马尔托斯通过合成酶生物系统在玻璃中生物制造的固体度转换
Guowei Li1,2, Xinlei Wei1, Ranran Wu1
1Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, 32 West 7th Avenue, Tianjin Airport Economic Area, Tianjin 300308, China.
Biodesign research
|October 18, 2023
概括
这项研究引入了一种新的酶系统,使马尔托斯在体外有效地转化为6-酸葡萄糖. 这一突破有助于从马尔中生产高产的生物电力和果糖1,6-二酸盐.
科学领域:
- 生物技术是生物技术.
- 合成生物学 合成生物学
- 酵素生物合成的生物合成方法
背景情况:
- 马尔托是一种α- (1,4) 相关的二糖化物,由于其酸化产品 (β-葡萄糖1-酸盐) 与常见的合成酶系统不相容,因此在体外应用有限.
- 现有的"体外合成酶生物系统"很难有效地利用麦芽糖进行生物合成.
研究的目的:
- 设计一种新的体外酶模块,以有效地将麦芽糖转化为6-酸葡萄糖.
- 用马尔托斯作为基质构建和评估用于生物发电和果糖1,6-二酸盐 (FDP) 生产的体外合成生物系统.
主要方法:
- 开发了一种使用马尔酸酸化酶 (MP),β-酸葡萄糖转化酶 (β-PGM) 和多酸葡萄糖激酶 (PPGK) 的酶模块,用于将马尔酸转化为6酸葡萄糖.
- 构建了用于生物电力生产的14酶生物系统和用于FDP合成的5酶生物系统.
- 采用料批次基板料策略,以提高FDP生产.
主要成果:
- 14酶生物电池显示了高法拉第效率 (96.4%) 和最大功率密度为0.6mW/cm^2.2.
- 这种产生5酶FDP的生物系统从50g/L麦芽糖中获得了187.0mMFDP的产量.
- 成功地将马尔托斯转化为两个分子的葡萄糖-6-酸盐.
结论:
- 开发的酶模块克服了用于体外生物合成的麦芽糖利用的先前限制.
- 本研究提出了有效的生物电力和从马尔托中增加价值的生物化学生产的新策略.
- 扩大了麦芽糖在工业生物技术和合成生物学中的应用范围.
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