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    • 4. 发明授权
    • DNA strands useful for the synthesis of xanthophylls and the process for
producing the xanthophylls
    • 可用于合成叶黄素的DNA链和产生叶黄素的方法
    • US6150130A
    • 2000-11-21
    • US335919
    • 1999-06-18
    • Norihiko MisawaKeiji KondoSusumu KajiwaraAkihiro Yokoyama
    • Norihiko MisawaKeiji KondoSusumu KajiwaraAkihiro Yokoyama
    • C12N9/02C12N15/53C12P23/00C12P7/26
    • C12N9/0093C12N9/0004C12P23/00
    • Disclosed are the following DNA strands relating to the synthesis of keto group-containing xanthophylls such as astaxanthin and the like, and the techniques relating to the production of xanthophylls by genetic engineering:A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for converting a methylene group at the 4-position of a .beta.-ionone ring into a keto group.A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for converting a methylene group at the 4-position of a 3-hydroxy-.beta.-ionone ring into a keto group.A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for adding a hydroxyl group to the 3-carbon of a 4-keto-.beta.-ionone ring.It is possible to produce a variety of xanthophylls such as canthaxanthin, astaxanthin and the like by introducing the DNA strands into an appropriate microorganism such as Escherichia coli and the like.
    • 公开了与合成含有酮基的叶黄素如虾青素等相关的以下DNA链,以及通过基因工程与叶黄素的生产有关的技术:具有编码具有酶的多肽的核苷酸序列的DNA链 将β-丁酮环的4-位上的亚甲基转化为酮基的活性。 具有编码具有将3-羟基-β-雄酮环的4-位的亚甲基转换为酮基的酶活性的多肽的核苷酸序列的DNA链。 一种DNA链,其具有编码具有用于向4-酮-β-雄酮环的3-碳中添加羟基的酶活性的多肽的核苷酸序列。 通过将DNA链引入适当的微生物如大肠杆菌等可以产生各种叶黄素如角黄素,虾青素等。
    • 6. 发明授权
    • DNA strands useful for the synthesis of xanthophylls and the process for
producing the xanthophylls
    • 可用于合成叶黄素的DNA链和产生叶黄素的方法
    • US5811273A
    • 1998-09-22
    • US663310
    • 1996-09-23
    • Norihiko MisawaKeiji KondoSusumu KajiwaraAkihiro Yokoyama
    • Norihiko MisawaKeiji KondoSusumu KajiwaraAkihiro Yokoyama
    • C12N9/02C12N15/53C12P23/00C12P7/26
    • C12N9/0093C12N9/0004C12P23/00
    • Disclosed are the following DNA strands relating to the synthesis of keto group-containing xanthophylls such as astaxanthin and the like, and the techniques relating to the production of xanthophylls by genetic engineering: A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for converting a methylene group at the 4-position of .beta.-ionone ring into a keto group. A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for converting a methylene group at the 4-position of a 3-hydroxy-.beta.-ionone ring into a keto group. A DNA strand having a nucleotide sequence which encodes a polypeptide having an enzyme activity for adding a hydroxyl group to the 3-carbon of a 4-keto-.beta.-ionone ring. It is possible to produce a variety of xanthophylls such as canthaxanthin, astaxanthin and the like by introducing the DNA strands into an appropriate microorganism such as Escherichia coli and the like.
    • PCT No.PCT / JP94 / 02220 Sec。 371日期1996年9月23日 102(e)日期1996年9月23日PCT 1994年12月26日PCT PCT。 公开号WO95 / 18220 日期1995年7月6日公开了以下关于合成含有酮基的叶黄素如虾青素等的DNA链,以及通过遗传工程生产叶黄素的技术:具有编码的核苷酸序列的DNA链 具有用于将β-丁酮环4位的亚甲基转化为酮基的酶活性的多肽。 具有编码具有将3-羟基-β-雄酮环的4-位的亚甲基转换为酮基的酶活性的多肽的核苷酸序列的DNA链。 一种DNA链,其具有编码具有用于向4-酮-β-雄酮环的3-碳中添加羟基的酶活性的多肽的核苷酸序列。 通过将DNA链引入适当的微生物如大肠杆菌等可以产生各种叶黄素如角黄素,虾青素等。