Imprecise excision of the progenitor insertion, resulting in a deletion that removes almost the entire Smn transcription unit (the deletion extends from 93bp upstream of the transcription start site through all but the final 44bp of the 3'UTR) without affecting nearby loci.
SmnX7 homozygous larvae show severe decrease in locomotor ability, as compared to controls.
Expression of SmndsRNA.FL.Scer\UAS.WIZ under the control of Scer\GAL4tub.PU in a SmnX7 background results in a fully penetrant pupal lethality, with none of the pupae reaching a pigmented developmental stage.
SmnX7/SmnX7 third instar larvae are smaller, have significantly decreased muscle surface area, show significantly decreased locomotion velocity, have disrupted rhythmic motor activity (significantly increased spontaneous inter-spike intervals), and at the neuromuscular junction show significantly increased evoked excitatory postsynaptic potential amplitude, increased miniature excitatory postsynaptic potential frequency and increased quantal content compared to wild type.
SmnX7/Smn73Ao or SmnX7/SmnE33 third instar larvae have significantly increased evoked excitatory postsynaptic potential amplitude at the neuromuscular junction.
SmnX7/+ third instar larvae have a similar number of boutons per muscle at the neuromuscular junction, compared to controls.
SmnX7 has abnormal neurophysiology | larval stage phenotype, suppressible by Scer\GAL4nSyb.PS
SmnX7 has abnormal neurophysiology | larval stage phenotype, suppressible by Scer\GAL4ChAT.7.4
SmnX7 has abnormal size | larval stage phenotype, suppressible by Scer\GAL4nSyb.PS
SmnX7 has abnormal size | larval stage phenotype, suppressible by Scer\GAL4ChAT.7.4
SmnX7 has abnormal neurophysiology | larval stage phenotype, non-suppressible by Scer\GAL4VGlut1-OK371
SmnX7 has abnormal size | larval stage phenotype, non-suppressible by Scer\GAL4VGlut1-OK371
SmnX7 has abnormal locomotor behavior | larval stage phenotype, non-suppressible by Scer\GAL4nSyb.PS
SmnX7 has abnormal locomotor behavior | larval stage phenotype, non-suppressible by Scer\GAL4ChAT.7.4
SmnX7 has abnormal locomotor rhythm | larval stage phenotype, non-suppressible by Scer\GAL4nSyb.PS
SmnX7 has abnormal locomotor rhythm | larval stage phenotype, non-suppressible by Scer\GAL4ChAT.7.4
Smn[+]/SmnX7, htlAB42 has abnormal neuroanatomy | third instar larval stage phenotype
SmnX7 has larval somatic muscle cell | larval stage phenotype, suppressible by Scer\GAL4nSyb.PS
SmnX7 has larval somatic muscle cell | larval stage phenotype, suppressible by Scer\GAL4ChAT.7.4
SmnX7 has embryonic/larval neuromuscular junction | larval stage phenotype, suppressible by Scer\GAL4nSyb.PS
SmnX7 has embryonic/larval neuromuscular junction | larval stage phenotype, suppressible by Scer\GAL4ChAT.7.4
SmnX7 has embryonic/larval neuromuscular junction | larval stage phenotype, non-suppressible by Scer\GAL4VGlut1-OK371
SmnX7 has larval somatic muscle cell | larval stage phenotype, non-suppressible by Scer\GAL4VGlut1-OK371
Smn[+]/SmnX7, htlAB42 has NMJ bouton | third instar larval stage phenotype
Smn[+]/SmnX7, htlAB42 has embryonic/larval neuromuscular junction | third instar larval stage phenotype
Presence of SmnX7 or Df(3L)ED4782 does not result in significant progressive flight or survival phenotypes in flies with expression of Gem3ΔN.Scer\UAS driven by Scer\GAL4Mef2.PR.
Expression of stasScer\UAS.cLa either pan-neuronally under the control of Scer\GAL4n-syb.PS or in cholinergic neurons using Scer\GAL4Cha.7.4 rescues the increase in neuromuscular junction evoked excitatory postsynaptic potential (eEPSP) amplitudes seen in SmnX7 mutant larvae. The reduction in muscle size is rescued to 80% of that in control larvae. Expression of stasScer\UAS.cLa in the glutamatergic motor neurons using the Scer\GAL4VGlut-OK371 driver fails to rescue either the eEPSP or muscle size phenotypes. The locomotor activity defects seen in SmnX7 mutants are not rescued by any of the three drivers.
SmnX7 is rescued by Smnv.Tag:FLAG
SmnX7 is rescued by SmnS201A.v.Tag:FLAG
SmnX7 is rescued by SmnΔMGLR.v.Tag:FLAG
SmnX7 is rescued by SmnEAL.v.Tag:FLAG
SmnX7 is rescued by SmnL207Y,G210C.Tag:FLAG
SmnX7 is rescued by SmnL207Y.Tag:FLAG
SmnX7 is rescued by SmnMGLR.Tag:FLAG
SmnX7 is rescued by SmnY204H.v.Tag:FLAG
SmnX7 is rescued by SmnTag:FLAG
SmnX7 is rescued by Smnv.Tag:FLAG
SmnX7 is rescued by SmnS201A.v.Tag:FLAG
SmnX7 is rescued by SmnY203C.Tag:FLAG/SmnTag:FLAG/Scer\GAL4Act.PU/SmnUAS.Tag:FLAG
SmnX7 is rescued by Scer\GAL4da.PU/SmnUAS.Tag:FLAG
SmnX7 is rescued by SmnUAS.Tag:FLAG/Scer\GAL4nSyb.PS
SmnX7 is rescued by SmnUAS.Tag:FLAG/Scer\GAL4ChAT.7.4
SmnX7 is partially rescued by SmnF70S.Tag:FLAG/SmnY208C.Tag:FLAG
SmnX7 is partially rescued by SmnF70S.Tag:FLAG/SmnTag:FLAG
SmnX7 is partially rescued by SmnG210C.Tag:FLAG
SmnX7 is partially rescued by SmnL207Y,G210V.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnY208C.Tag:FLAG
SmnX7 is partially rescued by SmnV72G.Tag:FLAG/SmnY208C.Tag:FLAG
SmnX7 is partially rescued by SmnY204H.ΔMGLR.v.Tag:FLAG
SmnX7 is partially rescued by SmnY208C.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnV72G.Tag:FLAG
SmnX7 is partially rescued by SmnT205I.Tag:FLAG
SmnX7 is partially rescued by SmnF70S.Tag:FLAG
SmnX7 is partially rescued by SmnV72G.Tag:FLAG
SmnX7 is partially rescued by SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnF70S.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnV72G.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnS201A.G206S.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnM194R.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnTag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnG206S.Tag:FLAG
SmnX7 is partially rescued by SmnD20V.Tag:FLAG
SmnX7 is partially rescued by SmnG73R.Tag:FLAG
SmnX7 is partially rescued by SmnI93F.Tag:FLAG
SmnX7 is partially rescued by SmnY107C.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnD20V.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnG73R.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnI93F.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnT205I.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnY107C.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnY203C.Tag:FLAG/SmnV72G.Tag:FLAG
SmnX7 is partially rescued by SmnI93F.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnD20V.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnG210V.Tag:FLAG/SmnG210C.Tag:FLAG
SmnX7 is partially rescued by SmnY107C.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnM194R.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnTag:FLAG/SmnV72G.Tag:FLAG
SmnX7 is partially rescued by SmnT205I.Tag:FLAG
SmnX7 is partially rescued by SmnF70S.Tag:FLAG
SmnX7 is partially rescued by SmnV72G.Tag:FLAG
SmnX7 is partially rescued by SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnF70S.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnV72G.Tag:FLAG/SmnG210V.Tag:FLAG
SmnX7 is partially rescued by SmnG210C.Tag:FLAG
SmnX7 is partially rescued by SmnUAS.Tag:FLAG/Scer\GAL4clh201
SmnX7 is partially rescued by Scer\GAL4NP2225/SmnUAS.Tag:FLAG
SmnX7 is partially rescued by Scer\GAL4elav.Switch.PO/SmnUAS.Tag:FLAG
SmnX7/Smnf01109 is partially rescued by SmnTag:FLAG
SmnX7/Smnf01109 is partially rescued by SmnT205I.Tag:FLAG
SmnX7 is not rescued by SmnΔ7S.v.Tag:FLAG
SmnX7 is not rescued by SmnS193I.ΔMGLR.v.Tag:FLAG
SmnX7 is not rescued by SmnS197P.ΔMGLR.v.Tag:FLAG
SmnX7 is not rescued by SmnY203C.Tag:FLAG
SmnX7 is not rescued by SmnY204R.ΔMGLR.v.Tag:FLAG
SmnX7 is not rescued by SmnY204R.v.Tag:FLAG
SmnX7 is not rescued by SmnM194R.Tag:FLAG
SmnX7 is not rescued by SmnG206S.Tag:FLAG
SmnX7 is not rescued by SmnG206S.Tag:FLAG
SmnX7 is not rescued by SmnY203C.Tag:FLAG/SmnM194R.Tag:FLAG
SmnX7 is not rescued by SmnY203C.Tag:FLAG/SmnG206S.Tag:FLAG
SmnX7 is not rescued by SmnM194R.Tag:FLAG
SmnX7 is not rescued by SmnG206S.Tag:FLAG
SmnX7 is not rescued by SmnY203C.Tag:FLAG
SmnX7 is not rescued by Scer\GAL4G14/SmnUAS.Tag:FLAG
SmnX7 is not rescued by SmnUAS.Tag:FLAG/Scer\GAL4VGlut1-OK371
SmnX7 is not rescued by SmnUAS.Tag:FLAG/Scer\GAL4RapGAP1-OK6
SmnX7 is not rescued by Scer\GAL4Gad1.3.098/SmnUAS.Tag:FLAG
SmnX7 is not rescued by SmnUAS.Tag:FLAG/Scer\GAL41003.3
SmnX7 is not rescued by SmnUAS.Tag:FLAG/Scer\GAL4ppk.1.9
SmnX7/Smnf01109 is not rescued by SmnAct5C.Tag:FLAG
Expression of one copy of SmnM194R.T:Zzzz\FLAG fails to rescue the larval lethality seen in homozygous SmnX7 mutants. The larvae are similar in size to SmnX7 mutants.
Expression of one copy of SmnY203C.T:Zzzz\FLAG fails to rescue the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnG206S.T:Zzzz\FLAG fails to rescue the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnD20V.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnF70S.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnG73R.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnI93F.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnV72G.T:Zzzz\FLAG overcomes the larval lethality seen in homozygous SmnX7 mutants but the resulting flies are pupal lethal.
Expression of one copy of SmnY107C.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnT205I.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnG210C.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Expression of one copy of SmnG210V.T:Zzzz\FLAG partially rescues the larval lethality seen in homozygous SmnX7 mutants.
Decreased muscle surface area, locomotor defects, increased inter-spike intervals and increased evoked excitatory postsynaptic potential (eEPSP) amplitude in SmnX7/SmnX7 third instar larvae are rescued by ubiquitous (Scer\GAL4da.PU), pan-neuronal (Scer\GAL4nSyb.PS) or cholinergic (Scer\GAL4ChAT.7.4) expression of SmnScer\UAS.T:Zzzz\FLAG; these phenotypes are not rescued when expression is driven by larval muscle-specific Scer\GAL4G14, glutamatergic Scer\GAL4VGlut-OK371, motor-neuron specific Scer\GAL4RapGAP1-OK6, GABAergic (Scer\GAL4Gad1.3.098), Scer\GAL41003.3 or Scer\GAL4ppk.1.9. Expression of SmnScer\UAS.T:Zzzz\FLAG with Scer\GAL4clh201 or Scer\GAL4NP2225 rescues the increased inter-spike intervals and increased eEPSP amplitude, partially rescues the decreased muscle surface area, but fails to rescue the locomotion defect in SmnX7/SmnX7 third instar larvae.
SmnScer\UAS.T:Zzzz\FLAG driven by Scer\GAL4elav.Switch.PO in the presence of RU486 rescues SmnX7/SmnX7 muscle size, locomotion (partially), inter-spike intervals and eEPSP defects if SmnScer\UAS.T:Zzzz\FLAG expression is induced immediately after hatching (if induced 48 or 96 hours after hatching rescue is partial apart from full rescue of eEPSP).
Expression of SmnT:Zzzz\FLAG in a Smnf01109/SmnX7 mutant background results in >70% rescue of lethality. The resulting adults are fertile with no apparent defects in flight or motility. Pupation and eclosion occurs a day later than in wild type controls. Expression of SmnT:Zzzz\FLAG also rescues the motility and burrowing defects seen in Smnf01109/SmnX7 mutant larvae.
Expression of SmnAct5C.T:Zzzz\FLAG fails to rescue the larval lethality seen in Smnf01109/SmnX7 mutants.
Expression of SmnT205I.T:Zzzz\FLAG fully rescues the larval lethality seen in Smnf01109/SmnX7 mutants. However lethality in these mutants occurs at the pupal stage, with only 25% of mutants eclosing as adults. Pupation and eclosion occurs a day later than in wild type controls. Expression of SmnT:Zzzz\FLAG also largely rescues the motility defects seen in Smnf01109/SmnX7 mutant larvae, whereas the burrowing defects are fully rescued.