Amino acid replacement I136M in the Act88F coding region. The equivalent mutation in the human ACTA1 gene is associated with mild nemaline myopathy.
C15441026G
C?G
I137M | Act88F-PA
I136M
Analogous mutation in human ACTA1 implicated in nemaline myopathy 3; mutation carried on in vitro construct.
Flies carrying one copy of Act88FI136M in a Act88F6/+ background show reduced flight ability.
Flies carrying one copy of Act88FI136M in a Act88F6/+ background show intermediate defects in myofibril organisation in the indirect flight muscles. The defects are stronger in flies carrying two copies of Act88FI136M 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 Act88FI136M in a Act88F6/+ background.
Expression of Act88F+t4.0 in flies carrying one copy of Act88FI136M in a Act88F6/+ background rescues flight ability.