Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
A [auth B]SCOP2B SuperfamilyFMN-linked oxidoreductases 8082035 3000014 SCOP2B (2022-06-29)
B [auth A]SCOP2B SuperfamilyFMN-linked oxidoreductases 8082035 3000014 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
A [auth B]Oxidored_FMNe2hsaB1 A: a/b barrelsX: TIM beta/alpha-barrelH: TIM barrels (From Topology)T: TIM barrelsF: Oxidored_FMNECOD (1.6)
B [auth A]Oxidored_FMNe2hsaA1 A: a/b barrelsX: TIM beta/alpha-barrelH: TIM barrels (From Topology)T: TIM barrelsF: Oxidored_FMNECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

ChainDomainClassArchitectureTopologyHomologyProvenance Source (Version)
A [auth B]3.20.20.70 Alpha Beta Alpha-Beta Barrel TIM Barrel Aldolase class ICATH (4.3.0)
B [auth A]3.20.20.70 Alpha Beta Alpha-Beta Barrel TIM Barrel Aldolase class ICATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A [auth B],
B [auth A]
PF00724NADH:flavin oxidoreductase / NADH oxidase family (Oxidored_FMN)NADH:flavin oxidoreductase / NADH oxidase family- Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A [auth B],
B [auth A]
12-oxophytodienoate reductase 3

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
12-oxophytodienoate reductase  M-CSA #697

12-Oxophytodienoate reductase 3 (OPR3) from tomato catalyses the reduction of a carbon-carbon double bond in 9S, 13S-12-oxo-phytodienoate (9S, 13S-OPDA) producing 1S,2S-3-oxo-2(2'[Z]-pentenyl)-cyclopentane-1-octanoate. The product is subsequently converted to jasmonic acid which is a plant hormone. OPR3 is a homologue of old yellow enzyme (OYE) and has a similar catalytic mechanism. OPR3 dimerises with a low affinity in vitro but the dimer is not catalytically active. Dimerisation in vivo could be regulated by phosphorylation as part of a control mechanism..

Defined by 3 residues: HIS:A-191 [auth B-185]HIS:A-194 [auth B-188]TYR:A-196 [auth B-190]
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