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J.F. ALLEN, K. ALEXCIEV AND G. HAKANSSON Regulation by redox signalling
 

Summary: J.F. ALLEN, K. ALEXCIEV AND G. HAKANSSON
Regulation by redox signalling
Photosynthesis islight-driven redox chemistry. Molecular redox signalling,
the coupling of gene expression to electron transfer, isnow implicated in
the adaptation of photosynthesis to variation in light quality and quantity.
Photosynthesis is the conversion of light energy into
chemical energy. The primary event is light-driven elec-
tron transfer - a redox reaction - and it sets in motion
a chain of electron transfers upon which all life ultimately
depends. The last decade has seen huge strides forward
in understanding the hardware of photosynthesis. The
structure of a reaction centre, where the primary redox
reaction occurs, has been solved [1]. There are now also
structures available for light-harvesting proteins of plant
chloroplasts [2] and purple bacteria [3], which capture
photons and feed the light energy to the photosynthetic
reaction centres. A structural description of a complete
photosynthetic unit is, it seems, on the horizon.
Crystallography yields still photographs, whereas life is,
almost by definition, dynamically responsive to environ-

  

Source: Allen, John F. - School of Biological and Chemical Sciences, Queen Mary, University of London

 

Collections: Renewable Energy; Biology and Medicine