UAS regulatory sequences drive expression of Act57B carrying an amino acid substitution equivalent to a variant that has been reported to be associated with hypertrophic cardiomyopathy when mutated in the human ACTC1 ortholog. The protein is tagged with GFP. (FlyBase curator comment: the mutation in the Act57B gene is given as A295S in FBrf0236636, however analysis of the release 6.32 annotated gene model indicates the change to be A296S).
G20945689T
GCC>TCC
A296S | Act57B-PA
A296S
Analogous A297S mutation in human ACTC1 implicated in cardiomyopathy, familial hypertrophic 11; mutation carried on in vitro construct.
The expression of Act57BA295S.Scer\UAS.T:Avic\GFP under the control of Scer\GAL4Hand.PU leads to significant decreases in diastolic diameter, systolic diameter and fractional shortening and a significant increase in systolic interval to the heart period, as compared to controls.