Taken together, our in vivo results further corroborate the conclusion that the missense mutations in RHEB act as dominant activating mutations.
This suggests that most or even all of the causal mutations in Qrr1 act in cis.
CDKN1C mutations in BWS act as a "double-negative", promoting proliferation due to loss of cell cycle inhibition, and then predisposition to cancer.
Using a Mendelian randomization approach that takes advantage of the properties of genetic variation and follows similar logic (such that mutations in NCP1L1 act as genocopies mimicking the action of ezetimibe), Stitziel et al. [ 6] attempt to separate causation from association, providing validation of NCP1L1 as a therapeutic target.
We measured reversion in starvation-stressed cells as previously described (Shee et al., 2011a), under conditions in which the formation of nearby mutations (at tet2; Figure 1A) requires the RpoS and SOS stress responses, DinB error-prone DNA polymerase, and HR/DSB-repair enzymes RecBC, RecA, and RuvABC, and the mutations arise in acts of DSB repair (Ponder et al., 2005; Shee et al., 2011a).
The wp locus in soybean is a unique example of an insertional mutation in the act of de novo generation of fused, multiple chimeric exons through inclusion or exclusion of cassette exons carried by the element into the affected gene.
Prolonged exposure to the drug can result in compensating mutations that act in combination to permit optimal polyprotein processing and replicative capacity in the presence of the PR inhibitor.
We reasoned that if CTCF is involved in regulation of the rDNA, then mutations in CTCF should act as modifier of variegation, but only if that variegation is induced by the rDNA.
Interestingly, flies that are doubly heterozygous for null mutations in mhc and Act 88F (therefore having a 1∶1 mhc: actin ratio) can fly, although not as well as wild type (with a 2∶2 ratio) [3].
In fact, RAC3 does not require mutations in order to act as an oncogene.
