ExplorEnz: EC 1.97.1.12

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1.97.1.12

Accepted name:

photosystem I

Reaction:

reduced plastocyanin + oxidized ferredoxin + hν = oxidized plastocyanin + reduced ferredoxin

Systematic name:

plastocyanin:ferredoxin oxidoreductase (light-dependent)

Comments:

Contains chlorophyll, phylloquinones, carotenoids and [4Fe-4S] clusters. Cytochrome c₆ can act as an alternative electron donor, and flavodoxin as an alternative acceptor in some species.

Links to other databases:

BRENDA, EXPASY, KEGG, MetaCyc, PDB

References:

1.	Takabe, T., Iwasaki, Y., Hibino, T. and Ando, T. Subunit composition of photosystem I complex that catalyzes light-dependent transfer of electrons from plastocyanin to ferredoxin. J. Biochem. 110 (1991) 622–627. [PMID: 1778985]
2.	van Thor, J.J., Geerlings, T.H., Matthijs, H.C. and Hellingwerf, K.J. Kinetic evidence for the PsaE-dependent transient ternary complex photosystem I/Ferredoxin/Ferredoxin:NADP⁺ reductase in a cyanobacterium. Biochemistry 38 (1999) 12735–12746. [DOI] [PMID: 10504244]
3.	Chitnis, P.R. Photosystem I: function and physiology. Annu. Rev. Plant Physiol. Plant Mol. Biol. 52 (2001) 593–626. [DOI] [PMID: 11337410]
4.	Amunts, A., Toporik, H., Borovikova, A. and Nelson, N. Structure determination and improved model of plant photosystem I. J. Biol. Chem. 285 (2010) 3478–3486. [DOI] [PMID: 19923216]

[EC 1.97.1.12 created 2011]