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Kasuga K, Sasaki A, Matsuo T, Yamamoto C, Minato Y, Kuwahara N, Fujii C, Kobayashi M, Agematu H, Tamura T, Komatsu M, Ishikawa J, Ikeda H, Kojima I. Heterologous production of kasugamycin, an aminoglycoside antibiotic from Streptomyces kasugaensis, in Streptomyces lividans and Rhodococcus erythropolis L-88 by constitutive expression of the biosynthetic gene cluster. Appl Microbiol Biotechnol 2017; 101:4259-4268. [PMID: 28243709 DOI: 10.1007/s00253-017-8189-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 02/05/2017] [Accepted: 02/12/2017] [Indexed: 11/28/2022]
Abstract
Kasugamycin (KSM), an aminoglycoside antibiotic isolated from Streptomyces kasugaensis cultures, has been used against rice blast disease for more than 50 years. We cloned the KSM biosynthetic gene (KBG) cluster from S. kasugaensis MB273-C4 and constructed three KBG cassettes (i.e., cassettes I-III) to enable heterologous production of KSM in many actinomycetes by constitutive expression of KBGs. Cassette I comprised all putative transcriptional units in the cluster, but it was placed under the control of the P neo promoter from Tn5. It was not maintained stably in Streptomyces lividans and did not transform Rhodococcus erythropolis. Cassette II retained the original arrangement of KBGs, except that the promoter of kasT, the specific activator gene for KBG, was replaced with P rpsJ , the constitutive promoter of rpsJ from Streptomyces avermitilis. To enhance the intracellular concentration of myo-inositol, an expression cassette of ino1 encoding the inositol-1-phosphate synthase from S. avermitilis was inserted into cassette II to generate cassette III. These two cassettes showed stable maintenance in S. lividans and R. erythropolis to produce KSM. Particularly, the transformants of S. lividans induced KSM production up to the same levels as those produced by S. kasugaensis. Furthermore, cassette III induced more KSM accumulation than cassette II in R. erythropolis, suggesting an exogenous supply of myo-inositol by the ino1 expression in the host. Cassettes II and III appear to be useful for heterologous KSM production in actinomycetes. Rhodococcus exhibiting a spherical form in liquid cultivation is also a promising heterologous host for antibiotic fermentation.
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Affiliation(s)
- Kano Kasuga
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan.
| | - Akira Sasaki
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Takashi Matsuo
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Chika Yamamoto
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Yuiko Minato
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Naoya Kuwahara
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Chikako Fujii
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Masayuki Kobayashi
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
| | - Hitosi Agematu
- Department of Applied Chemistry, National Institute of Technology, Akita College, Akita, 011-8511, Japan
| | - Tomohiro Tamura
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Sapporo, 062-8517, Japan
| | - Mamoru Komatsu
- Laboratory of Microbial Engineering, Kitasato Institute for Life Sciences, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
| | - Jun Ishikawa
- Department of Bioactive Molecules, National Institute of Infectious Diseases, Tokyo, 162-8640, Japan
| | - Haruo Ikeda
- Laboratory of Microbial Engineering, Kitasato Institute for Life Sciences, Kitasato University, Sagamihara, Kanagawa, 252-0373, Japan
| | - Ikuo Kojima
- Department of Biotechnology, Akita Prefectural University, 241-438 Kaidobata-Nishi, Akita City, Nakano Shimoshinjo, 010-0195, Japan
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TOMOTSUNE K, KASUGA K, TSUCHIDA M, SHIMURA Y, KOBAYASHI M, AGEMATSU H, IKEDA H, ISHIKAWA J, KOJIMA I. Cloning and Sequence Analysis of the Cellulase Genes Isolated from Two Cellulolytic Streptomycetes and Their Heterologous Expression in Streptomyces lividans . ACTA ACUST UNITED AC 2014. [DOI: 10.5188/ijsmer.20.213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | - Kano KASUGA
- Department of Biotechnology, Akita Prefectural University
| | - Miho TSUCHIDA
- Department of Biotechnology, Akita Prefectural University
| | | | | | - Hitoshi AGEMATSU
- Department of Applied Chemistry, Akita National College of Technology
| | - Haruo IKEDA
- Kitasato Institute for Life Sciences, Kitasato University
| | - Jun ISHIKAWA
- Department of Bioactive Molecules, National Institute of Infectious Diseases
| | - Ikuo KOJIMA
- Department of Biotechnology, Akita Prefectural University
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Kojima I, Kasuga K, Kobayashi M, Fukasawa A, Mizuno S, Arisawa A, Akagawa H. The rpoZ gene, encoding the RNA polymerase omega subunit, is required for antibiotic production and morphological differentiation in Streptomyces kasugaensis. J Bacteriol 2002; 184:6417-23. [PMID: 12426327 PMCID: PMC135429 DOI: 10.1128/jb.184.23.6417-6423.2002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The occurrence of pleiotropic mutants that are defective in both antibiotic production and aerial mycelium formation is peculiar to streptomycetes. Pleiotropic mutant KSB was isolated from wild-type Streptomyces kasugaensis A1R6, which produces kasugamycin, an antifungal aminoglycoside antibiotic. A 9.3-kb DNA fragment was cloned from the chromosomal DNA of strain A1R6 by complementary restoration of kasugamycin production and aerial hypha formation to mutant KSB. Complementation experiments with deletion plasmids and subsequent DNA analysis indicated that orf5, encoding 90 amino acids, was responsible for the restoration. A protein homology search revealed that orf5 was a homolog of rpoZ, the gene that is known to encode RNA polymerase subunit omega (omega), thus leading to the conclusion that orf5 was rpoZ in S. kasugaensis. The pleiotropy of mutant KSB was attributed to a 2-bp frameshift deletion in the rpoZ region of mutant KSB, which probably resulted in a truncated, incomplete omega of 47 amino acids. Furthermore, rpoZ-disrupted mutant R6D4 obtained from strain A1R6 by insertion of Tn5 aphII into the middle of the rpoZ-coding region produced neither kasugamycin nor aerial mycelia, similar to mutant KSB. When rpoZ of S. kasugaensis and Streptomyces coelicolor, whose deduced products differed in the sixth amino acid residue, were introduced into mutant R6D4 via a plasmid, both transformants produced kasugamycin and aerial hyphae without significant differences. This study established that rpoZ is required for kasugamycin production and aerial mycelium formation in S. kasugaensis and responsible for pleiotropy.
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Affiliation(s)
- Ikuo Kojima
- Department of Biotechnology, Faculty of Bioresource Sciences, Akita Prefectural University, Akita 010-0195, Japan.
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Kataoka M, Seki T, Yoshida T. Five genes involved in self-transmission of pSN22, a Streptomyces plasmid. J Bacteriol 1991; 173:4220-8. [PMID: 2061295 PMCID: PMC208073 DOI: 10.1128/jb.173.13.4220-4228.1991] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
An 11-kbp multicopy plasmid, pSN22, was isolated from Streptomyces nigrifaciens SN22. pSN22 is self-transmissible (conjugative), is maintained stably in S. lividans, and forms pocks in a wide range of Streptomyces strains. Mutational analyses showed that a fragment of pSN22 contained five genes involved in plasmid transfer and pock formation. traB was essential for plasmid transfer. traA was required for pock formation, but not for plasmid transfer. spdA or spdB were concerned with pock size; mutations in these genes decreased pock size. The fifth gene, traR, could be deleted together with other genes to give nontransmissible plasmids, but plasmids with insertions or deletions only within traR became nonviable. traR is probably needed to counterbalance the lethal effects of another plasmid gene. Transfer of pSN22 promoted the cotransfer of nontransmissible plasmids and enhanced chromosome recombination between the host and recipient strains, suggesting that plasmid transfer accompanies cytoplasmic mixing.
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Affiliation(s)
- M Kataoka
- International Center of Cooperative Research in Biotechnology, Japan
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Abstract
pMG200, isolated from the bacteriocin-releasing strain Streptomyces chrysomallus, was further physically mapped. Variants of S. chrysomallus were isolated which inhibited the parental strain. Two types of plasmids, pMG210 and pMG220, were isolated from these variants, with copy numbers of 10-30 and 300, respectively, compared with 1-3 for pMG200. pMG210 is apparently physically identical to pMG200 but presumably differs at a level not detected by simple restriction mapping; pMG220 is deleted for 1.6 kb. Genes for thiostrepton and viomycin resistance were subcloned from pIJ364 on to pMG200 and a fragment containing the gene for nourseothricin resistance was subcloned on to pMG220. In this way nonessential sites were identified.
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