Fragment that encodes a mutant form of Mlc2 in which a phosphorylation site has been mutated to a non-phosphorylatable residue (amino acid substitution S67A).
Amino acid replacement: S67A.
Indirect flight muscles appear normal.
Indirect flight muscles appear normal. Two copies of P{Mlc2S67A} restores viability to Mlc2E38 homozygotes.