1.3.99.18 12575 XX. Quinaldic acid 4-oxidoreductase from Pseudomonas sp. AK-2 compared to other procaryotic molybdenum-containing hydroxylases Pseudomonas sp. 1.3.99.18 12575 XX. Quinaldic acid 4-oxidoreductase from Pseudomonas sp. AK-2 compared to other procaryotic molybdenum-containing hydroxylases Pseudomonas sp. AK-2 1.3.99.18 12576 XVIII. Purification and some properties of the molybdenum- and iron-containing quinaldic acid 4-oxidoreductase from Serratia marcescens 2CC-1 Serratia marcescens 1.3.99.18 12576 XVIII. Purification and some properties of the molybdenum- and iron-containing quinaldic acid 4-oxidoreductase from Serratia marcescens 2CC-1 Serratia marcescens 2CC-1