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- Q6545940 subject Q6939040.
- Q6545940 subject Q7157153.
- Q6545940 subject Q8791160.
- Q6545940 subject Q8802898.
- Q6545940 subject Q9089708.
- Q6545940 abstract "The light-harvesting complex (or antenna complex) is an array of protein and chlorophyll molecules embedded in the thylakoid membrane of plants, which transfer light energy to one chlorophyll a molecule at the reaction center of a photosystem.The antenna pigments are predominantly chlorophyll b, xanthophylls, and carotenoids. Chlorophyll a is known as the core pigment. Their absorption spectra are non-overlapping in order to broaden the range of light that can be absorbed in photosynthesis. The carotenoids have another role as an antioxidant to prevent photo-oxidative damage of chlorophyll molecules. Each antenna complex has between 250 and 400 pigment molecules and the energy they absorb is shuttled by resonance energy transfer to a specialized chlorophyll-protein complex known as the reaction center of each photosystem. The reaction center initiates a complex series of chemical reactions that capture energy in the form of chemical bonds.For photosystem II, when either of the two chlorophyll a molecules at the reaction center absorb energy, an electron is excited and transferred to an electron acceptor molecule, pheophytin, leaving the chlorophyll a in an oxidized state. The oxidised chlorophyll a replaces the electrons by photolysis that involves the reduction of water molecules to oxygen, protons and electrons.Under changing light conditions, the reversible phosphorylation of light harvesting chlorophyll a/b binding proteins (LHCII) represents a system for balancing the excitation energy between the two photosystems.The N-terminus of the chlorophyll A-B binding protein extends into the stroma where it is involved with adhesion of granal membranes and photo-regulated by reversible phosphorylation of its threonine residues. Both these processes are believed to mediate the distribution of excitation energy between photosystems I and II.This family also includes the photosystem II protein PsbS, which plays a role in energy-dependent quenching that increases thermal dissipation of excess absorbed light energy in the photosystem.".
- Q6545940 symbol "Chloroa_b-bind".
- Q6545940 thumbnail 2bhw.png?width=300.
- Q6545940 wikiPageWikiLink Q115237.
- Q6545940 wikiPageWikiLink Q1231592.
- Q6545940 wikiPageWikiLink Q133878.
- Q6545940 wikiPageWikiLink Q16814.
- Q6545940 wikiPageWikiLink Q191907.
- Q6545940 wikiPageWikiLink Q1943387.
- Q6545940 wikiPageWikiLink Q216208.
- Q6545940 wikiPageWikiLink Q2177977.
- Q6545940 wikiPageWikiLink Q2225.
- Q6545940 wikiPageWikiLink Q2294.
- Q6545940 wikiPageWikiLink Q337889.
- Q6545940 wikiPageWikiLink Q355270.
- Q6545940 wikiPageWikiLink Q367473.
- Q6545940 wikiPageWikiLink Q418676.
- Q6545940 wikiPageWikiLink Q424359.
- Q6545940 wikiPageWikiLink Q43177.
- Q6545940 wikiPageWikiLink Q629.
- Q6545940 wikiPageWikiLink Q6939040.
- Q6545940 wikiPageWikiLink Q7157153.
- Q6545940 wikiPageWikiLink Q8054.
- Q6545940 wikiPageWikiLink Q82682.
- Q6545940 wikiPageWikiLink Q8791160.
- Q6545940 wikiPageWikiLink Q8802898.
- Q6545940 wikiPageWikiLink Q9089708.
- Q6545940 symbol "Chloroa_b-bind".
- Q6545940 type Biomolecule.
- Q6545940 type Protein.
- Q6545940 type Thing.
- Q6545940 type Q206229.
- Q6545940 type Q8054.
- Q6545940 comment "The light-harvesting complex (or antenna complex) is an array of protein and chlorophyll molecules embedded in the thylakoid membrane of plants, which transfer light energy to one chlorophyll a molecule at the reaction center of a photosystem.The antenna pigments are predominantly chlorophyll b, xanthophylls, and carotenoids. Chlorophyll a is known as the core pigment. Their absorption spectra are non-overlapping in order to broaden the range of light that can be absorbed in photosynthesis.".
- Q6545940 label "Light-harvesting complexes of green plants".
- Q6545940 depiction 2bhw.png.