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Kudo F, Mori A, Koide M, Yajima R, Takeishi R, Miyanaga A, Eguchi T. One-pot enzymatic synthesis of 2-deoxy-scyllo-inosose from d-glucose and polyphosphate. Biosci Biotechnol Biochem 2021; 85:108-114. [PMID: 33577648 DOI: 10.1093/bbb/zbaa025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 08/27/2020] [Indexed: 11/14/2022]
Abstract
2-Deoxy-scyllo-inosose (2DOI, [2S,3R,4S,5R]-2,3,4,5-tetrahydroxycyclohexan-1-one) is a biosynthetic intermediate of 2-deoxystreptamine-containing aminoglycoside antibiotics, including butirosin, kanamycin, and neomycin. In producer microorganisms, 2DOI is constructed from d-glucose 6-phosphate (G6P) by 2-deoxy-scyllo-inosose synthase (DOIS) with the oxidized form of nicotinamide adenine dinucleotide (NAD+). 2DOI is also known as a sustainable biomaterial for production of aromatic compounds and a chiral cyclohexane synthon. In this study, a one-pot enzymatic synthesis of 2DOI from d-glucose and polyphosphate was investigated. First, 3 polyphosphate glucokinases (PPGKs) were examined to produce G6P from d-glucose and polyphosphate. A PPGK derived from Corynebacterium glutamicum (cgPPGK) was found to be suitable for G6P production under ordinary enzymatic conditions. Next, 7 DOISs were examined for the one-pot enzymatic reaction. As a result, cgPPGK and BtrC, the latter of which is a DOIS derived from the butirosin producer Bacillus circulans, achieved nearly full conversion of d-glucose to 2DOI in the presence of polyphosphate.
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Affiliation(s)
- Fumitaka Kudo
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Ayaka Mori
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Mai Koide
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Ryo Yajima
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Ryohei Takeishi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Akimasa Miyanaga
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
| | - Tadashi Eguchi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, Japan
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Lim JH, Hwang HH, Lee NJ, Lee JW, Seo EG, Son HB, Kim HJ, Yoon YJ, Park JW. Enhanced Biosynthesis of 2-Deoxy- scyllo-inosose in Metabolically Engineered Bacillus subtilis Recombinants. Front Microbiol 2018; 9:2333. [PMID: 30319595 PMCID: PMC6170601 DOI: 10.3389/fmicb.2018.02333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 09/11/2018] [Indexed: 11/19/2022] Open
Abstract
2-Deoxy-scyllo-inosose (DOI) has been a valuable starting natural product for the manufacture of pharmaceuticals or chemical engineering resources such as pyranose catechol. DOI synthase, which uses glucose-6-phosphate (Glc6P) as a substrate for DOI biosynthesis, is indispensably involved in the initial stage of the biosynthesis of 2-deoxystreptamine-containing aminoglycoside antibiotics including butirosin, gentamicin, kanamycin, and tobramycin. A number of metabolically engineered recombinant strains of Bacillus subtilis were constructed here; either one or both genes pgi and pgcA that encode Glc6p isomerase and phosphoglucomutase, respectively, was (or were) disrupted in the sugar metabolic pathway of the host. After that, three different DOI synthase–encoding genes, which were artificially synthesized according to the codon preference of the B. subtilis host, were separately introduced into the engineered recombinants. The expression of a natural btrC gene, encoding DOI synthase in butirosin-producing B. circulans, in the heterologous host B. subtilis (BSDOI-2) generated approximately 2.3 g/L DOI, whereas expression of an artificially codon-optimized tobC gene, derived from tobramycin-producing Streptomyces tenebrarius, into the recombinant of B. subtilis (BSDOI-15) in which both genes pgi and pgcA are disrupted significantly enhanced the DOI titer: up to 37.2 g/L. Fed-batch fermentation by the BSDOI-15 recombinant using glycerol and glucose as a dual carbon source yielded the highest DOI titer (38.0 g/L). The development of engineered microbial cell factories empowered through convergence of metabolic engineering and synthetic biology should enable mass production of DOI. Thus, strain BSDOI-15 will surely be a useful contributor to the industrial manufacturing of various kinds of DOI-based pharmaceuticals and fine chemicals.
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Affiliation(s)
- Joo Hyun Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Hyun Ha Hwang
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Na Joon Lee
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Jae Woo Lee
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Eun Gyo Seo
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Hye Bin Son
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Hye Ji Kim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea
| | - Yeo Joon Yoon
- Department of Chemistry and Nanoscience, Ewha Womans University, Seoul, South Korea
| | - Je Won Park
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, South Korea.,School of Biosystem and Biomedical Science, Korea University, Seoul, South Korea
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Watanabe S, Ozawa H, Kato H, Nimura-Matsune K, Hirayama T, Kudo F, Eguchi T, Kakinuma K, Yoshikawa H. Carbon-free production of 2-deoxy-scyllo-inosose (DOI) in cyanobacterium Synechococcus elongatus PCC 7942. Biosci Biotechnol Biochem 2018; 82:161-165. [PMID: 29297252 DOI: 10.1080/09168451.2017.1411777] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Owing to their photosynthetic capabilities, there is increasing interest in utilizing cyanobacteria to convert solar energy into biomass. 2-Deoxy-scyllo-inosose (DOI) is a valuable starting material for the benzene-free synthesis of catechol and other benzenoids. DOI synthase (DOIS) is responsible for the formation of DOI from d-glucose-6-phosphate (G6P) in the biosynthesis of 2-deoxystreptamine-containing aminoglycoside antibiotics such as neomycin and butirosin. DOI fermentation using a recombinant Escherichia coli strain has been reported, although a carbon source is necessary for high-yield DOI production. We constructed DOI-producing cyanobacteria toward carbon-free and sustainable DOI production. A DOIS gene derived from the butirosin producer strain Bacillus circulans (btrC) was introduced and expressed in the cyanobacterium Synechococcus elongatus PCC 7942. We ultimately succeeded in producing 400 mg/L of DOI in S. elongatus without using a carbon source. DOI production by cyanobacteria represents a novel and efficient approach for producing benzenoids from G6P synthesized by photosynthesis.
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Affiliation(s)
- Satoru Watanabe
- a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan
| | - Hiroaki Ozawa
- a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan
| | - Hiroaki Kato
- a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan
| | | | - Toshifumi Hirayama
- b Department of Chemistry , Tokyo Institute of Technology , Tokyo , Japan
| | - Fumitaka Kudo
- b Department of Chemistry , Tokyo Institute of Technology , Tokyo , Japan
| | - Tadashi Eguchi
- b Department of Chemistry , Tokyo Institute of Technology , Tokyo , Japan
| | - Katsumi Kakinuma
- b Department of Chemistry , Tokyo Institute of Technology , Tokyo , Japan
| | - Hirofumi Yoshikawa
- a Department of Bioscience , Tokyo University of Agriculture , Tokyo , Japan
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