Consequences of mutations in human DNA polymerase gamma.

Abstract excerpt

DNA polymerase gamma is responsible for replication and repair of the mitochondrial genome. Human DNA polymerase gamma is composed of a 140-kDa catalytic subunit and a 55-kDa accessory subunit. Mutations in the gene for the catalytic subunit (POLG) have been shown to be a frequent cause of mitochondrial disorders. To date over 40 disease mutations and 9 nonsynonymous polymorphisms in POLG have been found to be...

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