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Ferredoxin reducing substance (FeS)is the primary acceptor of PS1 in cyclic as well as non cyclic phtophosporylation

Primary Electron Acceptor in Photosystem 1:

Photosystem 1 is a complex of proteins and pigments that are involved in the process of photosynthesis. It is responsible for the capture of light energy and its conversion into chemical energy in the form of ATP and NADPH. The primary electron acceptor in photosystem 1 is a molecule called ferredoxin.

What is Ferredoxin?

Ferredoxin is a small protein that contains an iron-sulfur center. It is a redox-active protein that is involved in the transfer of electrons in various metabolic processes, including photosynthesis. In photosystem 1, ferredoxin acts as the primary electron acceptor, which means that it accepts electrons from the excited chlorophyll molecules.

How Does Ferredoxin Work in Photosystem 1?

When a chlorophyll molecule in photosystem 1 absorbs a photon of light, it becomes excited and transfers its energy to a neighboring chlorophyll molecule until it reaches the reaction center, where it is transferred to a molecule of ferredoxin. Ferredoxin then accepts the electron and becomes reduced, which means that it gains an electron. The electron that is transferred to ferredoxin is then used to reduce NADP+ to NADPH, which is an important molecule in the process of photosynthesis.

Conclusion:

In conclusion, ferredoxin is the primary electron acceptor in photosystem 1. It plays a crucial role in the transfer of electrons from excited chlorophyll molecules to NADP+, which is needed for the production of ATP and NADPH. Ferredoxin is a redox-active protein that contains an iron-sulfur center and is involved in various metabolic processes, including photosynthesis.