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Additional
light-harvesting complex
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Light-harvesting complex
A
light-harvesting complex
is a complex of
subunit proteins
that may be part of a larger supercomplex of a
photosystem
, the functional unit in
photosynthesis
. It is used by
plants
and
photosynthetic bacteria
to collect more of the incoming light than would be captured by the
photosynthetic reaction center
alone. Light-harvesting complexes are found in a wide variety among the different photosynthetic species. The complexes consist of proteins and
photosynthetic pigments
and surround a
photosynthetic reaction center
to focus energy, attained from photons absorbed by the
pigment
, toward the reaction center using
Förster resonance energy transfer
.
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