ID 1.13.11.92 DE fatty acid alpha-dioxygenase. CA a 1,2-saturated fatty acid + O2 = a (2R)-2-hydroperoxy fatty acid. CC -!- Contains heme. CC -!- This plant enzyme catalyzes the (2R)-hydroperoxidation of fatty CC acids. CC -!- It differs from lipoxygenases and cyclooxygenases in that the oxygen CC addition does not target an unsaturated region in the fatty acid. CC -!- In vitro the product undergoes spontaneous decarboxylation, resulting CC in formation of a chain-shortened aldehyde. CC -!- In vivo the product may be reduced to a (2R)-2-hydroxyfatty acid. CC -!- The enzyme, which is involved in responses to different abiotic and CC biotic stresses, has a wide substrate range that includes both CC saturated and unsaturated fatty acids. DR Q9SGH6, DOX1_ARATH ; Q2QRV3, PIOX_ORYSJ ; Q5GQ66, PIOX_PEA ; DR A0A1S3ZX38, PIOX_TOBAC ; //