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In Vitro Reconstitution of Light-harvesting Complexes of Plants and Green Algae
Published on: October 10, 2014
Crystallisation, structure and function of plant light-harvesting Complex II
Tiago Barros1, Werner Kühlbrandt
1Max Plank Institute of Biophysics, Department of Structural Biology, Max-von-Laue-Str. 3, D-60438 Frankfurt am Main, Germany.
Biochimica Et Biophysica Acta
|March 31, 2009
Summary
The chlorophyll a/b light-harvesting complex (LHC-II) captures solar energy for photosynthesis. This review details structural breakthroughs, revealing conserved features across LHC family proteins and energy dissipation mechanisms.
Area of Science:
- Biochemistry
- Plant Biology
- Structural Biology
Background:
- The chlorophyll a/b light-harvesting complex of photosystem II (LHC-II) is crucial for capturing solar energy in plants.
- LHC-II is vital for photosynthesis, thylakoid membrane organization, and energy regulation.
Purpose of the Study:
- To review developments leading to high-resolution LHC-II structures.
- To propose conserved structural features of the LHC family based on polypeptide alignment.
- To examine energy-dependent non-photochemical quenching (NPQ) mechanisms structurally.
Main Methods:
- Review of structural biology research over two decades.
- Sequence alignment of conserved LHC polypeptides.
- Structural analysis of LHC-II and related complexes.
Main Results:
- High-resolution structures of LHC-II have been determined.
- Key conserved structural features of LHC-II are proposed for the entire LHC family.
- Structural insights into NPQ mechanisms are presented.
Conclusions:
- Structural advancements have significantly improved understanding of LHC-II functions.
- Conserved structural features are likely shared across the LHC protein family.
- Structural perspective aids in understanding energy dissipation and light stress regulation in photosynthesis.
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