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      Draft Genome Sequence of Planomonospora sphaerica JCM9374, a Rare Actinomycete

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          Abstract

          Planomonospora sphaerica is a rare actinomycete that is a potential antibiotic producer. Here, we report the draft genome sequence of P. sphaerica strain JCM9374. This is the first genome report of a bacterium belonging to the genus Planomonospora. The genome information of P. sphaerica will contribute to studies on the structure and function of antibiotics.

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          The khmer software package: enabling efficient nucleotide sequence analysis

          The khmer package is a freely available software library for working efficiently with fixed length DNA words, or k-mers. khmer provides implementations of a probabilistic k-mer counting data structure, a compressible De Bruijn graph representation, De Bruijn graph partitioning, and digital normalization. khmer is implemented in C++ and Python, and is freely available under the BSD license at  https://github.com/dib-lab/khmer/.
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            Cloning and analysis of the planosporicin lantibiotic biosynthetic gene cluster of Planomonospora alba.

            The increasing prevalence of antibiotic resistance in bacterial pathogens has renewed focus on natural products with antimicrobial properties. Lantibiotics are ribosomally synthesized peptide antibiotics that are posttranslationally modified to introduce (methyl)lanthionine bridges. Actinomycetes are renowned for their ability to produce a large variety of antibiotics, many with clinical applications, but are known to make only a few lantibiotics. One such compound is planosporicin produced by Planomonospora alba, which inhibits cell wall biosynthesis in Gram-positive pathogens. Planosporicin is a type AI lantibiotic structurally similar to those which bind lipid II, the immediate precursor for cell wall biosynthesis. The gene cluster responsible for planosporicin biosynthesis was identified by genome mining and subsequently isolated from a P. alba cosmid library. A minimal cluster of 15 genes sufficient for planosporicin production was defined by heterologous expression in Nonomuraea sp. strain ATCC 39727, while deletion of the gene encoding the precursor peptide from P. alba, which abolished planosporicin production, was also used to confirm the identity of the gene cluster. Deletion of genes encoding likely biosynthetic enzymes identified through bioinformatic analysis revealed that they, too, are essential for planosporicin production in the native host. Reverse transcription-PCR (RT-PCR) analysis indicated that the planosporicin gene cluster is transcribed in three operons. Expression of one of these, pspEF, which encodes an ABC transporter, in Streptomyces coelicolor A3(2) conferred some degree of planosporicin resistance on the heterologous host. The inability to delete these genes from P. alba suggests that they play an essential role in immunity in the natural producer.
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              Author and article information

              Journal
              Genome Announc
              Genome Announc
              ga
              ga
              GA
              Genome Announcements
              American Society for Microbiology (1752 N St., N.W., Washington, DC )
              2169-8287
              4 August 2016
              Jul-Aug 2016
              : 4
              : 4
              : e00779-16
              Affiliations
              [a ]Instrumental Research Support Office, Research Institute of Green Science and Technology, Shizuoka University, Suruga-ku, Shizuoka, Japan
              [b ]Department of Science, Graduate School of Integrated Science and Technology, Shizuoka University, Suruga-ku, Shizuoka, Japan
              [c ]Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya, Tochigi, Japan
              [d ]Department of Agriculture, Graduate School of Integrated Science and Technology, Shizuoka University, Suruga-ku, Shizuoka, Japan
              Author notes
              Address correspondence to Shinya Kodani, kodani.shinya@ 123456shizuoka.ac.jp .
              Article
              genomeA00779-16
              10.1128/genomeA.00779-16
              4974322
              27492001
              a8f98517-0575-4cb8-954b-462022d75529
              Copyright © 2016 Dohra et al.

              This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

              History
              : 9 June 2016
              : 10 June 2016
              Page count
              Figures: 0, Tables: 0, Equations: 0, References: 8, Pages: 2, Words: 1122
              Funding
              Funded by: Japan Society for the Promotion of Science (JSPS) http://dx.doi.org/10.13039/501100001691
              Award ID: 16K01913
              Award Recipient : Shinya Kodani
              Categories
              Prokaryotes
              Custom metadata
              July/August 2016

              Genetics
              Genetics

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