Impact of Single-Point Mutations on the Excitonic Structure and Dynamics in a Fenna-Matthews-Olson Complex.
Impact of Single-Point Mutations on the Excitonic Structure and Dynamics in a Fenna-Matthews-Olson Complex.
复制标题
单点突变对 Fenna-Matthews-Olson 复合体激子结构和动力学的影响。
DOI:
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发表时间:
2018
影响因子:
5.7
通讯作者:
R. Jankowiak
中科院分区:
文献类型:
--
作者:
A. Khmelnitskiy;T. Reinot;R. Jankowiak
Hole burning (HB) spectroscopy and modeling studies reveal significant changes in the excitonic structure and dynamics in several mutants of the FMO trimer from the Chlorobaculum tepidum. The excited-state decay times ( T1) of the high-energy excitons are significantly modified when mutation occurs near bacteriochlorophyll (BChl) 1 (V152N mutant) or BChl 6 (W184F). Longer (averaged) T1 times of highest-energy excitons in V152N and W184F mutants suggest that site energies of BChls 1 and 6, believed to play an important role in receiving excitation from the baseplate BChls, likely play a critical role to ensure the femtosecond (fs) energy relaxation observed in wild-type FMO. HB spectroscopy reveals preferentially slower T1 times (about 1 ps on average) because fs times prohibit HB due to an extremely low HB quantum yield. Uncorrelated (incoherent) excitation energy transfer times between monomers, the composition of exciton states, and average, frequency-dependent, excited-state decay times ( T1) are discussed.
DOI:
10.1021/jz2007676
发表时间:
2011-06-30
期刊:
The journal of physical chemistry letters
影响因子:
--
作者:
Olbrich C;Strümpfer J;Schulten K;Kleinekathöfer U
通讯作者:
Kleinekathöfer U
DOI:
10.1021/jz402000c
发表时间:
2013
期刊:
The journal of physical chemistry letters
影响因子:
--
作者:
Cole DJ
通讯作者:
Cole DJ
DOI:
10.1073/pnas.1702261114
发表时间:
2017-08-08
影响因子:
11.1
作者:
Duan, Hong-Guang;Prokhorenko, Valentyn I.;Miller, R. J. Dwayne
通讯作者:
Miller, R. J. Dwayne