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Literature summary extracted from

  • Kopecna, J.; Sobotka, R.; Komenda, J.
    Inhibition of chlorophyll biosynthesis at the protochlorophyllide reduction step results in the parallel depletion of photosystem I and photosystem II in the cyanobacterium Synechocystis PCC 6803 (2013), Planta, 237, 497-508.
    View publication on PubMed

Protein Variants

EC Number Protein Variants Comment Organism
1.3.7.7 additional information construction of a DELTAchlL strain Synechocystis sp.

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining

Metals/Ions

EC Number Metals/Ions Comment Organism Structure
1.3.7.7 Mg2+ required Synechocystis sp.

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.3.1.33 protochlorophyllide + NADPH + H+ Synechocystis sp. PCC 6803
-
 chlorophyllide a + NADP+
-
 ?
1.3.7.7 protochlorophyllide a + reduced ferredoxin + 2 ATP + 2 H2O Synechocystis sp.
-
 chlorophyllide a + oxidized ferredoxin + 2 ADP + 2 phosphate
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.3.1.33 Synechocystis sp. PCC 6803
-
-
-
1.3.7.7 Synechocystis sp.
-
-
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.3.1.33 protochlorophyllide + NADPH + H+
-
 Synechocystis sp. PCC 6803 chlorophyllide a + NADP+
-
 ?
1.3.7.7 protochlorophyllide a + reduced ferredoxin + 2 ATP + 2 H2O
-
 Synechocystis sp. chlorophyllide a + oxidized ferredoxin + 2 ADP + 2 phosphate
-
 ?

Synonyms

EC Number Synonyms Comment Organism
1.3.1.33 light-dependent NADPH:Pchlide oxidoreductase
-
 Synechocystis sp. PCC 6803
1.3.1.33 light-dependent NADPH:protochlorophyllide oxidoreductase
-
 Synechocystis sp. PCC 6803
1.3.1.33 LPOR
-
 Synechocystis sp. PCC 6803
1.3.7.7 dark-operative protochlorophyllide oxidoreductase
-
 Synechocystis sp.
1.3.7.7 DPOR
-
 Synechocystis sp.

Cofactor

EC Number Cofactor Comment Organism Structure
1.3.1.33 NADPH
-
 Synechocystis sp. PCC 6803
1.3.7.7 ATP
-
 Synechocystis sp.
1.3.7.7 Ferredoxin
-
 Synechocystis sp.

General Information

EC Number General Information Comment Organism
1.3.1.33 malfunction an enzyme-less mutant grows photoautotrophically in moderate light and contains a maximum of 20% of the wild type chlorophyll level Synechocystis sp. PCC 6803
1.3.7.7 malfunction a strain lacking DPOR contains about 25% of the wild-type level of photosystems PSII and PSI when cultivated under light-activated heterotrophic growth conditions. Deletion of the chlL gene abolishes activity of the DPOR enzyme. Absence of the chlL gene causes a further 20% decrease in Chl content and therefore the resulting (pCER:por)/Dpor/DchlL strain termed SynPORreg reaches only 60-70% of Chl content present in wild-type Synechocystis sp.
1.3.7.7 metabolism two independent enzymes catalyze the reduction of protochlorophyllide to chlorophyllide, which is the penultimate step in chlorophyll biosynthesis. One is light-dependent NADPH:protochlorophyllide oxidoreductase and the second type is dark-operative protochlorophyllide oxidoreductase Synechocystis sp.