A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\spn-Ehls-03987

General Information
SymbolDmel\spn-Ehls-03987SpeciesD. melanogaster
NameFlyBase IDFBal0004296
Feature typealleleAssociated geneDmel\spn-E
Also Known Asspn-Ehls3987, hls3987
Map ( GBrowse ) Untitled Document detailed view FBti0009068_1 FBti0009068_2 FBti0040897 FBti0067085 FBti0048302 FBti0126109_2 FBti0126109_1 FBti0046073
Allele classhypomorphic allele - genetic evidence
MutagenP-element activity
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Description
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FB2013_03
FB2013_02
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Allele class
Mutagen
Mutations Mapped to the Genome
Type
Location
Additional Notes
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Associated Sequence Data
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
UniProtKB/Swiss-Prot
UniProtKB/TrEMBL
Progenitor genotype
Nature of the lesion
Statement
Reference
P{PZ} insertion within the coding sequences.
Caused by insertion
Cytology
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meiosis & nuclear chromosome
meiosis & nuclear chromosome (with spn-E1)
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Statement
Reference
Suppressor of repeat-induced silencing, as seen at heterochromatic tandem arrays of insertions of the P{lacW} transposon.
Nuage particles are lost in spn-E1/spn-Ehls-03987 nurse cells and the perinuclear nuage is smoother than normal.
Homozygotes and trans-heterozygotes with spn-E1 show an increased rate of non-disjunction in all except the small 4th chromosome. There are also substantial biases in recovery of reciprocal sperm classes. Nullo-XY sperm are recovered in considerable excess over the reciprocal XY sperm class. Also a weaker bias in favour of normal X-bearing sperm is seen.
Females lay few eggs and they appear to be unfertilised. Oocyte is not located at the usual posterior position within the egg, 95% of late stage egg chambers were ventralised and a small number of the egg chambers are degenerating. Heterozygotes with Df(3R)sbd105 (spn-E-) exhibit mislocalised oocyte phenotype and degenerating egg chambers. Microtubule structure is disrupted in the egg chambers due to the inappropriate formation of an extensive microtubule meshwork during stage 8 to 9 (not premature cytoplasmic streaming).
10% of eggs fail to localise the oocyte to the posterior of the egg chamber, 95% eggs have variable fused filaments.
Affects the early anteroposterior process in oogenesis. 5-10% of stage 2 to 10 eggs produced by homozygous female have mislocalised oocytes. 95% late stage egg chambers have a ventralised phenotype with only one respiratory appendage on the dorsal midline or two shortened appendages. No eggs hatch.
female-sterile 10% of eggs fail to localize oocyte to posterior of egg chamber; 95% of eggs have variable fused filaments.
 
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Comments
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Bloomington
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Discoverer
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Excision of the P{PZ} element produces a fully fertile phenotype demonstrating the insertion to be responsible for the female sterility.
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Reported As
Symbol Synonym
fs(3)hls1
 
fs(3)hls3987
 
fs(3)hls03987
 
hlsP{lacZ}3987
spnEhls3987
Name Synonym
Secondary FlyBase IDs
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hide Recent research papers ( 3 )
Anand and Kai, 2012, EMBO J. 31(4): 870--882
The tudor domain protein Kumo is required to assemble the nuage and to generate germline piRNAs in Drosophila. [FBrf0217541]
Klenov et al., 2011, Proc. Natl. Acad. Sci. U.S.A. 108(46): 18760--18765
Separation of stem cell maintenance and transposon silencing functions of Piwi protein. [FBrf0216776]
Shpiz et al., 2011, Nucleic Acids Res. 39(20): 8703--8711
Mechanism of the piRNA-mediated silencing of Drosophila telomeric retrotransposons. [FBrf0216525]