Abstract

This chapter discusses the relationships between mitochondrial structure, metabolic control, and ion transport. It also discusses structure in relation to metabolic steady state, oscillatory changes in mitochondrial structure, effect of composition of suspending medium on metabolically related structural changes, the effects of ADP, DNP and phosphate on mitochondrial structure, the effects of divalent cations on mitochondrial structure, metabolically related structural changes of mitochondria in situ, and the significance of the changes in the internal organization of isolated mitochondria. There are three ways in which the intramitochondrial structural changes may be involved in metabolic control: (1) the morphological changes are the primary events; (2) the morphological changes are secondary events, the primary event being a change in permeability of the inner membrane leading to a change in the rates of ion translocation; and (3) changes in both structure and permeability occur simultaneously and act either antagonistically or synergistically.

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