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Literature summary extracted from

  • Kahn, R.A.; Bak, S.; Olsen, C.E.; Svendsen, I.; Moller, B.L.
    Isolation and reconstitution of the heme-thiolate protein obtusifoliol 14alpha-demethylase from Sorghum bicolor (L.) Moench (1996), J. Biol. Chem., 271, 32944-32950.
    View publication on PubMed

Application

EC Number Application Comment Organism
1.14.14.154 agriculture target enzyme for azole antifungal agents. These specific inhibitors are of great importance as plant growth regulators, fungicides and herbicides in the agricultural and medical fields Sorghum bicolor
1.14.14.154 agriculture all known functional sterols lack a 14alpha-methyl group, and therefore the 14alpha-demethylation reaction has received much attention from the pharmaceutical and agriculture-chemical industry as a possible means to specifically control and inhibit sterol biosynthesis in mammals, fungi, and plant Sorghum bicolor
1.14.14.154 medicine target enzyme for azole antifungal agents. These specific inhibitors are of great importance as plant growth regulators, fungicides and herbicides in the agricultural and medical fields Sorghum bicolor
1.14.14.154 pharmacology target enzyme for azole antifungal agents. These specific inhibitors are of great importance as plant growth regulators, fungicides and herbicides in the agricultural and medical fields Sorghum bicolor
1.14.14.154 pharmacology all known functional sterols lack a 14alpha-methyl group, and therefore the 14alpha-demethylation reaction has received much attention from the pharmaceutical and agriculture-chemical industry as a possible means to specifically control and inhibit sterol biosynthesis in mammals, fungi, and plant Sorghum bicolor
1.14.14.154 pharmacology target enzyme for the design of phyla-specific sterol 14alpha-demethylase inhibitors Sorghum bicolor

Inhibitors

EC Number Inhibitors Comment Organism Structure
1.14.14.154 CO
-
Sorghum bicolor

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.14.14.154 membrane
-
Sorghum bicolor 16020
-
1.14.14.154 microsome
-
Embryophyta
-
-
1.14.14.154 microsome
-
Sorghum bicolor
-
-

Molecular Weight [Da]

EC Number Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
1.14.14.154 53000
-
SDS-PAGE and amino acid sequence analysis Sorghum bicolor

Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.14.14.154 additional information Embryophyta
-
?
-
?
1.14.14.154 additional information Sorghum bicolor biosynthetic enzyme with very narrow substrate specificity ?
-
?
1.14.14.154 additional information Sorghum bicolor enzyme is a multifunctional cytochrome P450, which as the same active site catalyze demethylation in three consecutive NADPH- and O2-dependent hydroxylation reactions, resulting in the elimination of the methyl group as formic acid and the introduction of a double bond at the DELTA14 position ?
-
?
1.14.14.154 additional information Sorghum bicolor key enzyme in plant sterol, phytosterol, biosynthesis ?
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 Embryophyta 4alpha,14alpha-dimethyl-24-methylene-5alpha-cholesta-8-en-3beta-ol 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 Sorghum bicolor 4alpha,14alpha-dimethyl-24-methylene-5alpha-cholesta-8-en-3beta-ol 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 Embryophyta 4alpha,14alpha-dimethyl-5alpha-ergosta-8,24(28)-dien-3beta-ol 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 Sorghum bicolor 4alpha,14alpha-dimethyl-5alpha-ergosta-8,24(28)-dien-3beta-ol 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?

Organism

EC Number Organism UniProt Comment Textmining
1.14.14.154 Embryophyta
-
higher plants
-
1.14.14.154 Sorghum bicolor
-
L., Moench
-

Purification (Commentary)

EC Number Purification (Comment) Organism
1.14.14.154 purification and reconstitution Sorghum bicolor

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.14.14.154 seedling etiolated Sorghum seedlings Sorghum bicolor
-

Storage Stability

EC Number Storage Stability Organism
1.14.14.154 -80°C, frozen in liquid nitrogen Sorghum bicolor

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.14.14.154 additional information
-
Embryophyta ?
-
?
1.14.14.154 additional information substrate specificity Embryophyta ?
-
?
1.14.14.154 additional information substrate specificity Sorghum bicolor ?
-
?
1.14.14.154 additional information substrate binding spectra Sorghum bicolor ?
-
?
1.14.14.154 additional information biosynthetic enzyme with very narrow substrate specificity Sorghum bicolor ?
-
?
1.14.14.154 additional information no activity with lanosterol, campesterol, sitosterol, or stigmasterol Sorghum bicolor ?
-
?
1.14.14.154 additional information enzyme is a multifunctional cytochrome P450, which as the same active site catalyze demethylation in three consecutive NADPH- and O2-dependent hydroxylation reactions, resulting in the elimination of the methyl group as formic acid and the introduction of a double bond at the DELTA14 position Sorghum bicolor ?
-
?
1.14.14.154 additional information substrate for 14alpha-demethylation reaction in plants is different from that in animals and fungi Embryophyta ?
-
?
1.14.14.154 additional information substrate for 14alpha-demethylation reaction in plants is different from that in animals and fungi Sorghum bicolor ?
-
?
1.14.14.154 additional information plant sterol 14alpha-demethylase have high substrate specificity Sorghum bicolor ?
-
?
1.14.14.154 additional information key enzyme in plant sterol, phytosterol, biosynthesis Sorghum bicolor ?
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 4alpha,14alpha-dimethyl-24-methylene-5alpha-cholesta-8-en-3beta-ol Embryophyta 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 4alpha,14alpha-dimethyl-24-methylene-5alpha-cholesta-8-en-3beta-ol Sorghum bicolor 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 catalyzes 14alpha-demethylation of obtusifoliol Embryophyta 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 catalyzes 14alpha-demethylation of obtusifoliol Sorghum bicolor 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 4alpha,14alpha-dimethyl-5alpha-ergosta-8,24(28)-dien-3beta-ol Embryophyta 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?
1.14.14.154 obtusifoliol + [reduced NADPH-hemoprotein reductase] + O2 4alpha,14alpha-dimethyl-5alpha-ergosta-8,24(28)-dien-3beta-ol Sorghum bicolor 4alpha-methyl-5alpha-ergosta-8,14,24(28)-trien-3beta-ol + formate + [oxidized NADPH-hemoprotein reductase] + H2O
-
?

Subunits

EC Number Subunits Comment Organism
1.14.14.154 monomer 1 * 53000, SDS-PAGE Sorghum bicolor

Cofactor

EC Number Cofactor Comment Organism Structure
1.14.14.154 cytochrome P450
-
Embryophyta
1.14.14.154 cytochrome P450
-
Sorghum bicolor
1.14.14.154 heme heme-thiolate enzyme Embryophyta
1.14.14.154 heme heme-thiolate enzyme Sorghum bicolor