代謝産物であるダイメチル硫黄素プロピオネートは,海洋有機硫黄循環を延長する
Kathleen Thume1, Björn Gebser1, Liang Chen2
1Institute for Inorganic and Analytical Chemistry, Bioorganic Analytics, Friedrich Schiller University Jena, Jena, Germany.
Nature
|November 16, 2018
まとめ
科学者たちは,ダイメチル硫フォニオプロピオネート (DMSOP) から生成される新しい海洋代謝物質を発見しました. この発見は,海洋硫黄循環とダイメチル硫酸化物 (DMSO) 生産に大きく寄与する,以前は知られていなかった経路を明らかにした.
科学分野:
- 海洋生物学
- 生地化学
- 微生物生態学
背景:
- 藻類は海中の有機硫黄循環に 重要な化合物である ダイメチル硫黄プロピオネート (DMSP) を大量に生成します
- DMSPは,大気への放出のためにディメチル硫化物 (DMS) に変換されるか,ディメチル硫酸化物 (DMSO) と他の製品に酸化される.
- 海洋の硫黄循環は 硫黄を含む有機分子の複雑な変換を含んでいます
研究 の 目的:
- 海洋有機硫黄循環に関わる新しい代謝物を特定し,特徴づけること.
- 新しく発見された化合物の起源と代謝の運命を調査する
- 海洋生物化学におけるこの新しい経路の重要性を評価する.
主な方法:
- 新しい代謝物の分離と構造の解明
- 代謝経路を追跡するための同位体標識研究
- 環境サンプルと培養物の代謝物の定量化
主要な成果:
- マイクロ藻類と海洋バクテリアによって合成される構造的に異常な代謝物であるダイメチルスルフォキシオニウムプロピオネート (DMSOP) の発見.
- DMSOPはDMSPから生成され,海洋細菌によって容易にDMSOに代謝される.
- DMSOPの海洋環境におけるナノモラー濃度の検出は,これまで認識されていない生物学的DMSO源を示しています.
結論:
- DMSOPは,海洋硫黄循環内の新たに特定された経路の重要な代謝物質です.
- この経路は,大気中のDMS流に匹敵する海洋酸化硫黄の生産に大きく貢献しています.
- この発見は,海洋生物化学プロセスと有機硫黄循環におけるDMSOPの重要性を強調しています.
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