Photosystem I PsaA (IPR006243)

Short name: PSI_PsaA

Overlapping homologous superfamilies

Family relationships


Photosystem I is a membrane complex found in the chloroplasts of plants and cyanobacteria. It uses light energy to transfer electrons from plastocyanin to ferredoxin [PMID: 3333014]. The core proteins of photosystem I are PsaA and PsaB, homologous integral membrane proteins that form a heterodimer that binds the electron-donating chlorophyll dimer P700, as well as chlorophyll, phylloquinone, and 4FE-4S electron acceptors [PMID: 3333014].

This entry represents PsaA.

GO terms

Biological Process

GO:0015979 photosynthesis

Molecular Function

GO:0046872 metal ion binding

Cellular Component

GO:0016021 integral component of membrane
GO:0009522 photosystem I

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.