Cytochrome oxidase is inhibited by
Site I: This involves the transfer of electrons from NADH-CoQ. Obviously, this step is omitted by succinic dehydrogenase whose FADH2 prosthetic group transfers its electrons directly to CoQ bypassing NADH. This step is blocked by piericidin, rotenone, amobarbital, ceain drugs like chlorpromazine, guanethidine. among barbital is a barbiturate derivativeRef: MN Chatterjea Textbook of Medical Biochemistry, 8th Edition, Page no: 143
Cyanide
Aluminum phosphide
Phenobarbitone
Carbonmonoxide
Respiratory chain