scholarly journals Direct cloning and heterologous expression of the salinomycin biosynthetic gene cluster from Streptomyces albus DSM41398 in Streptomyces coelicolor A3(2)

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Jia Yin ◽  
Michael Hoffmann ◽  
Xiaoying Bian ◽  
Qiang Tu ◽  
Fu Yan ◽  
...  
ChemBioChem ◽  
2012 ◽  
Vol 13 (13) ◽  
pp. 1946-1952 ◽  
Author(s):  
Xiaoying Bian ◽  
Fan Huang ◽  
Francis A. Stewart ◽  
Liqiu Xia ◽  
Youming Zhang ◽  
...  

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 510
Author(s):  
Nils Böhringer ◽  
Maria A. Patras ◽  
Till F. Schäberle

Pseudouridimycin (PUM) was recently discovered from Streptomyces sp. DSM26212 as a novel bacterial nucleoside analog that competes with UTP for access to the RNA polymerase (RNAP) active site, thereby inhibiting bacterial RNAP by blocking transcription. This represents a novel antibacterial mode of action and it is known that PUM inhibits bacterial RNAP in vitro, inhibits bacterial growth in vitro, and was active in vivo in a mouse infection model of Streptococcus pyogenes peritonitis. The biosynthetic gene cluster (BGC) was previously identified and characterized by knockout experiments. However, the minimal set of genes necessary for PUM production was not proposed. To identify the minimal BGC and to create a plug-and-play production platform for PUM and its biosynthetic precursors, several versions of a redesigned PUM BGC were generated and expressed in the heterologous host Streptomyces coelicolor M1146 under control of strong promotors. Heterologous expression allowed identification of the putative serine/threonine kinase PumF as an enzyme essential for heterologous PUM production and thus corroboration of the PUM minimal BGC.


Microbiology ◽  
2003 ◽  
Vol 149 (7) ◽  
pp. 1633-1645 ◽  
Author(s):  
Koji Ichinose ◽  
Makoto Ozawa ◽  
Keiko Itou ◽  
Kanako Kunieda ◽  
Yutaka Ebizuka

Medermycin is a Streptomyces aromatic C-glycoside antibiotic classified in the benzoisochromanequinones (BIQs), which presents several interesting biosynthetic problems concerning polyketide synthase (PKS), post-PKS tailoring and deoxysugar pathways. The biosynthetic gene cluster for medermycin (the med cluster) was cloned from Streptomyces sp. AM-7161. Completeness of the clone was proved by the heterologous expression of a cosmid carrying the entire med cluster in Streptomyces coelicolor CH999 to produce medermycin. The DNA sequence of the cosmid (36 202 bp) revealed 34 complete ORFs, with an incomplete ORF at either end. Functional assignment of the deduced products was made for PKS and biosynthetically related enzymes, tailoring steps including strereochemical control, oxidation, angolosamine pathway, C-glycosylation, and regulation. The med cluster was estimated to be about 30 kb long, covering 29 ORFs. An unusual characteristic of the cluster is the disconnected organization of the minimal PKS genes: med-ORF23 encoding the acyl carrier protein is 20 kb apart from med-ORF1 and med-ORF2 for the two ketosynthase components. Secondly, the six genes (med-ORF14, 15, 16, 17, 18 and 20) for the biosynthesis of the deoxysugar, angolosamine, are all contiguous. Finally, the finding of a glycosyltransferase gene, med-ORF8, suggests a possible involvement of conventional C-glycosylation in medermycin biosynthesis. Comparison among the three complete BIQ gene clusters – med and those for actinorhodin (act) and granaticin (gra) – revealed some common genes whose deduced functions are unavailable from database searches (the ‘unknowns’). An example is med-ORF5, a homologue of actVI-ORF3 and gra-ORF18, which was highlighted by a recent proteomic analysis of S. coelicolor A3(2).


2017 ◽  
Vol 27 (3) ◽  
pp. 190-198 ◽  
Author(s):  
Chen Zhao ◽  
Ying Huang ◽  
Chao Guo ◽  
Bolei Yang ◽  
Yan Zhang ◽  
...  

Spinosyns are a group of macrolide insecticides produced by <i>Saccharopolyspora spinosa</i>. Although <i>S. spinosa</i> can be used for industrial-scale production of spinosyns, this might suffer from several limitations, mainly related to its long growth cycle, low fermentation biomass, and inefficient utilization of starch. It is crucial to generate a robust strain for further spinosyn production and the development of spinosyn derivatives. A BAC vector, containing the whole biosynthetic gene cluster for spinosyn (74 kb) and the elements required for conjugal transfer and site-specific integration, was introduced into different <i>Streptomyces</i> hosts in order to obtain heterologous spinosyn-producing strains. The exconjugants of different <i>Streptomyces</i> strains did not show spinosyn production unless the rhamnose biosynthesis genes from <i>S. spinosa</i> genomic DNA were present and expressed under the control of a strong constitutive <i>ermE</i>*<i>p</i> promoter. Using this heterologous expression system resulted in yields of 1 μg/mL and 1.5 μg/mL spinosyns in <i>Streptomyces coelicolor</i> and <i>Streptomyces lividans</i>, respectively. This report demonstrates spinosyn production in 2 <i>Streptomyces</i> strains and stresses the essential role of rhamnose in this process. This work also provides a potential alternative route for producing spinosyn analogs by means of genetic manipulation in the heterologous hosts.


2021 ◽  
Vol 85 (3) ◽  
pp. 714-721
Author(s):  
Risa Takao ◽  
Katsuyuki Sakai ◽  
Hiroyuki Koshino ◽  
Hiroyuki Osada ◽  
Shunji Takahashi

ABSTRACT Recent advances in genome sequencing have revealed a variety of secondary metabolite biosynthetic gene clusters in actinomycetes. Understanding the biosynthetic mechanism controlling secondary metabolite production is important for utilizing these gene clusters. In this study, we focused on the kinanthraquinone biosynthetic gene cluster, which has not been identified yet in Streptomyces sp. SN-593. Based on chemical structure, 5 type II polyketide synthase gene clusters were listed from the genome sequence of Streptomyces sp. SN-593. Among them, a candidate gene cluster was selected by comparing the gene organization with grincamycin, which is synthesized through an intermediate similar to kinanthraquinone. We initially utilized a BAC library for subcloning the kiq gene cluster, performed heterologous expression in Streptomyces lividans TK23, and identified the production of kinanthraquinone and kinanthraquinone B. We also found that heterologous expression of kiqA, which belongs to the DNA-binding response regulator OmpR family, dramatically enhanced the production of kinanthraquinones.


Gene ◽  
1990 ◽  
Vol 90 (1) ◽  
pp. 31-41 ◽  
Author(s):  
Danila Limauro ◽  
Alessandra Avitabile ◽  
Carmela Cappellano ◽  
Anna Maria Puglia ◽  
Carmelo B. Bruni

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