Life without myoglobin
2000
Garry*, D. J. | Meeson, A. | Yan, Z. | Williams, R. S.
Hemoproteins are widely distributed among prokaryotes, unicellular eukaryotes, plants and animals . Myoglobin, a cytoplasmic hemoprotein that is restricted to cardiomyocytes and oxidative skeletal myofibers in vertebrates, has been proposed to facilitate oxygen transport to the mitochondria . This cytoplasmic hemoprotein was the first protein to be subjected to definitive structural analysis and has been a subject of long-standing and ongoing interest to biologists . Recently, we utilized gene disruption technology to generate mice that are viable and fertile despite a complete absence of myoglobin . This unexpected result led us to reexamine existing paradigms regarding the function of myoglobin in striated muscle.
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