを消化した後、NheIとXbaIのイソカウダーナー特徴を利用し、グルコアミラーゼ遺伝子発現カセットを酸性プロテアーゼ単一遺伝子発現ベクターに連結して、グルコアミラーゼと酸性プロテアーゼとの2遺伝子発現ベクターを構築するステップS12と、
制限エンドヌクレアーゼNheIを用いて、ステップS12で構築した2遺伝子発現ベクターを消化した後、α−アミラーゼ遺伝子発現カセットを2遺伝子発現ベクターに連結し、α−アミラーゼ、グルコアミラーゼと酸性プロテアーゼ3遺伝子共発現ベクターを構築するステップS13と、を含む。
Claims (7)
- 生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法であって、
前記カンジダ・ユティリス(Candida utilis)は、カンジダ・ユティリス(Candida utilis)多重遺伝子共発現ベクターを介して、α−アミラーゼ遺伝子と、グルコアミラーゼ遺伝子と、酸性プロテアーゼ遺伝子とをカンジダ・ユティリス(Candida utilis)ゲノムに組み込むことによって構築されることを特徴とする生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。 - 前記カンジダ・ユティリス(Candida utilis)多重遺伝子共発現ベクターは、サッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクターをベースとし、サッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクターのrDNA配列を除去し、カンジダ・ユティリス(Candida utilis)のグリセルアルデヒド−3−リン酸デヒドロゲナーゼのプロモーターでサッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクターのサッカロミセス・セレビシエ(Saccharomyces cerevisiae)ホスホグリセリン酸キナーゼのプロモーターを置換することによって得られることを特徴とする請求項1に記載の生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。
- 制限エンドヌクレアーゼを用いて、カンジダ・ユティリス(Candida utilis)多重遺伝子共発現ベクター、サッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクター、配列番号1で表されるα−アミラーゼ遺伝子、配列番号2で表されるグルコアミラーゼ遺伝子および配列番号3で表される酸性プロテアーゼ遺伝子を二重消化し、必要な断片を精製して回収するステップS1と、
DNAリガーゼによって、α−アミラーゼ遺伝子とグルコアミラーゼ遺伝子とをそれぞれサッカロミセス・セレビシエ(Saccharomyces cerevisiae)多重遺伝子共発現ベクターに連結し、酸性プロテアーゼ遺伝子をカンジダ・ユティリス(Candida utilis)多重遺伝子共発現ベクターに連結して、3つの組換え単一遺伝子発現ベクターを形成するステップS2と、
制限エンドヌクレアーゼを用いて、ベクタープロモーターとターミネーター断片を含む完全なα−アミラーゼ遺伝子発現カセットとグルコアミラーゼ遺伝子発現カセットを組換え単一遺伝子発現ベクターから切り出した後、直列接続された発現カセットの形で酸性プロテアーゼ遺伝子を含有する単一遺伝子発現ベクターに一つずつ連結して、α−アミラーゼと、グルコアミラーゼと、酸性プロテアーゼとの3遺伝子共発現ベクターを構築するステップS3と、
制限エンドヌクレアーゼを用いて、構築した前記3遺伝子共発現ベクターを単一消化し、線状化した後に、カンジダ・ユティリス(Candida utilis)に形質転換して、そのゲノムに組み込んで、生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)を得るステップS4と、を含むことを特徴とする請求項2に記載の生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。 - 前記ステップS3において、前記3遺伝子共発現ベクターを構築することは、
制限エンドヌクレアーゼを用いて、α−アミラーゼとグルコアミラーゼ組み換え単一遺伝子発現ベクターを二重消化し、ベクターのプロモーターとターミネーターを含む、α−アミラーゼ遺伝子とグルコアミラーゼ遺伝子の完全な発現カセットを回収するステップS11と、
制限エンドヌクレアーゼを用いて、酸性プロテアーゼ組み換え単一遺伝子発現ベクターを消化した後、グルコアミラーゼ遺伝子発現カセットを酸性プロテアーゼ単一遺伝子発現ベクターに連結して、グルコアミラーゼと酸性プロテアーゼとの2遺伝子発現ベクターを構築するステップS12と、
制限エンドヌクレアーゼを用いて、ステップS12で構築した2遺伝子発現ベクターを消化した後、α−アミラーゼ遺伝子発現カセットを2遺伝子発現ベクターに連結し、α−アミラーゼと、グルコアミラーゼと、酸性プロテアーゼとの3遺伝子共発現ベクターを構築するステップS13と、を含むことを特徴とする請求項3に記載の生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。 - 前記ステップS1における前記制限エンドヌクレアーゼはBamHIとSpeIであり、前記ステップS4における前記制限エンドヌクレアーゼはSacIであることを特徴とする請求項3に記載の生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。
- 前記ステップS11における前記制限エンドヌクレアーゼはNheIとXbaIであり、前記ステップS12における前記制限エンドヌクレアーゼはNheIであり、前記ステップS13における前記制限エンドヌクレアーゼはNheIであることを特徴とする請求項4に記載の生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)の構築方法。
- 請求項1〜6のいずれか一項に記載の方法により製造されることを特徴とする生ごみを分解利用することができる遺伝子組換えカンジダ・ユティリス(Candida utilis)。
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