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Myoglobin: Just an Oxygen Store or Also an Oxygen Transporter?
Klaus D. Jürgens1, Simon Papadopoulos, Thomas Peters
1Zentrum Physiologie, Medizinische Hochschule, 30623 Hannover, Germany.
Abstract:
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 PO(2) gradient. We reassess the importance of myoglobin-facilitated oxygen diffusion by applying new findings on the intracellular diffusivity of myoglobin in a model calculation.