LMPD Database

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LMP010768

UniProt Annotations

Entry Information
Gene Nameperoxygenase 1
Protein EntryPXG1_ARATH
UniProt IDO81270
SpeciesArabidopsis
Comments
Comment typeDescription
Catalytic ActivityRH + ROOH = ROH + ROH. {ECO:0000269|PubMed:16956885}.
CofactorName=Ca(2+); Xref=ChEBI:CHEBI:29108;
CofactorName=heme b; Xref=ChEBI:CHEBI:60344; Note=Binds 1 heme b (iron(II)-protoporphyrin IX) group.;
Developmental StageExpressed during the early-to-late cotyledon stage of seed maturation. {ECO:0000269|PubMed:10380802, ECO:0000269|PubMed:11197322}.
Disruption PhenotypeNo visible phenotype, but retarded growth during the first 48 hours after germination. {ECO:0000269|PubMed:16961733}.
DomainThe proline-knot motif (118-127) may be involved in targeting to lipid bodies.
DomainTransmembrane regions are predicted by sequence analysis tools, but these regions probably constitute hydrophobic domains associated to phospholipids.
Enzyme RegulationInhibited by beta-mercaptoethanol and the organophosphorothioate terbufos. {ECO:0000269|PubMed:16956885}.
FunctionCalcium-binding peroxygenase involved in the degradation of storage lipid in oil bodies. May be involved in the interaction between oil bodies and vacuoles during seed germination and in the oxylipin signaling pathways and plant defense responses. Can catalyze sulfoxidation of thiobenzamide, hydroxylation of aniline, epoxidation of oleic acid or intramolecular oxygen transfer. {ECO:0000269|PubMed:16961733}.
InductionNot induced by abscisic acid or osmotic stress. {ECO:0000269|PubMed:11197322}.
PtmPhosphorylated. Partially phosphorylated at Ser-225, but not phosphorylated at Ser-72, Tyr-145, Thr-166 or Ser-172. Phosphorylation is not required for catalytic activity. {ECO:0000269|PubMed:17582382}.
SimilarityBelongs to the caleosin family. {ECO:0000305}.
SimilarityContains 1 EF-hand domain. {ECO:0000305}.
Subcellular LocationMicrosome membrane {ECO:0000269|PubMed:11197322}. Lipid droplet {ECO:0000269|PubMed:11197322}.
SubunitHomodimer. {ECO:0000269|PubMed:16956885, ECO:0000269|PubMed:17582382}.
Tissue SpecificityExpressed in seeds. Expression restricted to the developing embryo with enhanced expression in both the protoderm and vasculature. Detected in root tip cells throughout development. {ECO:0000269|PubMed:10380802, ECO:0000269|PubMed:11197322}.