The Isolation of Pyrroloformamide Congeners and Characterization of Their Biosynthetic Gene Cluster
作者:Wenqing Zhou、Haoyu Liang、Xiangjing Qin、Danfeng Cao、Xiangcheng Zhu、Jianhua Ju、Ben Shen、Yanwen Duan、Yong Huang
DOI:10.1021/acs.jnatprod.9b00321
日期:2020.2.28
antibacterial activity against a variety of bacterial pathogens, as well as potent cytotoxicity against human cancer cells. In the current study, two new dithiolopyrrolones, pyrroloformamide C (3) and pyrroloformamide D (4), were isolated from Streptomyces sp. CB02980, together with the known pyrroloformamides 1 and 2. The biosynthetic gene cluster for pyrroloformamides was identified from Streptomyces sp. CB02980
二硫代吡咯烷酮是微生物天然产物,其包含嵌入独特的双环结构中的二硫键或硫代磺酸盐桥。通过干扰活细胞中的锌离子稳态,它们表现出对多种细菌病原体的强大抗菌活性,以及对人癌细胞的强细胞毒性。在当前的研究中,从链霉菌属中分离出两个新的二硫代吡咯烷酮,吡咯甲酰胺C(3)和吡咯甲酰胺D(4)。CB02980,以及已知的吡咯甲酰胺1和2。吡咯甲酰胺的生物合成基因簇是从链霉菌属物种中鉴定的。CB02980,与二硫吡咯烷酮,包括holomycin和thiolutin,具有高度的序列相似性。编码非核糖体肽合成酶(NRPS)的pyfE的基因替换取消了1-4的产生。