Amino acid replacement D292V in the Act88F coding region. The equivalent mutation in the human ACTA1 gene is associated with congenital fibre type disproportion.
A15441493T
A?T
D293V | Act88F-PA
D292V
Analogous mutation in human ACTA1 implicated in myopathy, congenital fiber-type disproportion; mutation carried on in vitro construct.
Flies carrying one copy of Act88FD292V in a Act88F6/+ background are completely flightless.
Flies carrying one copy of Act88FD292V in a Act88F6/+ background show intermediate defects in myofibril organisation in the indirect flight muscles. Z-discs are less regular than normal. The defects are milder in flies carrying two copies of Act88FD292V in a homozygous Act88F6 background.
Closely packed Z-disc stacks or "zebra bodies" are seen in the indirect flight muscles of flies carrying one copy of Act88FD292V in a Act88F6/+ background.
Act88F6, Act88FD292V has flightless phenotype, suppressible by up101
Act88F6, Act88FD292V has flightless phenotype, suppressible by wupAhdp-2
Flight ability is largely rescues in flies carrying one copy of Act88FD292V in a Act88F6/+ background if they are also hemizygous for either up101 or wupAhdp-2.
Expression of Act88F+t4.0 in flies carrying one copy of Act88FD292V in a Act88F6/+ background rescues flight ability.