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    • 7. 发明公开
    • 향상된 퓨트레신 생산능을 가지는 변이된 오르니틴 디카복실레이즈 단백질 및 이의 용도
    • 改进的异丙肾上腺素蛋白与改进的生产能力及其用途
    • KR1020150009890A
    • 2015-01-27
    • KR1020130084409
    • 2013-07-17
    • 씨제이제일제당 (주)한국과학기술원
    • 최향정희경김학성경현호최정민이중재서효덕
    • C12N9/88C12N15/60C12P13/04
    • C12P13/001C12N9/88C12Y401/01017
    • The present invention relates to novel mutated ornithine decarboxylase protein having enhanced capability of producing purtrescine, and to use thereof. According to the present invention, the mutated ornithine decarboxylase protein has putrescine conversion activity 21 times greater than that of natural type protein. When introduced into a prior putrescine-producing strain, the mutated ornithine decarboxylase protein significantly increases putrescine producing activity of the strain. Therefore, the mutated ornithine decarboxylase protein is an alternative for a protein used in the prior chemical synthesis pathway, and is expected to be used for more efficient mass-production of putrescine. In the mutated ornithine decarboxylase protein, a 163rd isoleucine amino acid residue and a 165th glutamic acid from an N-terminal of ornithine decarboxylase (ODC) having an amino acid sequence represented by SEQ ID: 1 are mutated.
    • 本发明涉及具有增强的产生purtresine的能力的新的突变鸟氨酸脱羧酶蛋白及其应用。 根据本发明,突变的鸟氨酸脱羧酶蛋白质具有比天然型蛋白质高21倍的腐胺转化活性。 当引入现有的腐胺生产菌株时,突变的鸟氨酸脱羧酶蛋白显着增加菌株的腐胺产生活性。 因此,突变的鸟氨酸脱羧酶蛋白是用于现有化学合成途径中的蛋白质的替代物,并且预期用于更有效地批量生产腐胺。 在突变的鸟氨酸脱羧酶蛋白中,具有SEQ ID:1所示氨基酸序列的鸟氨酸脱羧酶(ODC)N末端的第163位异亮氨酸氨基酸残基和第165位谷氨酸被突变。