Function
Aldo/keto reductase with broad substrate spectrum. Catalyzes the NADPH-dependent reduction of aldehyde- and ketone-groups of different classes of carbonyl compounds to the corresponding alcohols. Highest enzymatic efficiency is observed with 4-oxonon-2-enal (4-ONE) and 4-hydroxynon-2-enal (4-HNE), that are lipid peroxidation products, and 9,10-phenanthrenequinone (9,10-PQ), a photoproduct of phenanthrene that is one of the most prevalent polycyclic aromatic hydrocarbons in the environment. Is also active on sugar-derived reactive carbonyls such as methylglyoxal (MG), glyoxal and 3-deoxyglucosone (3-DG), and on other lipid-derived carbonyls such as acrolein. May be involved in the detoxification of the toxic lipid peroxidation products 4-ONE and 4-HNE besides many other exo- and endogenic reactive carbonyl compounds (RCs) that may lead to photoinhibition or other cell damages.
Sequence
MQSFNRINSMKYFPLSNGEQIPALGLGTWKSSPQVVGQAVEQALDLGYRHLDCAAIYGNEAEIGATLANAFTKGVVKREELWITSKLWSNAHHPDAVLPALEKTLQDLGLDYLDLYLIHWPVVIQPDVGFPESGDQLLPFTPASLEGTWQALEKAVDLGLCHHIGVSNFSLKKLEMVLSMARIPPAVNQVELHPYLQQSDLLTFANSQNILLTAYSPLGSGDRPAAFQQAAEPKLLTDPVINGIAAEQGCSAAQVLLAWAIQRGTVTIPKSVNPERLEQNLRAADITLTDSEMAKIALLDRHYRYVSGDFWTMPGSPYTLQNLWDEI