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Nicotinamide adenine dinucleotide phosphate
NADPH is the reduced form of NADP+, and NADP+ is the oxidized form of NADPH.
In chloroplasts, NADP is reduced by ferredoxin-NADP+ reductase in last step of the electron chain of the light reactions of photosynthesis. The NADPH produced is then used as reducing power for the biosynthetic reactions in the Calvin cycle of photosynthesis.
NADP ions in photosynthesis may be seen as 'dragging' hydrogen ions along with them (in the light-dependent cycles), which are used by the light-independent (Calvin) cycles to produce carbohydrates.
The oxidative phase of the pentose phosphate pathway is the major source of NADPH in cells.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Nicotinamide_adenine_dinucleotide_phosphate". A list of authors is available in Wikipedia.|