V528P
Mutation in analogous codon in human LMNA putatively associated with muscular dystropy; mutation carried on in vitro construct; site of nucleotide substitution in fly gene inferred by FlyBase curator based on reported amino acid change.
The expression of LamCV528P.UAS under the control of Scer\GAL4fln.IFM or Scer\GAL4Act88F.PB leads to a severe and progressive decrease in flight ability, until individuals are unable to fly; expression under the control of Scer\GAL4EDTP-DJ694 leads to a mild decrease in flight ability.
Adult indirect flight muscles expressing LamCV528P.UAS under the control of either Scer\GAL4fln.IFM or Scer\GAL4EDTP-DJ694 show myofibril disorganization, abnormal nuclear morphology, including nuclear envelope blebbing, and nuclear misalignment. The Scer\GAL4fln.IFM-driven expression also leads to a nearly fully penetrant 'held-up wing' phenotype.
Expression of LamCV528P.Scer\UAS under the control of Scer\GAL4C57 leads to larval locomotion defects and semi-lethality at the pupal stage. A subset of the larval body wall muscles show abnormally shaped and spaced nuclei, and disorganization of the actin cytoskeleton.
Third instar larvae expressing LamCV528P.Scer\UAS under the control of Scer\GAL4C57 show reduced mobility. Myonuclei appear aggregated in approximately 30% of body wall muscles.