Enzymes And Photosynthesis: 7 Facts You Should Know

This article illustrate all around information on enzymes and photosynthesis with different facts in detail.

The photosynthetic enzymes of the plant act as marker enzymes, that are important for mechanisms including oxygen-evolving complex for the light reaction to make food and energy for survival and growth.

Does photosynthesis require enzymes?

Yes, Photosynthesis requires an enzyme for the preparation of food for plants so that they can get energy and can use that energy for survival and growth. There is the light reaction of photosynthesis that mainly requires an enzyme for the water splitting mechanism to produce ATP.

The enzymes and photosynthesis, both are important for the plant. With the help of an enzyme, inorganic carbon can able to convert into organic carbon compounds such as glucose. It is one kind of metabolic process by which solar energy is converted into carbohydrate in plants in the presence of chlorophyll by using inorganic raw materials, water, and carbon dioxide by a series of enzyme catalytic reactions.The enzymes and photosynthesis has mostly significant role for plant that help in the light reaction of and also responsible for creating an energy gradient in the chloroplast,

Why enzymes are required in photosynthesis?

Enzymes are proteins that catalyze chemical reactions in living cells. All living organisms have active enzymes from bacteria to fungi and plants and animals. The reaction catalyzed by the enzymes includes respiration, photosynthesis, and fermentation. The plants require enzymes to absorb necessary nutrients, carry out photosynthesis, and so on.The enzymes and photosynthesis do very most specific function for plant’s life.

The enzymes which are found in plants that are helping to bind carbon dioxide to make sugars. One of the enzymes name RubisCo can do carbon fixation in plants. It represents a significant proportion of soluble protein in leaves and is thought to be the most abundant protein on earth.

The enzymes and photosynthesis
Light independant reaction from Wikipedia

Roles of enzymes in photosynthesis

During photosynthesis, enzymes cut up the electrons from water molecules to yield oxygen fuel and hydrogen ions. The enzymes assist in the chemical reactions to supply three carbon and hydrogen ions.

The enzyme also helps the autotrophs, diverse micro-organisms or plants, go through photosynthesis. It also helps in water splitting during the light reaction of photosynthesis, known as water oxidizing or oxygen-evolving complex. The relationship between enzymes and photosynthesis plays a very important role for better plant survival. The enzymes can harvest energy via photosynthesis from the sun and also do metabolic functions and help the catalyst and control important biological reactions. The most common example of enzymes that use in the process of photosynthesis includes PEP Carboxylase, Ribulose-1,5 bisphosphate oxygenase, or carboxylase.

The enzymes and photosynthesis
Light reaction by Rubisco from Wikipedia

What enzyme causes photosynthesis?

The Ribulose bisphosphate carboxylase or oxygenase is so abundant in photosynthesis because of its importance in the process. Rubisco is the enzyme that binds with carbon dioxide and makes it available for photosynthesis. It acts as a Carbon acceptor and oxygen acceptor in both types of plants such as C3 as well as C4. The different types of enzymes and photosynthesis has significant role for plant.

In C3 plants, only Rubisco is functional while in C4 plants both PEPCASE and RUBISCO are present. In C3, Rubisco is present in mesophyll while C4 rubisco is present in bundle sheath cell also known as a Kranz anatomy while Pepcase is present in Mesophyll.

How are enzymes used in photosynthesis?

The enzymes and photosynthesis play very important role for the growth of plants.The photosystem II, also known as a light reaction of photosynthesis involves the enzyme cytochrome-b6-f complex that helps in water splitting and separating into oxygen and hydrogen. In the presence of sunlight, the sun’s energy the plants use carbon dioxide from the atmosphere and water from soil or they’re surrounding to synthesize glucose

The water they take which split via the help of enzymes into electrons, oxygen and hydrogen ions. The oxygen goes into the atmosphere while electrons and hydrogen ions are used to make glucose in simple sugar. Such food is made by plants in their leaves.

C4 fixation by PEP Carboxylase from Wikipedia

Where are enzymes used in photosynthesis?

There are certain enzymes present in chloroplasts for their activity in photosynthesis such as NADP-Reductase that present in grana thylakoid on the stroma side of the chloroplast. These enzymes help in the light reaction of photosynthesis and are also responsible for creating an energy gradient in the chloroplast.

Another enzyme is Phosphoenol pyruvate which is present in mesophyll cells in C4 plants. It can act as a primary CO2 acceptor and is mainly responsible for the PEP Carboxylase fixation.Another is Photosystem II located in the thylakoid membrane and play a very important role in Non-cyclic photophosphorylation and is also responsible for the splitting of electron and water.

These all kinds of enzymes and photosynthesis process play a very important role, without these all enzymes, the process is not able to be completed because without enzymes, there is no catalytic reaction will happen, no water splitting can happen thus plant not able to make food for energy and survival.

What are photosynthetic enzymes in plants?

The photosynthetic enzymes of the plant act as marker enzymes, that are specifically produced by cell organelles. The one protein complex is also known as a photosystem II which has a substantial number of enzymes, coenzymes, and cofactors where it can help to split water into an electron, hydrogen, and atomic oxygen.

There is a reaction center that also contains a complex of pigments, co-factors, and enzymes. During the carbon fixation in photosynthesis that also contains Rubisco, enediol complex has an enzyme known as RuBisCo.The reaction catalyzed by the enzymes includes respiration, fermentation,photosynthesis.The plants require enzymes to absorb necessary nutrients, carry out photosynthesis, and so on.


The relationship between the enzymes and photosynthesis in which the reaction is catalyzed by the enzymes that play a very important role in photosynthesis, without them, the process is not able to make energy and food for the plant’s survival and growth.

Bhairavi Rathord

Hello, I am Bhairavi Rathod, qualified ICAR NET 2021 in Agricultural Biotechnology. My area of specialization is Integrated Biotechnology. I have the experience to teach and write very complex things in a simple way for learners. My LinkedIn profile: https://www.linkedin.com/in/bhairavi-rathod-806993130

Recent Posts