Bacillus subtilis/enzymology; Bacterial Proteins; Multienzyme Complexes/metabolism; Oxidoreductases/metabolism; Paracoccus denitrificans/enzymology; Succinate Dehydrogenase/metabolism; Amino Acid Sequence; Bacillus subtilis/drug effects; Bacillus subtilis/genetics; Carboxin/pharmacology; Drug Resistance, Microbial; Electron Transport Complex II; Enzyme Inhibitors/pharmacology; Hydroxyquinolines/pharmacology; Intracellular Membranes/chemistry; Intracellular Membranes/enzymology; Membrane Potentials; Membrane Proteins/chemistry; Membrane Proteins/metabolism; Molecular Sequence Data; Multienzyme Complexes/antagonists & inhibitors; Multienzyme Complexes/chemistry; Oxidoreductases/antagonists & inhibitors; Oxidoreductases/chemistry; Paracoccus denitrificans/drug effects; Paracoccus denitrificans/genetics; Quinone Reductases/chemistry; Quinone Reductases/metabolism; Sequence Alignment; Succinate Dehydrogenase/antagonists & inhibitors; Succinate Dehydrogenase/chemistry