Abstract

PS I reaction center is a membrane-bound pigment-protein complex in the thylakoid membranes of higher plants, green algae and cyanobacteria. The photoactive components include the primary electron donor, P700, a primary electron acceptor Ao, an intermediate quinone acceptor A1 and three iron-sulphur centers Fx, FA and FB. Absorption of light brings about photochemical charge separation between P700 and Ao. From Ao the electron is shuttled through the intermediate acceptors A1 and Fx to the terminal acceptors FA/FB The purpose of this electron transport chain is to stabilize the transient charge separation that occurs between P700+ and Ao - which allows to occur efficient electron transfer between P700+ and plastocyanin, and between FA -/FB - and ferredoxin within the diffusion time of plastocyanin and ferredoxin.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.