Which of the following concerning glutathione is not true?
1) Glutathione prevents hemolysis in red blood cells.
2) Glutathione is present in a high ratio of reduced to oxidized forms in glucose 6-phosphate dehydrogenase deficiency.
3) Functional glutathione requires glutathione reductase and NADPH.
4) Glutathione reacts with hydrogen peroxide and other reactive oxygen species (ROS).
5) Glutathione is a tripeptide consisting of glutamate, cysteine, and glycine