The fixation step is catalyzed by the enzyme RUBISCO (ribulose1,5biphosphate carboxylase/oxygenase): + CO2 2 Glycerate-3-phosphate The synthesis of D-Ribulose 1,5-bisphosphate (C01182) can be found in KEGG pathway maps MAP00630 (Glyoxylate and dicarboxylate metabolism) and MAP00710 (Carbon fixation). The carboxylase/oxygenase enzymes catalyzing this carbon dioxide fixing reaction have E.C.
How do trees grow? What about flowers? Vegetables of any kind? All of these plants require photosynthesis, which is a chemical reaction that plants use to grow. Plants that rely on photosynthesis for survival produce grains, sugar, and many other goodies. Without chemical reactions, cookies just wouldn't be the same.
I should point out that both the photo and the synthesis parts of photosynthesis aremultiple step reactions. Quite a number of steps are involved in separating hydrogen andelectrons from oxygen in water. Similarly, quite a number of step are involved in removingoxygen from carbon dioxide and incorporating hydrogen and additional electrons into thecompound. Also, the carbon dioxide is not used to create a new compound as such, butinstead, the carbon is incorporated into existing carbon-containing compounds in a waythat makes them larger than they were before.
Because this process is the result of the competition of molecular oxygen and carbon dioxide for Rubisco, photorespiration reduces the overall yield of photosynthesis (light plus dark reaction).