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The archaeo-eukaryotic GINS proteins and the archaeal primase catalytic subunit PriS share a common domain.

ABSTRACT: UNLABELLED: Primase and GINS are essential factors for chromosomal DNA replication in eukaryotic and archaeal cells. Here we describe a previously undetected relationship between the C-terminal domain of the catalytic subunit (PriS) of archaeal primase and the B-domains of the archaeo-eukaryotic GINS proteins in the form of a conserved structural domain comprising a three-stranded antiparallel beta-sheet adjacent to an alpha-helix and a two-stranded beta-sheet or hairpin. The presence of a shared domain in archaeal PriS and GINS proteins, the genes for which are often found adjacent on the chromosome, suggests simple mechanisms for the evolution of these proteins. REVIEWERS: This article was reviewed by Zvi Kelman (nominated by Michael Galperin) and Kira Makarova.

SUBMITTER: Swiatek A

PROVIDER: S-EPMC2861644 | biostudies-literature | 2010

REPOSITORIES: biostudies-literature

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The archaeo-eukaryotic GINS proteins and the archaeal primase catalytic subunit PriS share a common domain.

Swiatek Agnieszka A Macneill Stuart A SA

Biology direct 20100412

<h4>Unlabelled</h4>Primase and GINS are essential factors for chromosomal DNA replication in eukaryotic and archaeal cells. Here we describe a previously undetected relationship between the C-terminal domain of the catalytic subunit (PriS) of archaeal primase and the B-domains of the archaeo-eukaryotic GINS proteins in the form of a conserved structural domain comprising a three-stranded antiparallel beta-sheet adjacent to an alpha-helix and a two-stranded beta-sheet or hairpin. The presence of ...[more]

PMID: 20385010

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