阿纳贝纳的All1750 PCC 7120编码了一个新的NAD+依赖氨基脱酶,具有广泛的基质范围
Krishna Kumar Rai1, Alka Raj2, Ruchi Rai2
1Department of Biotechnology, Amity School of Biological Sciences, Amity University, Mohali 140306, Punjab, India; Molecular Biology Section, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221005, India.
International journal of biological macromolecules
|December 8, 2024
概括
一种来自Anabaena PCC 7120的新型氨基脱酶 (AmDH),名为All1750,表现出对压力因素的耐受性和广泛的基质活性. 这种生物催化剂在工业应用中显示出具有成本效益的奇拉胺生物合成的前景.
科学领域:
- 生物化学和生物技术
- 酶工程是什么? 酶工程是什么?
- 微生物生物化学 微生物生物化学
背景情况:
- 原生氨基脱酶 (AmDHs) 往往受狭窄的基质特异性和低的过程性限制,需要工业用途的蛋白质工程.
- 来自Anabaena PCC 7120的WD40蛋白All1750代表了一种新的本地AMDH,具有更广泛应用的潜力.
研究的目的:
- 来自安纳贝纳PCC 7120的新型原生氨基脱酶 (AmDH) 的识别和特征.
- 评估已识别的AmDH (All1750) 对工业应用的潜力,重点关注基质特异性,稳定性和应力耐受性.
主要方法:
- 在大肠杆菌中all1750基因的异质表达.
- 通过基因表达,点检和反应性氧物种 (ROS) 生产来评估非生物应激耐受性 (干旱,,NaCl).
- 对基质结合的分子对接分析.
- 用各种基质进行酶活性测定 (乙芬,4-烯酸,4-烯酸).
- 确定最佳pH值,温度稳定性和运动参数 (Km).
主要成果:
- 在大肠杆菌中All1750的异质表达增强了对干旱,和NaCl的耐受性,由增加的基因表达,改善的点位检测结果和减少的ROS.
- 分子对接预测了All1750.0.的广泛基质结合活性.
- All1750与乙烯和相关化合物具有显著的酶活性,对具有成本效益的基质具有更高的亲和力.
- 在pH值8.0下观察到最佳的酶活性,在70°C下具有良好的热稳定性 (半衰期约3小时).
结论:
- 新型本地AmDH,来自Anabaena PCC 7120的All1750,是一种强大的生物催化剂,具有广泛的基质利用和增强的应激耐受性.
- All1750显示出作为一个具有成本效益的生物催化剂,在工业环境中具有显著的潜力.
- 这项研究扩大了生物技术应用的可用AMDH工具包.
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