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The ring-shaped hexameric helicases that function at DNA replication forks.


ABSTRACT: DNA replication requires separation of genomic duplex DNA strands, an operation that is performed by a hexameric ring-shaped helicase in all domains of life. The structures and chemomechanical actions of these fascinating machines are coming into sharper focus. Although there is no evolutionary relationship between the hexameric helicases of bacteria and those of archaea and eukaryotes, they share many fundamental features. Here we review recent studies of these two groups of hexameric helicases and the unexpected distinctions they have also unveiled.

SUBMITTER: O'Donnell ME 

PROVIDER: S-EPMC5876725 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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The ring-shaped hexameric helicases that function at DNA replication forks.

O'Donnell Michael E ME   Li Huilin H  

Nature structural & molecular biology 20180129 2


DNA replication requires separation of genomic duplex DNA strands, an operation that is performed by a hexameric ring-shaped helicase in all domains of life. The structures and chemomechanical actions of these fascinating machines are coming into sharper focus. Although there is no evolutionary relationship between the hexameric helicases of bacteria and those of archaea and eukaryotes, they share many fundamental features. Here we review recent studies of these two groups of hexameric helicases  ...[more]

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