2.3.1.86 4'-phosphopantetheine 4.0-5.0 mol per mol enzyme 487574 2.3.1.86 4'-phosphopantetheine 4.0-5.0 mol per mol enzyme or about 1 mol per 2 subunits 487574, 487607 2.3.1.86 4'-phosphopantetheine alpha-subunit bears prosthetic group 487574 2.3.1.86 4'-phosphopantetheine requirement, pantetheinate-free mutants have no beta-ketoacyl synthetase activity 487600 2.3.1.86 FMN 4 mol FMN per mol of enzyme complex 487605 2.3.1.86 FMN requirement, enoyl reductase activity, associated with beta-subunit, 6 mol per mol synthetase 487574 2.3.1.86 NADH - 487611 2.3.1.86 NADH requirement, 25% as efficient as NADPH 487605 2.3.1.86 NADPH - 486863, 487614 2.3.1.86 NADPH requirement 487574, 487600, 487601, 487602, 487603, 487604, 487605, 487607, 487611