Abstract
In the photosynthetic bacterial reaction center (RC), the electron transfer reaction proceeds from the primary electron donor P, a dimer of bacteriochlorophyll, via an intermediate acceptor (a bacteriopheophytin molecule) to a primary quinone QA and then to a secondary quinone QB. In Rb. sphaeroides RC, both quinones are ubiquinone while in Rps. viridis RC, QA is a menaquinone and QB is a ubiquinone. In addition, charge recombination between P+ and QA − or P+ and QB − proceeds faster in Rps. viridis (≈1 msec and ≈100 msec, respectively [1]) than in Rb. sphaeroides (≈100 msec and a few sec, respectively [2]) RCs. Below 100K, the electron is no longer transferred from QA to QB [3].
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
