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Literature summary extracted from

  • Terry, M.J.; Lagarias, J.C.
    Holophytochrome assembly. Coupled assay for phytochromobilin synthase in organello (1991), J. Biol. Chem., 266, 22215-22221.
    View publication on PubMed

Activating Compound

EC Number Activating Compound Comment Organism Structure
1.3.7.4 ATP stimulates at 1 mM Cucumis sativus
1.3.7.4 additional information NADPH regenerating system with glucose-6-phosphate and glucose-6-phosphate dehydrogenase stimulates Cucumis sativus
1.3.7.4 NADH stimulates slightly at 1 mM Cucumis sativus
1.3.7.4 NADPH stimulates slightly at 1 mM Cucumis sativus

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.3.7.4 plastid etiolated Cucumis sativus 9536
-

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.3.7.4 (3Z)-phytochromobilin + oxidized ferredoxin Cucumis sativus
-
biliverdin IXa + reduced ferredoxin
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.3.7.4 Cucumis sativus
-
cucumber
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.3.7.4 seedling
-
Cucumis sativus
-

Specific Activity [micromol/min/mg]

EC Number Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
1.3.7.4 0.0000004
-
in etiolated plastids Cucumis sativus
1.3.7.4 0.0000011
-
specific activity of plastid protein Cucumis sativus

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.3.7.4 (3Z)-phytochromobilin + oxidized ferredoxin
-
Cucumis sativus biliverdin IXa + reduced ferredoxin
-
?