A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\psidin55D4

General Information
SymbolDmel\psidin55D4SpeciesD. melanogaster
NameFlyBase IDFBal0277250
Feature typealleleAssociated geneDmel\psidin
Allele class
Mutagenethyl methanesulfonate
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Description
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FB2013_03
FB2013_02
Controlled Vocabulary Terms
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Allele class
Mutagen
Mutations Mapped to the Genome
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References
Associated Sequence Data
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
UniProtKB/Swiss-Prot
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Progenitor genotype
Nature of the lesion
Statement
Reference
Amino acid replacement: K471@.
Amino acid replacement: ?471@.
Cytology
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Statement
Reference
Homozygous olfactory receptor neuron (ORN) clones result in complete loss of the Or33c and Or42a-expressing ORNs and a mild reduction in cell number of the Or67d, Or22a and Or59c ORNs. Homozygous ORN clones result in defects in glomerulus targeting. Mutant Or59c ORNs show a strong mistargeting phenotype. Neurons in primary neuron cultures derived from mutant embryos have significantly smaller lamellipodia and significantly longer neurites compared to wild-type controls.
Homozygous border cells show defects in migration: many of the mutant cells show no migration at all, and more than 80% of mutant clusters fail to reach the oocyte by stage 10. Heterozygous border follicle cells have shorter actin-rich protrusions than controls.
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Statement
Reference
psidin55D4/psidin[+], tsr1/tsrntf has lethal phenotype
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Statement
Reference
The reduction in lamellipodia size and increase in neurite length which is seen in neurons in primary neuron cultures derived from psidin[55D4] embryos are suppressed if the embryos are also mutant for Tm1[ZCL0722]. psidin[55D4] Tm1[ZCL0722] double mutant Or59c olfactory receptor neuron (ORNs) show a marked reduction in the penetrance and severity of axonal targeting defects compared to psidin[55D4] single mutant ORNs, but the reduction in the number of Or59c ORNs seen in psidin[55D4] single mutant ORNs is not rescued in the double mutants.
Border follicle cells simultaneously homozygous for both Tm1[ZCL0722] and psidin[55D4] show less severe migration defects than single mutant border follicle cells.
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Fails to complement
Rescued by
Comments
Expression of psidin[Scer\UAS.cKa] under the control of Scer\GAL4[slbo.2.6] rescues the migration defects seen in homozygous psidin[55D4] border cells. Expression of psidin[Scer\UAS.cKa] under the control of Scer\GAL4[Act.PU] rescues the lethality of psidin[55D4]/psidin[85D1] animals.
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Bloomington
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Research paper
Stephan et al., 2012, J. Neurosci. 32(46): 16080--16094
Drosophila Psidin Regulates Olfactory Neuron Number and Axon Targeting through Two Distinct Molecular Mechanisms. [FBrf0220017]
Kim et al., 2011, Genes Dev. 25(7): 730--741
Psidin, a conserved protein that regulates protrusion dynamics and cell migration. [FBrf0213388]