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Streptomyces pristinaespiralis

ABSTRACT: Streptomyces pristinaespiralis overview

PROVIDER: PRJNA36845 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR004368.fastq.gz	Fastqsanger.gz
	SRR017401.fastq.gz	Fastqsanger.gz

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Streptomyces pristinaespiralis strain:PR11

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Streptomyces pristinaespiralis strain:SAI-175

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Streptomyces pristinaespiralis strain:SAI-205

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Streptomyces pristinaespiralis strain:HCCB 10218

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Characterization of the 'pristinamycin supercluster' of Streptomyces pristinaespiralis.

Project description:Pristinamycin, produced by Streptomyces pristinaespiralis Pr11, is a streptogramin antibiotic consisting of two chemically unrelated compounds, pristinamycin I and pristinamycin II. The semi-synthetic derivatives of these compounds are used in human medicine as therapeutic agents against methicillin-resistant Staphylococcus aureus strains. Only the partial sequence of the pristinamycin biosynthetic gene cluster has been previously reported. To complete the sequence, overlapping cosmids were isolated from a S. pristinaespiralis Pr11 gene library and sequenced. The boundaries of the cluster were deduced, limiting the cluster size to approximately 210 kb. In the central region of the cluster, previously unknown pristinamycin biosynthetic genes were identified. Combining the current and previously identified sequence information, we propose that all essential pristinamycin biosynthetic genes are included in the 210 kb region. A pristinamycin biosynthetic pathway was established. Furthermore, the pristinamycin gene cluster was found to be interspersed by a cryptic secondary metabolite cluster, which probably codes for a glycosylated aromatic polyketide. Gene inactivation experiments revealed that this cluster has no influence on pristinamycin production. Overall, this work provides new insights into pristinamycin biosynthesis and the unique genetic organization of the pristinamycin gene region, which is the largest antibiotic 'supercluster' known so far.

| S-EPMC3818860 | biostudies-literature

The genome of Streptomyces rimosus shows a novel structure compared to other Streptomyces

Project description:This study compared the genome of Streptomyces rimosus rimosus against that of Streptomyces coelicolor. It also compared 4 strains with changes in oxytetracycline production and derived from G7, the type strain, against G7. Keywords: Comparative genomic hybridization

2008-01-11 | GSE10126 | GEO

A Complex Signaling Cascade Governs Pristinamycin Biosynthesis in Streptomyces pristinaespiralis.

Project description:Pristinamycin production in Streptomyces pristinaespiralis Pr11 is tightly regulated by an interplay between different repressors and activators. A γ-butyrolactone receptor gene (spbR), two TetR repressor genes (papR3 and papR5), three SARP (Streptomyces antibiotic regulatory protein) genes (papR1, papR2, and papR4), and a response regulator gene (papR6) are carried on the large 210-kb pristinamycin biosynthetic gene region of Streptomyces pristinaespiralis Pr11. A detailed investigation of all pristinamycin regulators revealed insight into a complex signaling cascade, which is responsible for the fine-tuned regulation of pristinamycin production in S. pristinaespiralis.

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Genome-wide binding site profiling of NdgR in Streptomyces coelicolor

Project description:We identified genome-wide binding regions of NdgR in Streptomyces coelicolor using chromatin immunoprecipitation sequencing (ChIP-seq). We constructed 6×myc-tagged NdgR strain using homologous recombination with myc-tagging vector. Analysis of the sequencing data aligned to Streptomyces coelicolor genome database (NC_003888).

2014-12-29 | GSE59010 | GEO

Investigation of the Autoregulator-Receptor System in the Pristinamycin Producer Streptomyces pristinaespiralis.

Project description:Pristinamycin biosynthesis in Streptomyces pristinaespiralis is governed by a complex hierarchical signaling cascade involving seven different transcriptional regulators (SpbR, PapR1, PapR2, PapR3, PapR4, PapR5, and PapR6). The signaling cascade is triggered by ?-butyrolactone (GBL)-like effector molecules, whereby the chemical structure of the effector, as well as its biosynthetic origin is unknown so far. Three of the pristinamycin transcriptional regulators (SpbR, PapR3, and PapR5) belong to the type of ?-butyrolactone receptor (GBLR). GBLRs are known to either act as "real" GBLRs, which bind GBLs as ligands or as "pseudo" GBLRs binding antibiotics or intermediates thereof as effector molecules. In this study, we performed electromobility shift assays (EMSAs) with SpbR, PapR3, and PapR5, respectively, in the presence of potential ligand samples. Thereby we could show that all three GBLRs bind synthetic 1,4-butyrolactone but not pristinamycin as ligand, suggesting that SpbR, PapR3, and PapR5 act as "real" GBLRs in S. pristinaespiralis. Furthermore, we identified a cytochrome P450 monooxygenase encoding gene snbU as potential biosynthesis gene for the GBLR-interacting ligand. Inactivation of snbU resulted in an increased pristinamycin production, which indicated that SnbU has a regulatory influence on pristinamycin production. EMSAs with culture extract samples from the snbU mutant did not influence the target binding ability of SpbR, PapR3, and PapR5 anymore, in contrast to culture supernatant samples from the S. pristinaespiralis wild-type or the pristinamycin deficient mutant papR2::apra, which demonstrates that SnbU is involved in the synthesis of the GBLR-interacting ligand.

| S-EPMC7554373 | biostudies-literature

Ribosome profiling of Streptomyces griseus NBRC13350 and Streptomyces venezuelae ATCC15439

Project description:We performed ribosome profiling which is the deep-sequencing of mRNA fragments protected by translating ribosome for two Streptomyces species through different growth phases to provide the translatome data

2020-03-03 | GSE138278 | GEO

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