FEATURES

FAMILY

NADP-dependent oxidoreductase L4BD family

DESCRIPTION

Also known as AER_ARATH, AER, P1. Involved in the detoxification of reactive carbonyls (PubMed:10848984, PubMed:12514241, PubMed:16299173). Acts on lipid peroxide-derived reactive aldehydes (PubMed:12514241). Specific to a double bond activated by an adjacent carbonyl group (PubMed:12514241). Can use both quinones and diamide as substrates, but not menadione, ferricyanide or phylloquinone (PubMed:10848984). Can use 4-hydroxy-(2E)-nonenal (HNE), 4-hydroxy-(2E)-hexenal (HHE), (2E)-nonenal, (2E)-hexenal, (2E)-pentenal, propenal (acrolein), 3-buten-2-one and 3-penten-2-one, but not (R)-(-)-carvone, n-nonanal, n-hexanal, (3Z)-hexanal, cyclohex-2-en-1-one or 12-oxo phytodienoic acid (OPDA) as electron acceptors (PubMed:12514241). Catalyzes the reduction of the alpha, beta-unsaturated bond of 2-alkenals, of lipid peroxide-derived oxenes 9-oxo-10(E), 12(Z)-octadecadienoic acid (9-KODE) and 13-oxo-9(Z), 11(E)-octadecadienoic acid (13-KODE), as well as 4-oxo-(2E)-nonenal and 4-hydroxynonenal (PubMed:16299173). Can use 12-oxo-10(E) dodecanoate (traumatin), trans-1, 3 diphenyl-2-propenone, trans-1, 4-diphenyl-2-butene-1, 4-dione, 9-oxo-12, 13-epoxy-(10E)-octadecenoic acid (trans-EKODE-1b) and 9, 13-dihydroxy-10-oxo-11-octadecenoic acid as substrates (PubMed:26678323). Catalyzes the reduction of the 7-8 double bond of phenylpropanal substrates, such as p-coumaryl aldehyde and coniferyl aldehyde (in vitro) (PubMed:17028190). Has activity towards toxic substrates, such as 4-hydroxy-(2E)-nonenal (in vitro) (PubMed:17028190). May play a distinct role in plant antioxidant defense and is possibly involved in NAD(P)/NAD(P)H homeostasis (PubMed:17028190). Homodimer.

EXTERNAL LINKS

AER

NADPH-dependent oxidoreductase 2-alkenal reductase

AER

Molecular Synopsis