来自Bacteroidota族的环境Pedobacter的一个基因可处理的分支代表了天然产品发现的热点
Yang Liu1, Luis Linares-Otoya1,2, Christian Kersten3
1Institute for Insect Biotechnology with Focus on Natural Product Research, Justus- Liebig-University Giessen, Ohlebergsweg 12, 35392, Giessen, Germany.
Scientific reports
|June 20, 2025
概括
研究人员探索了生产抗生素的细菌Pedobacter,发现了12种新型的脂,称为crypopeptins. 这项工作释放了未被充分探索的细菌的潜力,以发现新的天然产品.
科学领域:
- 微生物学 微生物学
- 自然产品化学 自然产品化学
- 基因组学就是基因组学.
背景情况:
- 抗微生物耐药性需要探索天然产品的新型微生物来源.
- 杆菌属Pedobacter,在Bacteroidota中,以生产抗生素而闻名,但对于二次代谢产物的研究不足.
- 在Pedobacter中存在许多编码二次代谢物 (SM) 的生物合成基因集群 (BGCs).
研究的目的:
- 通过计算和实验来描述Pedobacter属的生物合成潜力.
- 识别和分离来自Pedobacter物种的新型二次代谢物.
- 了解Pedobacter中二次代谢物生物合成的机制.
主要方法:
- 对Pedobacter属的基因组学分析.
- 开发新的基因工具用于Pedobacter.
- 代谢学,合成化学和分析化学的整合.
- 脂的隔离和结构特征.
主要成果:
- 鉴定了一种与 lipopeptide 相关的 BGC 富含未知产品的 Pedobacter 类.
- 从Pedobacter cryoconitis中分离和结构性表征了十二种线性脂 (cryopeptins A-N).
- 证实,类是由单个非核糖体合成酶 (NRPS) 基因生物合成的.
- 已证明组合性脂肪酸结合和代性氨基酸组合驱动了烯的多样性.
结论:
- 皮多巴克特表现出显著的生物合成多功能性,提供了丰富的神秘天然产品来源.
- 开发的遗传工具使得能够系统地探索Pedobacter的天然产品目录.
- 这项研究为从未探索过的细菌种群中发现新生物活性化合物的研究提供了框架.
相关概念视频
01:26Bacterial Phylum Bacteroidota
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The phylum Bacteroidota includes over 700 species classified into four primary orders: Bacteroidales, Cytophagales, Flavobacteriales, and Sphingobacteriales. These gram-negative, non-sporulating rods exhibit saccharolytic capabilities and can be aerobic or fermentative, encompassing obligate aerobes, facultative aerobes, and obligate anaerobes. Many species display gliding motility, though some are nonmotile or use flagella. The genus Bacteroides is well-studied due to its significant role in...
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01:26Bacterial Phylum Proteobacteria
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Proteobacteria, one of the largest and most diverse bacterial phyla, encompasses a wide range of Gram-negative bacteria distinguished by their outer membrane composed of lipopolysaccharides. These microorganisms exhibit various metabolic capabilities, including phototrophy, chemolithotrophy, and heterotrophy, and thrive in diverse environments from soil to aquatic systems and host-associated niches. The phylum is divided into six classes: Alphaproteobacteria, Betaproteobacteria,...
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01:30Bacterial Phylum Actinobacteria
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Coryneform bacteria are gram-positive, aerobic, nonmotile rods that exhibit irregular, club-shaped, or V-shaped arrangements. Their V-shape results from snapping division, where the inner cell wall layer forms the cross-wall, while the outer layer remains intact until it ruptures on one side, causing the daughter cells to bend away.The primary genera are Corynebacterium and Arthrobacter. Corynebacterium includes diverse species, ranging from saprophytes to pathogens like Corynebacterium...
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01:24Bacterial Phylum Tenericutes
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The phylum Tenericutes, which includes the single class Mollicutes, comprises bacteria that lack cell walls. The term "Mollicutes" derives from the Latin word mollis, meaning "soft." These organisms are among the smallest known and are commonly referred to as mycoplasmas due to the prominence of the genus Mycoplasma, which includes well-known human pathogens. Despite their inability to stain gram-positively (a result of their lack of cell walls), mycoplasmas are phylogenetically related to the...
102
01:27Bacterial Phylum Firmicutes
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Firmicutes is a diverse phylum of Gram-positive bacteria characterized by a low GC content in their genomes. This phylum includes organisms with monoderm or diderm cell envelopes, highlighting a complex evolutionary history. Firmicutes comprises several major orders, including Lactobacillales, Clostridiales, and Bacillales, which exhibit remarkable diversity in their morphology, metabolism, and ecological roles.The order Lactobacillales includes lactic acid bacteria, which are fermentative...
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01:26Bacterial Phylum Planctomycetes
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Planctomycetes are a group of morphologically distinct bacteria predominantly classified into two orders: Planctomycetales and Brocadiales. These gram-negative bacteria exhibit unique features, including division by budding and the presence of stalks or appendages. Their cells are often found in rosette arrangements, and they are notable for possessing an S-layer in their cell envelope, which is relatively uncommon among bacteria. Additionally, Planctomycetes frequently exhibit intracellular...
95