1.14.14.3 5.5 6 - 1.14.14.3 6.5 - optimum for binding of FMNH2 1.14.14.3 6.5 7 optimum for reaction velocity 1.14.14.3 7 - - 1.14.14.3 7 - assay at 1.14.14.3 8.1 - optimum for quantum yield