Amino acid replacement V163L in the Act88F coding region. The equivalent mutation in the human ACTA1 gene is associated with severe actinopathy and intranuclear rods.
G15441105C
G?C
V164L | Act88F-PA
V163L
Analogous mutation in human ACTA1 implicated in nemaline myopathy 3; mutation carried on in vitro construct.
Flies carrying one copy of Act88FV163L in a Act88F6/+ background are completely flightless.
Flies carrying one copy of Act88FV163L in a Act88F6/+ background show major defects in Z-disc organisation in the indirect flight muscles.
Areas in which Z-discs appear to be splitting apart are seen in the indirect flight muscles of flies carrying one copy of Act88FV163L in a Act88F6/+ background.
Ring-like Z-disc structures or aggregates and F-actin containing intranuclear rods are seen in the indirect flight muscles of flies carrying one copy of Act88FV163L in a Act88F6/+ background.
Expression of Act88F+t4.0 in flies carrying one copy of Act88FV163L in a Act88F6/+ background largely partially flight ability. Normal myofibril structure in the indirect flight muscles is rescued.