15N electron nuclear double resonance of the primary donor cation radical P+.865 in reaction centers of Rhodopseudomonas sphaeroides: additional evidence for the dimer model.
15N electron nuclear double resonance of the primary donor cation radical P+.865 in reaction centers of Rhodopseudomonas sphaeroides: additional evidence for the dimer model.
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球形红假单胞菌反应中心主要供体阳离子自由基 P .865 的 15N 电子核双共振:二聚体模型的额外证据。
DOI:
10.1073/pnas.81.24.7792
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发表时间:
1984
影响因子:
11.1
通讯作者:
Feher,G
中科院分区:
文献类型:
--
作者:
Lubitz,W;Isaacson,RA;Abresch,EC;Feher,G
Four 15N hyperfine coupling constants, including signs, have been measured by electron nuclear double resonance (ENDOR) and electron nuclear nuclear triple resonance (TRIPLE) for the bacteriochlorophyll a radical cation, BChla+., in vitro and for the light-induced primary donor radical cation, P+.865, in reaction centers of Rhodopseudomonas sphaeroides R-26. A comparison of the data shows that the hyperfine coupling constants have the same sign in both radicals and are, on the average, smaller by a factor of 2 in P+.865. These results provide additional evidence that P+.865 is a bacteriochlorophyll dimer and are in contradiction with the monomer structure of P+.865 recently proposed by O'Malley and Babcock. The reduction factors of the individual 15N couplings, together with the evidence from proton ENDOR data and molecular orbital calculations, indicate a dimer structure in which only two rings (either I and I or III and III) of the bacteriochlorophyll macrocycles overlap.
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DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
D. Brogan;N. Kutner
通讯作者:
N. Kutner
影响因子:
4
作者:
HESS, TM
通讯作者:
HESS, TM
DOI:
--
发表时间:
1969
期刊:
影响因子:
--
作者:
C. V. Lair;W. H. Moon;D. Kausler
通讯作者:
D. Kausler
影响因子:
4.6
作者:
S. Korchin;H. Basowitz
通讯作者:
H. Basowitz