G3P molocules
C:G3P Molecules
Calvin & Benson cycle of Photosynthesis
The Calvin cycle is a metabolic pathway found in the stroma of the chloroplast in which carbon enters in the form of CO2 and leaves in the form of sugar.The cycle spends ATP as an energy source and consumes NADPH2 as reducing power for adding high energy electrons to make the sugar.
Organic compounds such as glucose, starch, sucrose, and cellulose can be made from the products of the Calvin cycle. These compounds are essential for plant growth and serve as energy sources and structural components in plants.
Melvin Calvin was a Nobel Prize-winning American biochemist known for his discoveries on the carbon dioxide assimilation in plants, particularly the Calvin cycle, which is a series of chemical reactions that occur during photosynthesis. His work significantly advanced our understanding of how plants convert carbon dioxide into organic compounds using energy from sunlight.
A key product of the Calvin cycle is glyceraldehyde-3-phosphate (G3P), which is a three-carbon sugar. G3P can be further processed to form glucose, phosphate, amino acids, or fatty acids, depending on the plant's metabolic needs. This versatility allows plants to synthesize various organic compounds essential for growth and energy storage.
The main product of the Calvin cycle is glucose, which is a vital energy source for plants. In the process, carbon dioxide is fixed and converted into glucose with the help of ATP and NADPH produced in the light reactions of photosynthesis.
Melvin Calvin received the Nobel Prize in Chemistry in 1961 for his research on the carbon dioxide assimilation in plants, specifically for elucidating the pathway of carbon fixation in photosynthesis known as the Calvin Cycle. His work helped advance the understanding of how plants convert carbon dioxide into organic compounds, a process crucial for all life on Earth.
In C4 plants, the first product of CO2 fixation is a 4-carbon compound called oxaloacetate. In CAM plants, the first product of CO2 fixation is converted into malate or another 4-carbon organic acid. These compounds help minimize photorespiration and increase the efficiency of carbon fixation in these plants.
PGAL is more commonly know as G3P, or glyceraldehyde-3-phosphate. It is the final product of the Calvin Cycle, or the dark reaction in plants. Two G3P molecules, which are each 3-carbon compounds, go on to create glucose. RuBP is ribulose bis phosphate . It is an organic compound used in Calvin cycle, it is used to fix CO2 during Calvin cycle . where one CO2 molecule is covalently bonded to RuBP to form an unstable intermediary compound that later breaks down by an enzymatic reactions to form G3P. It is vital for carbon fixation in plants.
The Calvin cycle occurs in the stroma of chloroplasts. Chloroplasts are plants that contain the pigment chlorophyll, which makes plants green.
Plants need them in the Calvin cycle