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K. D. Jürgens, S. Papadopoulos, T. Peters, and G. Gros are at the Zentrum Physiologie, Medizinische Hochschule, 30623 Hannover, Germany.
Besides acting as an oxygen store during times of reduced blood oxygen supply, myoglobin can also facilitate intracellular oxygen transport by diffusion of oxymyoglobin along a PO2 gradient. We reassess the importance of myoglobin-facilitated oxygen diffusion by applying new findings on the intracellular diffusivity of myoglobin in a model calculation.
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