cytochromes
myoglobin, and
hemoglobin.
Not surprisingly, an iron deficiency shows up first as anemia.
Cytochromes are pigments that contain iron. They are found in two very different environments.
D stroma, cytochromes
E antenna complexes, reaction centers
...
Many protein complexes containing cytochromes (which resemble hemoglobin and contain iron) are embedded in the inner membranes. They are responsible for the transport of electrons from the food we eat to the oxygen we breathe.
The most-studied gene products in this organism are those involved in the oxidation of ammonia, principally the hydroxylamine oxidoreductase (HAO), ammonia monooxygenase (AMO), and the accompanying cytochromes that make up the electron-transport ...
Cytochromes are molecules that pass the "hot potatoes" (electrons) along the ETS chain. Energy released by the "downhill" passage of electrons is captured as ATP by ADP molecules. The ADP is reduced by the gain of electrons.
In cyclic electron flow, the electron originates in a pigment complex called photosystem I, passes from the primary acceptor to ferredoxin, then to a complex of two cytochromes (similar to those found in mitochondria), ...
oxidative phosphorylation The electron transport system associated with aerobic respiration and mitochondria. In the release of energy through a series of cytochromes, three molecules of ATP are made.
Final electron acceptor 1/2O2 is reduced by 2H+ and 2e- to produce H2O
Net yield of 34ATP (30NADH, 4FADH) per glucose
//Cytochromes are iron-containing proteins → cytochrome a3 also contains copper and is irreversibly damaged by cyanide ...
 See also: Molecule, Trans, Action, Enzyme, Membrane
  
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