UASt regulatory sequences drive expression of a cDNA encoding the Chchd2-PA isoform, mutated to carry a G88V amino acid replacement (this change is equivalent to a G66V change in the human CHCHD10 gene, a pathogenic variant associated with spinal muscular atrophy). The coding sequence is tagged at the C-terminal end with Tag:V5.
G17150049T
G88V | Chchd2-PA; G40V | Chchd2-PB
G88V
Analogous G66V mutation in human CHCHD10 implicated in spinal muscular atrophy, Jokela type; mutation carried on in vitro construct; site of nucleotide substitution in fly gene inferred by FlyBase curator based on reported amino acid change.
Expressing Chchd2G88V.UAS.PA.Tag:V5 under the control of Scer\GAL4da.G32 leads to adult flight muscle mitochondria to progressively show a vacuolar morphology (observed at day 30 but not at day 2).
Chchd2G88V.UAS.PA.Tag:V5 is partially rescued by Scer\GAL4da.G32/Chchd2UAS.PA.Tag:V5