How is carbon dioxide fixation carried out in the Calvin cycle reaction, and what is the process of CO2 fixation like?

During the Calvin cycle reaction, carbon dioxide fixation is carried out by the enzyme ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO). This enzyme catalyzes the reaction between carbon dioxide and ribulose-1,5-bisphosphate (RuBP) to form two molecules of 3-phosphoglycerate (3-PGA). This process is essential for plants to convert carbon dioxide into organic compounds, such as sugars, through photosynthesis.