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Komeyama M, Kanno K, Mino H, Yasuno Y, Shinada T, Ito T, Hemmi H. A [4Fe-4S] cluster resides at the active center of phosphomevalonate dehydratase, a key enzyme in the archaeal modified mevalonate pathway. Front Microbiol 2023; 14:1150353. [PMID: 36992929 PMCID: PMC10040528 DOI: 10.3389/fmicb.2023.1150353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 02/22/2023] [Indexed: 03/15/2023] Open
Abstract
The recent discovery of the archaeal modified mevalonate pathway revealed that the fundamental units for isoprenoid biosynthesis (isopentenyl diphosphate and dimethylallyl diphosphate) are biosynthesized via a specific intermediate, trans-anhydromevalonate phosphate. In this biosynthetic pathway, which is unique to archaea, the formation of trans-anhydromevalonate phosphate from (R)-mevalonate 5-phosphate is catalyzed by a key enzyme, phosphomevalonate dehydratase. This archaea-specific enzyme belongs to the aconitase X family within the aconitase superfamily, along with bacterial homologs involved in hydroxyproline metabolism. Although an iron–sulfur cluster is thought to exist in phosphomevalonate dehydratase and is believed to be responsible for the catalytic mechanism of the enzyme, the structure and role of this cluster have not been well characterized. Here, we reconstructed the iron–sulfur cluster of phosphomevalonate dehydratase from the hyperthermophilic archaeon Aeropyrum pernix to perform biochemical characterization and kinetic analysis of the enzyme. Electron paramagnetic resonance, iron quantification, and mutagenic studies of the enzyme demonstrated that three conserved cysteine residues coordinate a [4Fe-4S] cluster—as is typical in aconitase superfamily hydratases/dehydratases, in contrast to bacterial aconitase X-family enzymes, which have been reported to harbor a [2Fe-2S] cluster.
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Affiliation(s)
- Mutsumi Komeyama
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Kohsuke Kanno
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Hiroyuki Mino
- Graduate School of Science, Nagoya University, Nagoya, Aichi, Japan
| | - Yoko Yasuno
- Graduate School of Science, Osaka Metropolitan University, Sugimoto, Osaka, Japan
| | - Tetsuro Shinada
- Graduate School of Science, Osaka Metropolitan University, Sugimoto, Osaka, Japan
| | - Tomokazu Ito
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
| | - Hisashi Hemmi
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Aichi, Japan
- *Correspondence: Hisashi Hemmi,
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Yusa M, Nagata T. Photoreduction of quinones by thiols sensitized by phthalocyanines. Photochem Photobiol Sci 2017; 16:1043-1048. [DOI: 10.1039/c7pp00115k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Quinones were converted to hydroquinones by the action of red light (690 nm), with phthalocyanine as a photosensitizer and thiols as an electron donor.
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Affiliation(s)
- Masaaki Yusa
- Department of Structural Molecular Science
- The Graduate University for Advanced Studies
- Okazaki 444-8787
- Japan
| | - Toshi Nagata
- Department of Applied Chemistry
- Faculty of Science and Technology
- Meijo University
- Nagoya 468-8502
- Japan
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Sakakibara K, Nagino S, Akanuma H, Tsukada Y, Nakano H, Yagyu T, Takagi HD, Inamo M. Structure dependence of intramolecular electron transfer reactions of simple dyads of a zinc(ii) porphyrin complex bearing a peripheral bipyridine moiety. Dalton Trans 2017; 46:12645-12654. [DOI: 10.1039/c7dt02674a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photoinduced intramolecular electron transfer and charge recombination reactions were investigated using various Zn(ii)-porphyrin dyads having a 2,2′-bipyridine moiety.
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Affiliation(s)
- Kei Sakakibara
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
| | - Shou Nagino
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
| | - Hajime Akanuma
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
| | - Yuki Tsukada
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
| | - Hirofumi Nakano
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
| | - Takeyoshi Yagyu
- Department of Materials Science and Engineering
- Graduate School of Engineering
- Nagoya Institute of Technology
- Showa
- Japan
| | - Hideo D. Takagi
- Research Centre for Materials Science
- Nagoya University
- Chikusa
- Japan
| | - Masahiko Inamo
- Department of Chemistry
- Aichi University of Education
- Igaya
- Japan
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