“MnO2 … with glucose by induced whole cells and cell extracts, was inhibited by 1 mM atebrine, 0.1 mM dicumarol , and 10 mM cyanide but not by antimycin A, 2n-nonyl-4-hydroxyguinoline-N-oxide) (NOQNO), 4,4,4-trifluoro-1-(2-thienyl),1,3-butanedione, or carbon monoxide.”
“MnO2 … with glucose by uninduced whole cells and cell extracts was strongly inhibited at 0.1 mM dicumarol , 100 mM azide, and 8 mM cyanide but not by atebrine or carbon monoxide, suggesting the involvement of a vitamin K--type quinone and a metalloenzyme in the electron transport chain.”