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Molecular complex

Photosystem I

Photosystem I

A thylakoid protein–pigment complex that re-energizes electrons for reduction of NADP⁺ to NADPH.

Overview

EXPLORE BY LEVEL

Photosystem I gives electrons another boost from light. The energized electrons can help make for the .

Quick Facts

AT A GLANCE
TopicPhotosynthesis & Carbon Cycle

Follow the Connections

See how Photosystem I links to other biological records.

Open network
ProcessLight-dependent ReactionsusesMoleculeChlorophyllcontains pigmentMolecular complexPhotosystem IItransfers electrons toCell componentThylakoidlocated in
All 4 Structured Connections
Light-dependent Reactions · ProcessUSES →Photosystem I · Molecular complex
Photosystem I · Molecular complexCONTAINS PIGMENT →Chlorophyll · Molecule
Photosystem II · Molecular complexTRANSFERS ELECTRONS TO →Photosystem I · Molecular complex
Photosystem I · Molecular complexLOCATED IN →Thylakoid · Cell component

Recommended Reading

Trusted references for learning more about Photosystem I.

textbookThe Light-Dependent Reactions of PhotosynthesisOpenStax Biology 2e
Research Claims

PSI reaction-center charge separation and downstream electron acceptors support linear or cyclic electron flow, depending on physiological and environmental conditions.