Abstract
Inorganic polyphosphate is a polymer which plays multiple important roles in yeast and bacteria. In higher organisms the role of polyP has been intensively studied in last decades and involvements of this polymer in signal transduction, cell death mechanisms, energy production, and many other processes were demonstrated. In contrast to yeast and bacteria, where enzymes responsible for synthesis and hydrolysis of polyP were identified, in mammalian cells polyP clearly plays important role in physiology and pathology but enzymes responsible for synthesis of polyP or consumption of this polymer are still not identified. Here, we discuss the role of mitochondrial F0F1-ATP synthase in polyP synthesis with results, which confirm this proposal. We also discuss the role of other enzymes which may play important roles in polyP metabolism.
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