What Is Rubisco

Carbon fixation is a process by which the atoms of atmospheric carbon dioxide are made available to organisms in the form of energy rich molecules such as glucose.

What is rubisco. Rubisco takes carbon dioxide and attaches it to ribulose bisphosphate a short sugar chain with five carbon atoms. Rubisco is thought to be the most abundant protein in the world since it is present in every plant that undergoes photosynthesis and molecular synthesis through the calvin cycle. Inside plant cells the enzyme ribulose bisphosphate carboxylase oxygenase rubisco shown here from pdb entry 1rcx forms the bridge between life and the lifeless creating organic carbon from the inorganic carbon dioxide in the air. Therefore plant rubisco is expected to be a large source of food protein in the future.

Rī byū lās bis fos fāt kar boks il ās a dimerizing carboxy lyase. An enzyme present in plant chloroplasts involved in fixing atmospheric carbon dioxide during photosynthesis and in oxygenation of the resulting compound during photorespiration. Rubisco is a special type of protein called an enzyme. Like other enzymes rubisco has active sites that bind to the substrates making reactions occur faster.

Rubisco is ubiquitus for photosynthetic organisms and is regarded as the most abundant protein on earth from a nutritional point of view the large subunit of rubisco has an exceptionally ideal composition of essential amino acids among plant proteins. An enzyme that catalyzes the addition of carbon dioxide to d ribulose 1 5 bisphosphate and the hydrolysis of the addition product to two molecules of 3 d phosphoglyceric acid a key reaction in the fixation of co 2 in photosynthesis. Ribulose 1 5 bisphosphate carboxylase oxygenase rubisco click again to see term 1 11 you might also like. Ribulose 1 5 bisphosphate carboxylase oxygenase better known as rubisco is an enzyme that catalyzes the first major step of carbon fixation in the calvin cycle.

The research also opens the door to new strategies that could help crop plants sidestep the unwanted climate driven influences on rubisco activase and the negative impacts on rubisco and photosynthesis.