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来自深海沉积物元基因组的假定III型聚基酸合成酶的功能分析

Nishanthika Thenmozhi Kulasekaran¹, Sai Hariharan Sankara Subramanian¹, Mary Leema Thilakam¹

¹Marine Biotechnology Division, National Institute of Ocean Technology, Pallikaranai, Chennai-600100, Tamilnadu, India.

Journal of bioscience and bioengineering

|February 2, 2024

概括

研究人员在深海的元基因组中发现了一种新型的III型聚基酸合成酶 (PKS). 这种酶,S9PKS,产生,为生物技术应用提供了潜力.

科学领域:

生物化学生物化学
分子生物学分子生物学
海洋微生物学海洋微生物学

背景情况:

第三种类型的多基合成酶 (PKSs) 是重要的酶,可以产生像皮龙等有价值的化合物.
探索极端环境,如深海沉积物,可以产生新的酶.

研究的目的:

来自深海元基因组的新型III型PKS酶的识别和功能性特征.
探索新发现的PKS酶的生物技术潜力.

主要方法:

查孟加拉湾深海沉积物的基因组,以检测III型PKS基因.
基因合成,克隆成表达载体 (pET28a,pColdI),以及在大肠杆菌中的表达.
使用Ni-NTA阿加罗斯净化蛋白质和使用乙烯基-CoA基质的功能测试.
使用高性能液态染色学 (HPLC) 分析产品.

主要成果:

确定了一种全长的III型PKS基因 (S9PKS),其低序列与已知的酶相同.
合成和优化酶 (OptiPKS) 已成功表达,溶解,重新折叠和净化.
从C4到C10的乙烯基-CoA基板中,OptiPKS生产了三甲基和四甲基.

结论:

一种新型的功能性III型PKS从深海的元基因组中得到了特征.
该酶表现出产生有价值的pyrone化合物的潜力.
这项研究强调了环境元基因组学在发现新型酶方面的有用性.

关键词:

标注注释标注注释深海沉积物的沉积物甲基基因组是指甲基因组中的一部分.皮洛尼斯 (Pyrones) 是一种有氧化物.第三种类型的多基化合成酶.

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