All the following are inhibitors of cytochrome oxidase except
Site-III (Complex IV) * Cyanide * H2S * Azide transfer of electrons to molecular O2 * Co (Carbon monoxide): Inhibits Cyt. oxidase by combining with O2 binding site. It can be reversed by illumination with light. Amobarbital (Amytal) and Secobarbital: Inhibits electron transfer through NADH-Q reductase.Ref: MN Chatterjea Textbook of Medical Biochemistry, 8th edition, page no: 143
Carbon monoxide
Amytal
Cyanide
Azide
Respiratory chain