| IED ID | IndEnz0018001603 |
| Enzyme Type ID | peroxidase001603 |
| Protein Name |
Psi-producing oxygenase A Fatty acid oxygenase ppoA Includes: Linoleate 8R-lipoxygenase EC 1.13.11.60 ; 9,12-octadecadienoate 8-hydroperoxide 8R-isomerase EC 5.4.4.5 |
| Gene Name | ppoA |
| Organism | Emericella nidulans (Aspergillus nidulans) |
| Taxonomic Lineage | cellular organisms Eukaryota Opisthokonta Fungi Dikarya Ascomycota saccharomyceta Pezizomycotina leotiomyceta Eurotiomycetes Eurotiomycetidae Eurotiales (green and blue molds) Aspergillaceae Aspergillus Aspergillus subgen. Nidulantes Emericella nidulans (Aspergillus nidulans) |
| Enzyme Sequence | MGEDKETNILAGLGNTISQVENVVAASLRPLPTATGDGTYVAESTQTGLAKDLSHVDLKDVRTLAEVVKSAATGEPVDDKQYIMERVIQLAAGLPSTSRNAAELTKSFLNMLWNDLEHPPVSYLGADSMHRKADGSGNNRFWPQLGAAGSAYARSVRPKTMQSPSLPDPETIFDCLLRRKEYREHPNKISSVLFYLASIIIHDLFQTDPKDNSVSKTSSYLDLSPLYGNNQDEQNLVRTFKDGKLKPDCFATKRVLGFPPGVGVLLIMFNRFHNYVVDQLAAINECGRFTKPDESNVDEYAKYDNNLFQTGRLVTCGLYANIILKDYVRTILNINRTDSTWSLDPRMEMKDGLLGEAAAMATGNQVSAEFNVVYRWHACISKRDEKWTEDFHREIMPGVDPSTLSMQDFVAGLGRWQAGLPQEPLERPFSGLQRKPDGAFNDDDLVNLFEKSVEDCAGAFGASHVPAIFKSVEALGIMQARRWNLGTLNEFRQYFNLAPHKTFEDINSDPYIADQLKRLYDHPDLVEIYPGVVVEEAKDSMVPGSGLCTNFTISRAILSDAVALVRGDRFYTVDYTPKHLTNWAYNEIQPNNAVDQGQVFYKLVLRAFPNHFDGNSIYAHFPLVVPSENEKILKSLGVAEKYSWEKPSRISHPIFISSHAACMSILENQETFKVTWGRKIEFLMQRDKHQYGKDFMLSGDRPPNAASRKMMGSALYRDEWEAEVKNFYEQTTLKLLHKNSYKLAGVNQVDIVRDVANLAQVHFCSSVFSLPLKTDSNPRGIFAESELYKIMAAVFTAIFYDADIGKSFELNQAARTVTQQLGQLTMANVEIIAKTGLIANLVNRLHRRDVLSEYGIHMIQRLLDSGLPATEIVWTHILPTAGGMVANQAQLFSQCLDYYLSEEGSGHLPEINRLAKENTPEADELLTRYFMEGARLRSSVALPRVAAQPTVVEDNGEKLTIKAGQVVMCNLVSACMDPTAFPDPEKVKLDRDMNLYAHFGFGPHKCLGLDLCKTGLSTMLKVLGRLDNLRRAPGAQGQLKKLSGPGGIAKYMNEDQSGFTPFPSTMKIQWDGELPQLKEDF |
| Enzyme Length | 1081 |
| Uniprot Accession Number | Q6RET3 |
| Absorption | |
| Active Site | ACT_SITE 374; /evidence=ECO:0000255 |
| Activity Regulation | |
| Binding Site | |
| Calcium Binding | |
| catalytic Activity | CATALYTIC ACTIVITY: Reaction=(9Z,12Z)-octadecadienoate + O2 = (8R,9Z,12Z)-8-hydroperoxyoctadeca-9,12-dienoate; Xref=Rhea:RHEA:25395, ChEBI:CHEBI:15379, ChEBI:CHEBI:30245, ChEBI:CHEBI:58659; EC=1.13.11.60; Evidence={ECO:0000269|PubMed:19286665}; CATALYTIC ACTIVITY: Reaction=(8R,9Z,12Z)-8-hydroperoxyoctadeca-9,12-dienoate = (5S,8R,9Z,12Z)-5,8-dihydroxyoctadeca-9,12-dienoate; Xref=Rhea:RHEA:31579, ChEBI:CHEBI:58659, ChEBI:CHEBI:63217; EC=5.4.4.5; Evidence={ECO:0000269|PubMed:19286665}; |
| DNA Binding | |
| EC Number | 1.13.11.60; 5.4.4.5 |
| Enzyme Function | FUNCTION: Bifunctional heme-containing enzyme that oxidizes linoleic acid to (8R,9Z,12Z)-8-hydroperoxyoctadeca-9,12-dienoate (within the N-terminal heme peroxidase domain), which is subsequently isomerized to (5S,8R,9Z,12Z)-5,8-dihydroxyoctadeca-9,12-dienoate (within the C-terminal P450 heme thiolate domain). Oxidized unsaturated fatty acids, so-called oxylipins, derived from endogenous fatty acids, influence the development of the asexual conidiophores and sexual cleistothecia and regulate the secondary metabolism. These substances were collectively named psi factors and are primarily a mixture of hydroxylated oleic, linoleic and alpha-linolenic acids. They are termed psi-beta, psi-alpha, and psi-gamma, respectively. {ECO:0000269|PubMed:14699095}. |
| Temperature Dependency | |
| PH Dependency | BIOPHYSICOCHEMICAL PROPERTIES: pH dependence: Optimum pH is 7-7.5. {ECO:0000269|PubMed:19286665}; |
| Pathway | |
| nucleotide Binding | |
| Features | Active site (1); Chain (1); Metal binding (2); Mutagenesis (2); Region (2) |
| Keywords | Dioxygenase;Heme;Iron;Isomerase;Metal-binding;Multifunctional enzyme;Oxidoreductase;Peroxidase |
| Interact With | |
| Induction | |
| Subcellular Location | |
| Modified Residue | |
| Post Translational Modification | |
| Signal Peptide | |
| Structure 3D | |
| Cross Reference PDB | - |
| Mapped Pubmed ID | - |
| Motif | |
| Gene Encoded By | |
| Mass | 120,784 |
| Kinetics | BIOPHYSICOCHEMICAL PROPERTIES: Kinetic parameters: KM=5 uM for palmitoleic acid {ECO:0000269|PubMed:19286665}; KM=6.71 uM for oleic acid {ECO:0000269|PubMed:19286665}; KM=18.3 uM for linoleic acid {ECO:0000269|PubMed:19286665}; KM=22.6 uM for alpha-linolenic acid {ECO:0000269|PubMed:19286665}; Vmax=1.76 umol/min/mg enzyme toward palmitoleic acid {ECO:0000269|PubMed:19286665}; Vmax=2.48 umol/min/mg enzyme toward oleic acid {ECO:0000269|PubMed:19286665}; Vmax=3.16 umol/min/mg enzyme toward linoleic acid {ECO:0000269|PubMed:19286665}; Vmax=2.97 umol/min/mg enzyme toward alpha-linolenic acid {ECO:0000269|PubMed:19286665}; |
| Metal Binding | METAL 202; /note=Iron (heme b axial ligand); /evidence=ECO:0000255|PROSITE-ProRule:PRU00298; METAL 377; /note=Iron (heme b axial ligand); /evidence=ECO:0000255|PROSITE-ProRule:PRU00298 |
| Rhea ID | RHEA:25395; RHEA:31579 |
| Cross Reference Brenda | 1.13.11.60;5.4.4.5; |