1.1.99.6 membrane more than 85% of the enzyme is associated with the membrane, integral membrane protein, a significant portion including part of the FAD-binding pocket, is outside the membrane facing the S-layer. NADH oxidase (NoxA2) co-localized to the same sites in the membrane (NoxA2) may protect proteins involved in electron transfer by reducing O2 to H2O2 or H2O 16020 721463 1.1.99.6 mitochondrion - 5739 287839 1.1.99.6 particle-bound - - 287840