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논문 기본 정보

자료유형
학술저널
저자정보
Kamei Ichiro (Faculty of Agriculture University of Miyazaki 1-1 Gakuen-kibanadai-nishi Miyazaki 889-2192 JapanGra) Tomitaka Nana (Faculty of Agriculture University of Miyazaki 1-1 Gakuen-kibanadai-nishi Miyazaki 889-2192 Japan) Motoda Taichi (Graduate School of Agriculture and Engineering University of Miyazaki 1-1 Gakuen-kibanadai-nishi Mi) Yamasaki Yumi (Faculty of Regional Innovation University of Miyazaki 1-1 Gakuen-kibanadai-nishi Miyazaki 889-2192)
저널정보
한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제32권 제2호
발행연도
2022.2
수록면
248 - 255 (8page)
DOI
10.4014/jmb.2108.08042

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Phlebia sp. MG-60 is the salt-tolerant, white-rot fungus which was isolated from a mangrove forest. This fungus expresses three kinds of manganese peroxidase (MGMnP) isozymes, MGMnP1, MGMnP2 and MGMnP3 in low nitrogen medium (LNM) or LNM containing NaCl. To date, there have been no reports on the biochemical salt-tolerance of these MnP isozymes due to the difficulty of purification. In present study, we established forced expression transformants of these three types of MnP isozymes. In addition, the fact that this fungus hardly produces native MnP in a high-nitrogen medium (HNM) was used to perform isozyme-selective expression and simple purification in HNM. The resulting MGMnPs showed high tolerance for NaCl compared with the MnP of Phanerochaete chrysosporium. It was worth noting that high concentration of NaCl (over 200 mM to 1200 mM) can enhance the activity of MGMnP1. Additionally, MGMnP1 showed relatively high thermo tolerance compared with other isozymes. MGMnPs may have evolved to adapt to chloride-rich environments, mangrove forest.

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