Photosystem I Protein Complex

**Definition:** A large multisubunit protein complex that is found in the THYLAKOID MEMBRANE. It uses light energy derived from LIGHT-HARVESTING PROTEIN COMPLEXES to drive electron transfer reactions that result in either the reduction of NADP to NADPH or the transport of PROTONS across the membrane.

**Tree numbers:** - D05.500.562.488.500 - D08.811.600.710.500 - D12.776.157.530.450.250.875.492 - D12.776.543.585.450.250.875.492 - D12.776.543.930.500.500 - D12.776.765.199.750.750.500

**Synonyms:** - Photosystem I Reaction Center