Allele Dmel\spn-Ehls-03987
| General Information | |||
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| Symbol | Dmel\spn-Ehls-03987 | Species | D. melanogaster |
| Name | FlyBase ID | FBal0004296 | |
| Feature type | allele | Associated gene | Dmel\spn-E |
| Also Known As | spn-Ehls3987, hls3987 | ||
| Map ( GBrowse ) |
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| Allele class | hypomorphic allele - genetic evidence | ||
| Mutagen | P-element activity | ||
Recent Updates
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| Description |
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| FB2013_03 | |||
| FB2013_02 | |||
| All updates | Click here to see a list of all updates to this record from FB2010_08 and on. | ||
Nature of the Allele
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| Allele class | |||
| Mutagen | |||
| Mutations Mapped to the Genome | |||
Type Location Additional Notes References transposable element insertion site | |||
| Associated Sequence Data | |||
| DDBJ
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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 | |||
Phenotypic Data
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Phenotypic Class
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Phenotype Manifest In
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meiosis & nuclear chromosome meiosis & nuclear chromosome (with spn-E1) | |||
Detailed Description
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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. | |||
External Data
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| Linkouts | |||
Interactions
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Phenotypic Class
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Phenotype Manifest In
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Additional Comments
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Genetic Interactions
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Statement Reference | |||
Xenogenetic Interactions
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Statement Reference | |||
Complementation & Rescue Data
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| Comments | |||
Stocks
( 1 ) | |||
| Bloomington | |||
Notes on Origin
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| Discoverer | |||
Comments
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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. | |||
External Crossreferences & Linkouts
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| Other Crossreferences | |||
| Linkouts | |||
Synonyms & Secondary IDs
( 11 ) | |||
| Reported As | |||
| Symbol Synonym | fs(3)03987 fs(3)hls1 fs(3)hls3987 fs(3)hls03987 hlsP{lacZ}3987 spnE3987 spn-Ehls3987 spn-Ehls-03987 spnEhls3987 unnamed | ||
| Name Synonym | |||
| Secondary FlyBase IDs | |||
References
( 22 ) | |||
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Recent research papers ( 3 ) | |||
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Recent Updates
External Crossreferences & Linkouts