|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
EC Number: 18.104.22.168
Enzymes and Genes:
|Glycine max :||fatty acid peroxygenase (fatty acid hydroperoxide-dependent)
In Pathway: cutin biosynthesis
Note that this reaction equation differs from the official Enzyme Commission reaction equation for this EC number, which can be found here .
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
Mass balance status: Balanced.
Enzyme Commission Primary Name: plant seed peroxygenase
Enzyme Commission Synonyms: plant peroxygenase, soybean peroxygenase
Standard Gibbs Free Energy (ΔrG'° in kcal/mol): -14.92 [Latendresse13]
Enzyme Commission Summary:
A heme protein with calcium binding motif (caleosin-type). Enzymes of this type include membrane-bound proteins found in seeds of different plants. They catalyse the direct transfer of one oxygen atom from an organic hydroperoxide, which is reduced into its corresponding alcohol to a substrate which will be oxidized.
A clearer way to express this reaction equation may be: R1H + R2OOH = R1OH + R2OH
Reactions catalysed include hydroxylation, epoxidation and sulfoxidation. Preferred substrate and co-substrate are unsaturated fatty acids and fatty acid hydroperoxides, respectively. Plant seed peroxygenase is involved in the synthesis of cutin.
Hamberg96: Hamberg M, Hamberg G (1996). "Peroxygenase-Catalyzed Fatty Acid Epoxidation in Cereal Seeds (Sequential Oxidation of Linoleic Acid into 9(S),12(S),13(S)-Trihydroxy-10(E)-Octadecenoic Acid)." Plant Physiol 110(3);807-815. PMID: 12226220
Hanano06: Hanano A, Burcklen M, Flenet M, Ivancich A, Louwagie M, Garin J, Blee E (2006). "Plant seed peroxygenase is an original heme-oxygenase with an EF-hand calcium binding motif." J Biol Chem 281(44);33140-51. PMID: 16956885
Partridge09a: Partridge M, Murphy DJ (2009). "Roles of a membrane-bound caleosin and putative peroxygenase in biotic and abiotic stress responses in Arabidopsis." Plant Physiol Biochem 47(9);796-806. PMID: 19467604
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