Oxygen enzymes and

Plasma The fluid component of blood that consists of 55% of total blood volume is comprised mostly of water and a small percentage of solutes. Solutes are glucose, protein, lipids, amino acids, electrolytes, minerals, lactic and pyruvic acids, hormones, enzymes, oxygen, and carbon dioxide. 

The oxygenated iron compound reported here requires much more detailed characterization. Nevertheless, our findings are quite consistent with the view that dioxygenase reactions in general involve a ternary complex of enzyme, oxygen, and organic substrate (7, 15). The role of tryptophan in the complex is now under investigation. 

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