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Literature summary extracted from

  • Mignee, C.; Mutoh, R.; Krieger-Liszkay, A.; Kurisu, G.; Setif, P.
    Gallium ferredoxin as a tool to study the effects of ferredoxin binding to photosystem I without ferredoxin reduction (2017), Photosynth. Res., 134, 251-263 .
    View publication on PubMed

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.97.1.12 gallium ferredoxin binding of the redox-inactive gallium ferredoxin to PSI inhibits the electron transport reaction, binds to PSI competitively with ferredoxin suggesting a single ferredoxin?binding site in PSI, kinetics Synechocystis sp. PCC 6803
1.97.1.12 gallium ferredoxin binding of the redox-inactive gallium ferredoxin to PSI inhibits the electron transport reaction, binds to PSI competitively with ferredoxin suggesting a single ferredoxin?binding site in PSI, kinetics Thermosynechococcus vestitus

KM Value [mM]

EC Number KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
1.97.1.12 additional information
-
 additional information thermodynamics and kinetics Thermosynechococcus vestitus
1.97.1.12 additional information
-
 additional information thermodynamics and kinetics Synechocystis sp. PCC 6803

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv Thermosynechococcus vestitus
-
 oxidized plastocyanin + reduced ferredoxin
-
 ?
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv Synechocystis sp. PCC 6803
-
 oxidized plastocyanin + reduced ferredoxin
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.97.1.12 Synechocystis sp. PCC 6803 P29254 AND P29255 AND P32422 psaA, psaB, and psaC
-
1.97.1.12 Thermosynechococcus vestitus
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.97.1.12 additional information reduction of ferredoxin by photosystem I (PSI) involves the [4Fe-4S] clusters FA and FB harbored by subunit PsaC, with FB being the direct electron transfer partner of ferredoxin. Assay in presence of 5 mM MgCl2, 30 mM NaCl and 0.03% beta-dodecyl-maltoside, with 1-2.5 mM sodium ascorbate and 0.008-0.025 mM 2,6-dichlorophenolindophenol Thermosynechococcus vestitus ?
-
 ?
1.97.1.12 additional information reduction of ferredoxin by photosystem I (PSI) involves the [4Fe-4S] clusters FA and FB harbored by subunit PsaC, with FB being the direct electron transfer partner of ferredoxin. Assay in presence of 5 mM MgCl2, 30 mM NaCl and 0.03% beta-dodecyl-maltoside, with 1-2.5 mM sodium ascorbate and 0.008-0.025 mM 2,6-dichlorophenolindophenol Synechocystis sp. PCC 6803 ?
-
 ?
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv
-
 Thermosynechococcus vestitus oxidized plastocyanin + reduced ferredoxin
-
 ?
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv
-
 Synechocystis sp. PCC 6803 oxidized plastocyanin + reduced ferredoxin
-
 ?
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv ferredoxin from Thermosynechococcus elongatus Thermosynechococcus vestitus oxidized plastocyanin + reduced ferredoxin
-
 ?
1.97.1.12 reduced plastocyanin + oxidized ferredoxin + hv ferredoxin from Thermosynechococcus elongatus Synechocystis sp. PCC 6803 oxidized plastocyanin + reduced ferredoxin
-
 ?

Subunits

EC Number Subunits Comment Organism
1.97.1.12 trimer
-
 Thermosynechococcus vestitus
1.97.1.12 trimer
-
 Synechocystis sp. PCC 6803

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.97.1.12 8
-
 assay at Thermosynechococcus vestitus
1.97.1.12 8
-
 assay at Synechocystis sp. PCC 6803

Cofactor

EC Number Cofactor Comment Organism Structure
1.97.1.12 [4Fe-4S]-center reduction of ferredoxin by photosystem I (PSI) involves the [4Fe-4S] clusters FA and FB harbored by subunit PsaC, with FB being the direct electron transfer partner of ferredoxin Thermosynechococcus vestitus
1.97.1.12 [4Fe-4S]-center reduction of ferredoxin by photosystem I (PSI) involves the [4Fe-4S] clusters FA and FB harbored by subunit PsaC, with FB being the direct electron transfer partner of ferredoxin Synechocystis sp. PCC 6803

General Information

EC Number General Information Comment Organism
1.97.1.12 additional information PS I binding analysis using redox-inactive gallium ferredoxin, overview. Gallium ferredoxin binds to PSI competitively with ferredoxin suggesting a single ferredoxin-binding site in PSI, kinetics Synechocystis sp. PCC 6803
1.97.1.12 additional information PS I binding analysis using redox-inactive gallium ferredoxin, overview. Gallium ferredoxin binds to PSI competitively with ferredoxin suggesting a single ferredoxin?binding site in PSI, kinetics Thermosynechococcus vestitus