Initial electron transfer in photosynthetic reaction centers of Rhodobacter capsulatus mutants
نویسندگان
چکیده
Chi-Kin Chan a,b, Lin X-Q Chen ‘, Theodore J. DiMagno a, Deborah K. Hanson d, Sharron L. Nance d, Marianne Schiffer d, James R. Norris w and Graham R. Fleming a,b a Department oJChemlstry, The University of Chicago, Chicago, IL 60637, USA b James Franck Institute, The Wversity qf Chicago, Chicago, IL 60637, USA ’ Chemistry Dwion, Argonne National Laboratory, Argonne, IL 60439, USA d Biological and Medical Research Dwsion, Argonne National Laboratory, Argonne, IL 60439, USA
منابع مشابه
Trapping the P+B(L)- initial intermediate state of charge separation in photosynthetic reaction centers from Rhodobacter capsulatus.
The short-lived (<1 ps) initial intermediate state P(+)B(L)(-) in the photoinduced charge separation process of the bacterial photosynthetic reaction center has been trapped in two D(LL)-based Rhodobacter capsulatus mutants that have Tyr at position M208 and lack the bacteriopheophytin electron acceptor H(L). Transient state P(+)B(L)(-) is characterized by a 1017 nm bacteriochlorophyll anion ab...
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A novel chromophore composition of the bacterial photosynthetic reaction center (RC) has been discovered: RCs lacking the L-side monomeric bacteriochlorophyll chromophore result from mutation of the native isoleucine at M204 to glutamine in Rhodobacter capsulatus . This conclusion is obtained from 77 K UV-vis spectroscopy and pigment extractions of the I(M204)Q mutant and seven variants contain...
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