The simulation of interquinone charge transfer in a bacterial photoreaction center highlights the central role of a hydrogen-bonded non-heme iron complex.
The simulation of interquinone charge transfer in a bacterial photoreaction center highlights the central role of a hydrogen-bonded non-heme iron complex.
复制标题
细菌光反应中心间醌电荷转移的模拟凸显了氢键非血红素铁络合物的核心作用。
DOI:
10.1016/j.bbabio.2010.08.001
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
Thorsten Koslowski
中科院分区:
文献类型:
--
作者:
Fabian Burggraf;Thorsten Koslowski
We consider electron transfer between the quinones QAand QB, one of the final steps in the photoinduced charge separation in the photoreaction center of Rhodobacter sphaeroides. The system is described by a model with atomic resolution using classical force fields and a carefully parameterized tight-binding Hamiltonian. The rates estimated for direct interquinone charge transfer hopping involving a non-heme iron complex bridging the quinones and superexchange based on the geometry of the photochemically inactive dark state are orders of magnitude smaller than those obtained experimentally. Only if the iron complex is attached to both quinones via hydrogen bonds – as characteristic of the charge transfer active light state – the computed rate for superexchange involving the histidine ligands of the complex will become comparable to the experimental value of kCT=105s−1.
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影响因子:
2.9
作者:
CHANG, CH;ELKABBANI, O;SCHIFFER, M
通讯作者:
SCHIFFER, M
影响因子:
56.9
作者:
Stowell, MHB;McPhillips, TM;Feher, G
通讯作者:
Feher, G
DOI:
10.1073/pnas.84.16.5730
发表时间:
1987-08-01
影响因子:
11.1
作者:
ALLEN, JP;FEHER, G;REES, DC
通讯作者:
REES, DC
DOI:
10.1073/pnas.84.17.6162
发表时间:
1987-09-01
影响因子:
11.1
作者:
ALLEN, JP;FEHER, G;REES, DC
通讯作者:
REES, DC