Df(3R)Hsc70-4Δ356 has a breakpoint just 3' of the end of the Hsc70-4 coding region. Deletion spans nucleotides -4357 to +4456.
Imprecise excision of the EP(3)0859 P-element, deleting 8773 nucleotides, including the entire Hsc70-4 gene. Position of mutation on reference sequence inferred by FlyBase curator.
Homozygous larvae show sporadic but reduced muscle contractions. The quantal content of evoked release in homozygotes and Hsc70-4Δ19/Hsc70-4Δ356 transheterozygotes is reduced to a third to a half of control. The EJP amplitudes recorded from mutant neuromuscular junctions (NMJs) are reduced to about 3/4 of control amplitudes.
Hsc70-4Δ356 has axon | larval stage phenotype, enhanceable by CspX1
Hsc70-4Δ356 is an enhancer of axon | larval stage phenotype of CspX1
The EJP amplitudes recorded from Hsc70-4Δ356, CspX1 double mutant neuromuscular junctions (NMJs) are reduced to about 1/2 of control amplitudes.