Syt1unspecified homozygous mutant larvae show neurotransmission defects at neuromuscular junctions as they fail to support calcium-triggered neurotransmitter release: flat excitatory postsynaptic current trace (recorded in 2 mM external Ca[2+]) with zero amplitude, reduced cumulative vesicle release (defined by charge transfer), high frequency of miniature excitatory junction currents.
Syt1unspecified is rescued by Scer\GAL4elav-C155/Syt1UAS.Tag:MYC
Syt1unspecified is partially rescued by Syt1elav.PD
Syt1unspecified is not rescued by Scer\GAL4elav-C155/Syt1D362A.UAS.Tag:MYC
The neurotransmission defects at neuromuscular junctions in (they fail to support calcium-triggered neurotransmitter release: flat excitatory postsynaptic current, recorded in 2 mM external Ca[2+] with zero amplitude, reduced cumulative vesicle release (defined by charge transfer), high frequency of miniature excitatory junction currents) characteristic for Syt1unspecified mutant third instar larvae can be rescued by Scer\GAL4elav-C155-driven expression of Syt1Scer\UAS.T:Hsap\MYC but not Syt1D362A.Scer\UAS.T:Hsap\MYC in the mutant background.