Photosynthetic Light-Harvesting (Antenna) Complexes—Structures and Functions

Chlorophylls and bacteriochlorophylls, together with carotenoids, serve, noncovalently bound to specific apoproteins, as principal light-harvesting and energy-transforming pigments in photosynthetic organisms. In recent years, enormous progress has been achieved in the elucidation of structures and...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2021-06, Vol.26 (11), p.3378
Main Authors: Lokstein, Heiko, Renger, Gernot, Götze, Jan
Format: Article
Language:English
Subjects:
Absorption cross sections
Algae
Antennas
bacteriochlorophylls
Carotenoids
Chlorophyll
chlorophylls
Cyanobacteria
Energy
Energy harvesting
excitation energy transfer
light-harvesting complexes
Photosynthesis
Photosynthetic apparatus
Pigments
Proteins
Reaction centers
Review
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Summary:Chlorophylls and bacteriochlorophylls, together with carotenoids, serve, noncovalently bound to specific apoproteins, as principal light-harvesting and energy-transforming pigments in photosynthetic organisms. In recent years, enormous progress has been achieved in the elucidation of structures and functions of light-harvesting (antenna) complexes, photosynthetic reaction centers and even entire photosystems. It is becoming increasingly clear that light-harvesting complexes not only serve to enlarge the absorption cross sections of the respective reaction centers but are vitally important in short- and long-term adaptation of the photosynthetic apparatus and regulation of the energy-transforming processes in response to external and internal conditions. Thus, the wide variety of structural diversity in photosynthetic antenna “designs” becomes conceivable. It is, however, common for LHCs to form trimeric (or multiples thereof) structures. We propose a simple, tentative explanation of the trimer issue, based on the 2D world created by photosynthetic membrane systems.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules26113378