Specialized Metabolites from Ribosome Engineered Strains of Streptomyces clavuligerus

Metabolites

Pieter C. Dorrestein¹  Louis-Felix Nothias¹  ArshadAli Shaikh²  Kapil Tahlan²  Santosh K. Srivastava² 

[1] Collaborative Mass Spectrometry Innovation Center, Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, San Diego, La Jolla, CA 92093, USA;Department of Biology, Memorial University of Newfoundland, St. John’s, NL A1B 3X9, Canada;

关键词: Streptomyces;    specialized metabolites;    ribosome engineering;    ribosome recycling factor;    metabolomics;    global molecular networking;   

DOI  :  10.3390/metabo11040239

来源: DOAJ

【 摘 要 】

Bacterial specialized metabolites are of immense importance because of their medicinal, industrial, and agricultural applications. Streptomyces clavuligerus is a known producer of such compounds; however, much of its metabolic potential remains unknown, as many associated biosynthetic gene clusters are silent or expressed at low levels. The overexpression of ribosome recycling factor (frr) and ribosome engineering (induced rpsL mutations) in other Streptomyces spp. has been reported to increase the production of known specialized metabolites. Therefore, we used an overexpression strategy in combination with untargeted metabolomics, molecular networking, and in silico analysis to annotate 28 metabolites in the current study, which have not been reported previously in S. clavuligerus. Many of the newly described metabolites are commonly found in plants, further alluding to the ability of S. clavuligerus to produce such compounds under specific conditions. In addition, the manipulation of frr and rpsL led to different metabolite production profiles in most cases. Known and putative gene clusters associated with the production of the observed compounds are also discussed. This work suggests that the combination of traditional strain engineering and recently developed metabolomics technologies together can provide rapid and cost-effective strategies to further speed up the discovery of novel natural products.

【 授权许可】

Unknown