抄録
We investigated the gene structure and predicted amino acid sequence of the antioxidant enzyme 2-Cys peroxiredoxin (2-Cys Prx) in the raphidophyte Chattonella marina, which is a harmful algal bloom (HAB) species. The open reading frame of 2-Cys Prx was 585 bp long and encoded a protein consisting of 195 amino acids. The putative amino acid sequence contained two cysteine residues located at the 49th and 170th amino acid positions from the N-terminal methionine residue. The sequence also possessed 2-Cys Prx characteristic motifs, F (FFYPLDFTFVCPTEI) and EVCP. The position of the 2-Cys Prx gene relative to several others (ycf59–2-CysPrx–rpl35–rpl20) was the same as that found in the chloroplast genome in the raphidophyte Heterosigma akashiwo. Upstream of the 2-Cys Prx gene, possible TATA and GGA motifs recognized by nuclear-encoded plastid RNA polymerase (NEP), and a possible -10 box and -35 box recognized by plastid-encoded plastid RNA polymerase (PEP) were observed. We measured the transcript levels of 2-Cys Prx in C. marina cells grown under three different light intensities (0, 100, 1000 µmol photons m–2 s–1, 14-h light/8-h dark photoperiod) by quantitative PCR. The 2-Cys Prx transcript level in cells grown under the highest light intensity on day 3 was threefold that on day 0 but two lower light intensities resulted in relatively stable transcription levels. The 2-Cys Prx transcript level was significantly positively related to the H2O2 concentration per cell and the H2O2 scavenging activity per cell. These results suggest that C. marina 2-Cys Prx functions in the chloroplast and its transcription could be regulated by both NEP and PEP. Moreover, the 2-Cys Prx transcript level might increase to remove excessive H2O2 produced under strong light conditions in order to maintain cell proliferation activity.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 29-38 |
| ページ数 | 10 |
| ジャーナル | European Journal of Phycology |
| 巻 | 53 |
| 発行部数 | 1 |
| DOI | |
| 出版物ステータス | 出版済み - 1 2 2018 |
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All Science Journal Classification (ASJC) codes
- Aquatic Science
- Plant Science
これを引用
Gene structure and cDNA sequence of 2-Cys peroxiredoxin in the harmful algal bloom species Chattonella marina and its gene transcription under different light intensities. / Mukai, Koki; Teramoto, Ayano; Qiu, Xuchun; Shimasaki, Yohei; Kato-Unoki, Yoko; Lee, Man; Mizoguchi, Naohiro; Margia Khanam, Mst Ruhina; Satone, Hina; Tatsuke, Tsuneyuki; Kusakabe, Takahiro; Oshima, Yuji.
：: European Journal of Phycology, 巻 53, 番号 1, 02.01.2018, p. 29-38.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Gene structure and cDNA sequence of 2-Cys peroxiredoxin in the harmful algal bloom species Chattonella marina and its gene transcription under different light intensities
AU - Mukai, Koki
AU - Teramoto, Ayano
AU - Qiu, Xuchun
AU - Shimasaki, Yohei
AU - Kato-Unoki, Yoko
AU - Lee, Man
AU - Mizoguchi, Naohiro
AU - Margia Khanam, Mst Ruhina
AU - Satone, Hina
AU - Tatsuke, Tsuneyuki
AU - Kusakabe, Takahiro
AU - Oshima, Yuji
PY - 2018/1/2
Y1 - 2018/1/2
N2 - We investigated the gene structure and predicted amino acid sequence of the antioxidant enzyme 2-Cys peroxiredoxin (2-Cys Prx) in the raphidophyte Chattonella marina, which is a harmful algal bloom (HAB) species. The open reading frame of 2-Cys Prx was 585 bp long and encoded a protein consisting of 195 amino acids. The putative amino acid sequence contained two cysteine residues located at the 49th and 170th amino acid positions from the N-terminal methionine residue. The sequence also possessed 2-Cys Prx characteristic motifs, F (FFYPLDFTFVCPTEI) and EVCP. The position of the 2-Cys Prx gene relative to several others (ycf59–2-CysPrx–rpl35–rpl20) was the same as that found in the chloroplast genome in the raphidophyte Heterosigma akashiwo. Upstream of the 2-Cys Prx gene, possible TATA and GGA motifs recognized by nuclear-encoded plastid RNA polymerase (NEP), and a possible -10 box and -35 box recognized by plastid-encoded plastid RNA polymerase (PEP) were observed. We measured the transcript levels of 2-Cys Prx in C. marina cells grown under three different light intensities (0, 100, 1000 µmol photons m–2 s–1, 14-h light/8-h dark photoperiod) by quantitative PCR. The 2-Cys Prx transcript level in cells grown under the highest light intensity on day 3 was threefold that on day 0 but two lower light intensities resulted in relatively stable transcription levels. The 2-Cys Prx transcript level was significantly positively related to the H2O2 concentration per cell and the H2O2 scavenging activity per cell. These results suggest that C. marina 2-Cys Prx functions in the chloroplast and its transcription could be regulated by both NEP and PEP. Moreover, the 2-Cys Prx transcript level might increase to remove excessive H2O2 produced under strong light conditions in order to maintain cell proliferation activity.
AB - We investigated the gene structure and predicted amino acid sequence of the antioxidant enzyme 2-Cys peroxiredoxin (2-Cys Prx) in the raphidophyte Chattonella marina, which is a harmful algal bloom (HAB) species. The open reading frame of 2-Cys Prx was 585 bp long and encoded a protein consisting of 195 amino acids. The putative amino acid sequence contained two cysteine residues located at the 49th and 170th amino acid positions from the N-terminal methionine residue. The sequence also possessed 2-Cys Prx characteristic motifs, F (FFYPLDFTFVCPTEI) and EVCP. The position of the 2-Cys Prx gene relative to several others (ycf59–2-CysPrx–rpl35–rpl20) was the same as that found in the chloroplast genome in the raphidophyte Heterosigma akashiwo. Upstream of the 2-Cys Prx gene, possible TATA and GGA motifs recognized by nuclear-encoded plastid RNA polymerase (NEP), and a possible -10 box and -35 box recognized by plastid-encoded plastid RNA polymerase (PEP) were observed. We measured the transcript levels of 2-Cys Prx in C. marina cells grown under three different light intensities (0, 100, 1000 µmol photons m–2 s–1, 14-h light/8-h dark photoperiod) by quantitative PCR. The 2-Cys Prx transcript level in cells grown under the highest light intensity on day 3 was threefold that on day 0 but two lower light intensities resulted in relatively stable transcription levels. The 2-Cys Prx transcript level was significantly positively related to the H2O2 concentration per cell and the H2O2 scavenging activity per cell. These results suggest that C. marina 2-Cys Prx functions in the chloroplast and its transcription could be regulated by both NEP and PEP. Moreover, the 2-Cys Prx transcript level might increase to remove excessive H2O2 produced under strong light conditions in order to maintain cell proliferation activity.
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U2 - 10.1080/09670262.2017.1346206
DO - 10.1080/09670262.2017.1346206
M3 - Article
VL - 53
SP - 29
EP - 38
JO - European Journal of Phycology
JF - European Journal of Phycology
SN - 0967-0262
IS - 1
ER -