Journal
CURRENT GENETICS
Volume 63, Issue 5, Pages 813-818Publisher
SPRINGER
DOI: 10.1007/s00294-017-0690-y
Keywords
Mrc1; Claspin; Cdc7 kinase; Replication timing; Origin firing; Intramolecular interaction
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Funding
- Grants-in-Aid for Scientific Research [16K14675] Funding Source: KAKEN
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Mrc1 and its vertebrate homologue Claspin serve as a mediator for replication stress checkpoint signaling, receiving the signal from Mec1/Rad3/ATR sensor kinase and transmitting it to the effector Rad53/Cds1/Chk1 kinase. They are likely to be a part of the replisome and facilitate the S-phase progression by promoting replication fork progression. Recent reports on Mrc1/Claspin indicate their new role in regulating the replication initiation through interaction with Cdc7, a key conserved serine-threonine kinase that triggers firing at each replication origin. Mrc1/Claspin has a specific domain that specifically interacts with Cdc7, and this domain is involved also in intramolecular interaction with its N-terminal segment. Mechanisms for novel regulation of origin firing and its timing through recruitment of Cdc7 to Mrc1/Claspin will be discussed.
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