基因组挖掘和分子网络引导发现了从沙漠衍生的Embleya sp.中获得的embleyamycins A-F,calcimycin类型的聚乙烯. L7777 L7777 L7777 L7777 L7777 L7777 L7777
Xin Li1, Jixiang Xu1, Zhongke Jiang1
1Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, China.
Journal of natural products
|February 28, 2026
概括
研究人员发现了六种新的N-甲基甲基石化类型,即从罕见的Embleya actinomycete菌株中获得的embleyamycins A-F. 这些化合物表现出显著的抗菌和抗真菌活性,扩大了calcimycin家族.
科学领域:
- 微生物学 微生物学
- 自然产品 化学 化学
- 基因组学就是基因组学.
背景情况:
- 来自诸如青海-西藏高原等极端环境的行为菌群是新型生物活性化合物的来源.
- 恩布莱亚属是罕见的,其生物合成潜力还没有得到充分的探索.
- 卡尔西米辛类似物以其生物活性而闻名,但正在寻找新的衍生物.
研究的目的:
- 从来自沙漠的菌体中分离和描述新型抗生素.
- 为了研究一种罕见的Embleya物种的生物合成潜力.
- 为了发现新的N-甲基甲基石灰的类似物,并评估它们的抗菌活性.
主要方法:
- 从青海-西藏高原分离和种植L77菌株的行为菌种菌株.
- 基因组测序和生物信息分析以确定生物合成基因集群 (BGCs).
- 基于MS/MS的分子网络,光谱分析,以及用于结构阐明的量子化学计算.
主要成果:
- 确定了一种新型的Embleya物种L77,它具有calcimycin BGCs,但缺乏一个关键的N-甲基转移酶基因.
- 发现了6种新的N-甲基甲基胺类同类物,即emboleyamycins A-F (1-6).
- 恩布莱胺素A-F显示显著的抗菌活性对抗格拉姆阳性病原体 (MICs 0.25-8μg/mL) 和强大的抗真菌活性对抗Candida albicans (MICs ≤0.0625μg/mL).
结论:
- 这项研究扩大了卡尔西米辛类似物的化学多样性.
- 基因组挖掘和分子网络的综合方法对于发现新型自然产品是有效的.
- 恩布莱亚 sp. 在这里. L77是新型抗菌剂的有希望的来源.
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