ATPase switches controlling DNA replication initiation.
Proteins that bind and hydrolyze ATP are frequently involved in the early steps of DNA replication. Recent studies of Saccharomyces cerevisiae suggest that two members of the AAA+ ATPase family--the origin recognition complex and Cdc6p--have separable roles for ATP binding and ATP hydrolysis during eukaryotic DNA replication. Intriguingly, the proposed regulation of these eukaryotic replication proteins by ATP has functional similarities to the ATP-dependent control of the DnaA and DnaC initiation factors from Escherichia coli. Comparison of the ATP regulation of these factors suggests that ATP binding and hydrolysis acts as a molecular switch that couples key events during initiation of replication. This switch results in a significant change in protein function.
Lee
D G
DG
Massachusetts General Hospital, Boston, MA 02114, USA.
Bell
S P
SP
D000251:Adenosine Triphosphatases / Q000378:metabolism*; D000255:Adenosine Triphosphate / Q000378:metabolism; D001426:Bacterial Proteins / Q000378:metabolism; D018797:Cell Cycle Proteins / Q000235:genetics / Q000378:metabolism; D004265:DNA Helicases / Q000378:metabolism; D004261:DNA Replication / Q000502:physiology*; D004268:DNA-Binding Proteins / Q000378:metabolism; D004926:Escherichia coli / Q000378:metabolism; D029968:Escherichia coli Proteins; D005656:Fungal Proteins / Q000235:genetics / Q000378:metabolism; D009154:Mutation; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000378:metabolism; D029701:Saccharomyces cerevisiae Proteins
D001426:Bacterial Proteins; C066503:CDC6 protein, S cerevisiae; D018797:Cell Cycle Proteins; D004268:DNA-Binding Proteins; C066312:DnaA protein, Bacteria; C071702:DnaC protein, E coli; D029968:Escherichia coli Proteins; D005656:Fungal Proteins; D029701:Saccharomyces cerevisiae Proteins; D000255:Adenosine Triphosphate; D000251:Adenosine Triphosphatases; D004265:DNA Helicases