Extracellular
superoxide
dismutase [Cu-Zn]
Superoxide
dismutase [Cu-Zn]
Superoxide
dismutase [Mn],
mitochondrial
Catalase
5,6-
dihydroxyindole-
2-carboxylic acid
oxidase
H2O2
H2O2
Superoxide
H+
O2
Superoxide
H+
O2
H2O2
H+
O2
O2
H2O
H2O
Copper
Zinc (II) ion
Copper
Zinc (II) ion
Manganese
Heme
NADP
Copper
Pathway for pigment cells
only
Melanosome Membrane
Peroxisome
Extracellular Hydrogen
Peroxides scavenging by
blood cells
Mitochondria
Extracellular Space
Intracellular Space