We chose these two genes because the S-phase expression of both have been proposed to play checkpoint-independent roles in resistance to replicative stress, suggesting that their continued checkpoint-dependent expression may be a critical role of the transcriptional function of the S-phase checkpoints [13], [14].
To directly test whether Mrc1 plays a checkpoint role in cdc13-1 strains, cdc13-1 strains with additional mutations were first grown at the semi-permissive temperature 27.3 °C.
These findings argue that Aurora kinase has one or more direct roles to play in spindle checkpoint signaling in addition to the production of unattached kinetochores.
It is likely that defects in this checkpoint play a major role in predisposition to lymphoma 24 as cells undergoing programmed rearrangements during V(D J (variable [V], diversity [D], and joining [J]) recombination should not enter S-phase until repair takes place.
The spindle assembly checkpoint plays important roles in mitosis by preventing chromosome missegregation [ 34].
The prominent role that phosphorylation plays in the checkpoint is evident from our network.
Polo-like kinase-1 (PLK1) is a crucial driver of cell cycle progression and its down-regulation plays an important checkpoint role in response to DNA damage.
Third, it is not clear what role the interaction of Bub3-Bub1 with KNL1 plays in spindle checkpoint signalling in other organisms.
Although the C-terminal AAD is not required for replication, it is interesting to consider that Dpb11 may, by analogy to its role in checkpoints, play roles in the initiation process beyond simple scaffolding.
The authors state that this could explain the relative radiosensitivity differences; however, the S-phase checkpoint plays a critical role in maintaining the genome, and this instability could actually be the driving force leading to tumor development and heterogeneity.
ATM/ATR (ATM and Rad3-related -dependent pathways play impoRad3-related -dependentt activation which inhibits DNA synthesis quickly.
