Photochemistry beyond the red limit in chlorophyll f-containing photosystems

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Title: Photochemistry beyond the red limit in chlorophyll f-containing photosystems
Author(s): Nuernberg, DJ
Morton, J
Santabarbara, S
Telfer, A
Joliot, P
Antonaru, LA
Ruban, AV
Cardona, T
Krausz, E
Boussac, A
Fantuzzi, A
Rutherford, AW
Item Type: Journal Article
Abstract: Photosystems I and II convert solar energy into the chemical energy that powers life. Chlorophyll a photochemistry, using red light (680 to 700 nm), is near universal and is considered to define the energy “red limit” of oxygenic photosynthesis. We present biophysical studies on the photosystems from a cyanobacterium grown in far-red light (750 nm). The few long-wavelength chlorophylls present are well resolved from each other and from the majority pigment, chlorophyll a. Charge separation in photosystem I and II uses chlorophyll f at 745 nm and chlorophyll f (or d) at 727 nm, respectively. Each photosystem has a few even longer-wavelength chlorophylls f that collect light and pass excitation energy uphill to the photochemically active pigments. These photosystems function beyond the red limit using far-red pigments in only a few key positions.
Publication Date: 15-Jun-2018
Date of Acceptance: 18-Apr-2018
URI: http://hdl.handle.net/10044/1/63104
DOI: https://dx.doi.org/10.1126/science.aar8313
ISSN: 0036-8075
Publisher: American Association for the Advancement of Science
Start Page: 1210
End Page: 1213
Journal / Book Title: Science
Volume: 360
Issue: 6394
Copyright Statement: © 2018 The Author(s). This is the author’s version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on Volume 360, 15 June 2018 DOI: https://dx.doi.org/10.1126/science.aar8313
Keywords: Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
PRIMARY ELECTRON-ACCEPTOR
ACARYOCHLORIS-MARINA
RESOLUTION
LIGHT
PHOTOSYNTHESIS
OXIDATION
ANGSTROM
AMBIENT
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
PRIMARY ELECTRON-ACCEPTOR
ACARYOCHLORIS-MARINA
RESOLUTION
LIGHT
PHOTOSYNTHESIS
OXIDATION
ANGSTROM
AMBIENT
MD Multidisciplinary
General Science & Technology
Publication Status: Published
Online Publication Date: 2018-06-15
Appears in Collections:Faculty of Natural Sciences



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