Model studies to low-temperature optical transitions of photosynthetic reaction centers. II. Rhodobacter sphaeroides and Chloroflexus aurantiacus

P. O.J. Scherer; S. F. Fischer

doi:10.1016/0005-2728(87)90008-9

Model studies to low-temperature optical transitions of photosynthetic reaction centers. II. Rhodobacter sphaeroides and Chloroflexus aurantiacus

P. O.J. Scherer, S. F. Fischer

TUM Emeriti of Excellence

Technical University of Munich

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

The analysis of optical spectra for Rhodopseudomonas viridis from part I (Knapp, E.W., Scherer, P.O.J. and Fischer, S.F. (1986) Biochim. Biophys. Acta 852, 295-305) is extended to two other structurally similar reaction centers with different prosthetic groups (Rhodobacter sphaeroides and Chloroflexus aurantiacus). Assuming that the structure of the different reaction centers is similar, the interactions between the six prosthetic groups are calculated using the structure data from Rps. viridis. The absorbance, linear dichroism (LD), circular dichroism (CD), triplet-minus-singlet absorption-detected magnetic resonance (T - S ADMR) and its linear dichroism are simulated by an exciton model. The results point to partial delocalization of the special pair triplet state and its excitations.

Original language	English
Pages (from-to)	157-164
Number of pages	8
Journal	BBA - Bioenergetics
Volume	891
Issue number	2
DOIs	https://doi.org/10.1016/0005-2728(87)90008-9
State	Published - 15 Apr 1987

Keywords

(Rb. sphaeroides, C. aurantiacus)
Exciton model
Optical spectra simulation
Reaction center
Special-pair triplet state

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10.1016/0005-2728(87)90008-9

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title = "Model studies to low-temperature optical transitions of photosynthetic reaction centers. II. Rhodobacter sphaeroides and Chloroflexus aurantiacus",

abstract = "The analysis of optical spectra for Rhodopseudomonas viridis from part I (Knapp, E.W., Scherer, P.O.J. and Fischer, S.F. (1986) Biochim. Biophys. Acta 852, 295-305) is extended to two other structurally similar reaction centers with different prosthetic groups (Rhodobacter sphaeroides and Chloroflexus aurantiacus). Assuming that the structure of the different reaction centers is similar, the interactions between the six prosthetic groups are calculated using the structure data from Rps. viridis. The absorbance, linear dichroism (LD), circular dichroism (CD), triplet-minus-singlet absorption-detected magnetic resonance (T - S ADMR) and its linear dichroism are simulated by an exciton model. The results point to partial delocalization of the special pair triplet state and its excitations.",

keywords = "(Rb. sphaeroides, C. aurantiacus), Exciton model, Optical spectra simulation, Reaction center, Special-pair triplet state",

author = "Scherer, \{P. O.J.\} and Fischer, \{S. F.\}",

note = "Funding Information: The authors thank Dr. E.W. Knapp for many fruitful discussions and Dr. H. Vasmel for experimental information outlined in his thesis. This work was supported by the Deutsche For-schungsgemeinschaft (SFB 143).",

year = "1987",

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doi = "10.1016/0005-2728(87)90008-9",

language = "English",

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T1 - Model studies to low-temperature optical transitions of photosynthetic reaction centers. II. Rhodobacter sphaeroides and Chloroflexus aurantiacus

AU - Scherer, P. O.J.

AU - Fischer, S. F.

N1 - Funding Information: The authors thank Dr. E.W. Knapp for many fruitful discussions and Dr. H. Vasmel for experimental information outlined in his thesis. This work was supported by the Deutsche For-schungsgemeinschaft (SFB 143).

PY - 1987/4/15

Y1 - 1987/4/15

N2 - The analysis of optical spectra for Rhodopseudomonas viridis from part I (Knapp, E.W., Scherer, P.O.J. and Fischer, S.F. (1986) Biochim. Biophys. Acta 852, 295-305) is extended to two other structurally similar reaction centers with different prosthetic groups (Rhodobacter sphaeroides and Chloroflexus aurantiacus). Assuming that the structure of the different reaction centers is similar, the interactions between the six prosthetic groups are calculated using the structure data from Rps. viridis. The absorbance, linear dichroism (LD), circular dichroism (CD), triplet-minus-singlet absorption-detected magnetic resonance (T - S ADMR) and its linear dichroism are simulated by an exciton model. The results point to partial delocalization of the special pair triplet state and its excitations.

AB - The analysis of optical spectra for Rhodopseudomonas viridis from part I (Knapp, E.W., Scherer, P.O.J. and Fischer, S.F. (1986) Biochim. Biophys. Acta 852, 295-305) is extended to two other structurally similar reaction centers with different prosthetic groups (Rhodobacter sphaeroides and Chloroflexus aurantiacus). Assuming that the structure of the different reaction centers is similar, the interactions between the six prosthetic groups are calculated using the structure data from Rps. viridis. The absorbance, linear dichroism (LD), circular dichroism (CD), triplet-minus-singlet absorption-detected magnetic resonance (T - S ADMR) and its linear dichroism are simulated by an exciton model. The results point to partial delocalization of the special pair triplet state and its excitations.

KW - (Rb. sphaeroides, C. aurantiacus)

KW - Exciton model

KW - Optical spectra simulation

KW - Reaction center

KW - Special-pair triplet state

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DO - 10.1016/0005-2728(87)90008-9

M3 - Article

AN - SCOPUS:0023134432

SN - 0005-2728

VL - 891

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JO - BBA - Bioenergetics

JF - BBA - Bioenergetics

IS - 2

ER -

Model studies to low-temperature optical transitions of photosynthetic reaction centers. II. Rhodobacter sphaeroides and Chloroflexus aurantiacus

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Keywords

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