Flavanone 4-reductase

{{infobox enzyme

| Name = flavanone 4-reductase

| EC_number = 1.1.1.234

| CAS_number = 115232-53-6

| GO_code = 0047890

| image =

| width =

| caption =

}}

In enzymology, a flavanone 4-reductase ({{EC number|1.1.1.234}}) is an enzyme that catalyzes the chemical reaction

:(2S)-flavan-4-ol + NADP⁺ $\backslash rightleftharpoons$ (2S)-flavanone + NADPH + H⁺

Thus, the two substrates of this enzyme are (2S)-flavan-4-ol and NADP⁺, whereas its 3 products are (2S)-flavanone, NADPH, and H⁺.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD⁺ or NADP⁺ as acceptor. The systematic name of this enzyme class is (2S)-flavan-4-ol:NADP⁺ 4-oxidoreductase. This enzyme participates in flavonoid biosynthesis.