Inorganic electron donors and energetics 无机电子供体 ATP formation:oxidation of inorganic compounds ATP的形成：来自无机物的氧化 Example:Hydrogen oxidation/reduced sulfur compounds oxidation/iron oxidation/ nitrification ©Carbon sources From the organic compound (mixotrophic) Reducing power for CO2 fixation:Reverse electron transport reactions(autotrophic) Chen Feng,Microbiology,SJTUChen Feng, Microbiology, SJTU Inorganic electron donors and energetics 无机电子供体 ATP formation: oxidation of inorganic compounds ATP的形成:来自无机物的氧化 • Example: Hydrogen oxidation/ reduced sulfur compounds oxidation/ iron oxidation/ nitrification Carbon sources • From the organic compound (mixotrophic) • Reducing power for CO2 fixation: Reverse electron transport reactions (autotrophic)