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SlideshowReport

Chlorophyll Molecules

Description
Most chlorophyll molecules are used as antennae to catch photons and pass their energy on to reaction centers.

Three-dimensional structure of the trimeric light-harvesting complex II of plants.

The X-ray structure of the pea LHCII shows that the protein exists as a homotrimer buried in the thylakoid membrane.

Each trimer contains 24 chlorophyll a molecules, 18 chlorophyll b molecules, and 12 carotenoids (luteins and xanthophylls), all serving as antenna molecules.
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