Excitation energy flow in chlorosome antennas of green photosynthetic bacteria

Mamoru Mimuro; Tsunenori Nozawa; Naoto Tamai; Keizou Shimada; Iwao Yamazaki; Su Lin; Robert S. Knox; Bruce P. Wittmershaus; Daniel C. Brune; Robert E. Blankenship

doi:10.1021/j100358a047

Excitation energy flow in chlorosome antennas of green photosynthetic bacteria

Mamoru Mimuro, Tsunenori Nozawa, Naoto Tamai, Keizou Shimada, Iwao Yamazaki, Su Lin, Robert S. Knox, Bruce P. Wittmershaus, Daniel C. Brune, Robert E. Blankenship

School of Science (Behrend)

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

94 Scopus citations

Abstract

Energy flow in whole cells of the thermophilic green photosynthetic bacterium Chloroflexus aurantiacus was studied by measurements of time-resolved fluorescence spectra in the picosecond time range, detected by both streak camera and single-photon counting methods. These data characterize the energy-transfer sequence from bacteriochlorophyll c (BChl c), found in membrane-associated antenna structures called chlorosomes, to BChl a in the chlorosome baseplate, then to a BChl a antenna complex in the cytoplasmic membrane, and finally to the photochemical reaction center. Upon selective excitation of BChl c in chlorosomes, the decay time of the emission arising from BChl c was 16 ps. The apparent rise time of the emission from the baseplate pigment was <3 ps.

Original language	English (US)
Pages (from-to)	7503-7509
Number of pages	7
Journal	Journal of physical chemistry
Volume	93
Issue number	21
DOIs	https://doi.org/10.1021/j100358a047
State	Published - 1989

All Science Journal Classification (ASJC) codes

General Engineering
Physical and Theoretical Chemistry

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10.1021/j100358a047

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title = "Excitation energy flow in chlorosome antennas of green photosynthetic bacteria",

abstract = "Energy flow in whole cells of the thermophilic green photosynthetic bacterium Chloroflexus aurantiacus was studied by measurements of time-resolved fluorescence spectra in the picosecond time range, detected by both streak camera and single-photon counting methods. These data characterize the energy-transfer sequence from bacteriochlorophyll c (BChl c), found in membrane-associated antenna structures called chlorosomes, to BChl a in the chlorosome baseplate, then to a BChl a antenna complex in the cytoplasmic membrane, and finally to the photochemical reaction center. Upon selective excitation of BChl c in chlorosomes, the decay time of the emission arising from BChl c was 16 ps. The apparent rise time of the emission from the baseplate pigment was <3 ps.",

author = "Mamoru Mimuro and Tsunenori Nozawa and Naoto Tamai and Keizou Shimada and Iwao Yamazaki and Su Lin and Knox, {Robert S.} and Wittmershaus, {Bruce P.} and Brune, {Daniel C.} and Blankenship, {Robert E.}",

year = "1989",

doi = "10.1021/j100358a047",

language = "English (US)",

volume = "93",

pages = "7503--7509",

journal = "Journal of physical chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "21",

}

TY - JOUR

T1 - Excitation energy flow in chlorosome antennas of green photosynthetic bacteria

AU - Mimuro, Mamoru

AU - Nozawa, Tsunenori

AU - Tamai, Naoto

AU - Shimada, Keizou

AU - Yamazaki, Iwao

AU - Lin, Su

AU - Knox, Robert S.

AU - Wittmershaus, Bruce P.

AU - Brune, Daniel C.

AU - Blankenship, Robert E.

PY - 1989

Y1 - 1989

N2 - Energy flow in whole cells of the thermophilic green photosynthetic bacterium Chloroflexus aurantiacus was studied by measurements of time-resolved fluorescence spectra in the picosecond time range, detected by both streak camera and single-photon counting methods. These data characterize the energy-transfer sequence from bacteriochlorophyll c (BChl c), found in membrane-associated antenna structures called chlorosomes, to BChl a in the chlorosome baseplate, then to a BChl a antenna complex in the cytoplasmic membrane, and finally to the photochemical reaction center. Upon selective excitation of BChl c in chlorosomes, the decay time of the emission arising from BChl c was 16 ps. The apparent rise time of the emission from the baseplate pigment was <3 ps.

AB - Energy flow in whole cells of the thermophilic green photosynthetic bacterium Chloroflexus aurantiacus was studied by measurements of time-resolved fluorescence spectra in the picosecond time range, detected by both streak camera and single-photon counting methods. These data characterize the energy-transfer sequence from bacteriochlorophyll c (BChl c), found in membrane-associated antenna structures called chlorosomes, to BChl a in the chlorosome baseplate, then to a BChl a antenna complex in the cytoplasmic membrane, and finally to the photochemical reaction center. Upon selective excitation of BChl c in chlorosomes, the decay time of the emission arising from BChl c was 16 ps. The apparent rise time of the emission from the baseplate pigment was <3 ps.

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EP - 7509

JO - Journal of physical chemistry

JF - Journal of physical chemistry

IS - 21

ER -

Excitation energy flow in chlorosome antennas of green photosynthetic bacteria

Abstract

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