Nucleotide substitution: G?A. The lesion creates a novel 3' splice acceptor site within an intron and leads to incorrect splicing of the transcript, which introduces a stop codon 67bp from the splice junction.
G8830819A
G?A
The mutation creates a novel 3' splice acceptor site within an intron and leads to incorrect splicing of the transcript, which introduces a stop codon 67bp from the splice junction.
Mutant stage 16 embryos show a severe myoblast fusion defect in the dorsal pharyngeal muscle.
Mutant embryonic garland cells lack diaphragms and lacunae, and instead the nephrocyte surface contains frequent, small patches of electron-dense subcortical material.
snsXB3 embryos do not exhibit actin foci in founder cell-fusion competent myoblast development, leading to defects in fusion.
The extent of myoblast fusion in snsXB3 mutant embryos is significantly reduced compared to wild type.
snsXB3 has muscle founder cell | embryonic stage phenotype, enhanceable by hbs2593
hbs2593, snsXB3 has muscle founder cell | embryonic stage phenotype, non-suppressible by Scer\GAL4Mef2.PR/sns20-5.UAS.Tag:HA
hbs2593, snsXB3 has muscle founder cell | embryonic stage phenotype, non-suppressible by hbsΔICD.UAS.Tag:HA/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 has embryonic myoblast phenotype, non-suppressible by Scer\GAL4how-24B/snsUAS.Tag:GPI(Fas1)
sns[+]/snsXB3 is an enhancer of embryonic myoblast phenotype of hbs459/hbs2593
snsXB3 is a suppressor of embryonic myoblast phenotype of hbs459/hbs2593
snsXB3 is a suppressor of embryonic midgut chamber 1 phenotype of hbs459/hbs2593
snsXB3 is a suppressor of visceral muscle primordium phenotype of hbs459/hbs2593
snsXB3 is a suppressor of presumptive embryonic/larval muscle system phenotype of hbs459/hbs2593
hbs459/hbs2593, snsXB3/snsD1 has muscle founder cell | embryonic stage phenotype
hbs2593, snsXB3 has embryonic garland cell phenotype
There is a lower number of eve-expressing DA1 founder cells, Kr-expressing DO1 founder cells, and nau-expressing VA1 founder cells in snsXB3 hbs2593 double mutant embryos than in snsXB3 embryos - these founder cells remain mononucleate in most hemi-segments.
snsXB3, hbs2593 / snsD1, hbs459 embryos have a relatively low number of eve-expressing DA1 founder cells - fewer than in snsXB3 embryos.
The limited number of unfused myoblasts in hbs2593/hbs459 embryos increases when embryos are also heterozygous for snsXB3.
Scer\GAL4Mef2.PR-mediated expression of sns20-5.Scer\UAS.T:Ivir\HA1 or hbsΔICD.Scer\UAS.T:Ivir\HA1 fails to rescue formation of eve-positive DA1 or Kr-positive DO1 bi- and tri-nucleate muscle precursors in snsXB3, hbs2593 double mutant embryos.
Almost 60% of garland cell nephrocytes (GCNs) remain mononucleate at early stage 16 in snsXB3 hbs2593 double mutant embryos (in contrast to wild-type embryos where 99.6% of the GCNs are binucleate at this stage). The GCNs of stage 16 snsXB3 hbs2593 double mutant embryos are disorganised, misshapen and more loosely associated than in wild-type embryos.
Expression of Fas1::snsGPI.Scer\UAS under the control of Scer\GAL4how-24B fails to rescue the mutant phenotype of snsZF1.4/snsXB3 embryos. Fusion competent myoblasts do not appear to migrate towards the founder cells in these embryos.
snsXB3/snsZF1.4 is rescued by Scer\GAL4Mef2.PR/snsUAS.Tag:HA
snsXB3/snsZF1.4 is rescued by Scer\GAL4Mef2.PR/sns5xPDZ.UAS.Tag:HA
snsXB3/snsZF1.4 is rescued by snsA17.UAS.Tag:HA/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 is rescued by snsΔ1279-1482.UAS/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 is rescued by Scer\GAL4Mef2.PR/snsF6.UAS.Tag:HA
snsXB3/snsZF1.4 is rescued by snsF11.UAS.Tag:HA/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 is rescued by Scer\GAL4how-24B/snsUAS.cGa
snsXB3/snsZF1.4 is partially rescued by Scer\GAL4Mef2.PR/snsΔ1113-1232.UAS.Tag:HA
snsXB3/snsZF1.4 is partially rescued by snsΔ1164-1278.UAS.Tag:HA/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 is partially rescued by snsF14.UAS.Tag:HA/Scer\GAL4Mef2.PR
snsXB3/snsZF1.4 is partially rescued by Scer\GAL4Mef2.PR/sns2xPXXP.UAS
snsXB3/snsZF1.4 is not rescued by Scer\GAL4Mef2.PR/sns20-5.UAS.Tag:HA
snsXB3/snsZF1.4 is not rescued by Scer\GAL4Mef2.PR/snsΔ1113-1278.UAS.Tag:HA
snsXB3/snsZF1.4 is not rescued by snsΔΔ1113-1163.1233-1278.UAS.Tag:HA/Scer\GAL4Mef2.PR