Allele Dmel\sina3
| General Information | |||
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| Symbol | Dmel\sina3 | Species | D. melanogaster |
| Name | FlyBase ID | FBal0015667 | |
| Feature type | allele | Associated gene | Dmel\sina |
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| Allele class | amorphic allele - genetic evidence | ||
| Mutagen | ethyl methanesulfonate | ||
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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 deletion comment=Deletion of 308 bp; coordinates determined from Figure 5B of FBrf0051381 and differ from the coordinates listed in Table 1. evidence=experimental | |||
| 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 | ||
| Cytology | |||
Phenotypic Data
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Phenotypic Class
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Phenotype Manifest In
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adult abdominal segment 3 & chaeta (with sina2) adult abdominal segment 3 & microchaeta (with sina2) adult abdominal segment 3 & tormogen cell | supernumerary (with sina2) adult abdominal segment 3 & trichogen cell | supernumerary (with sina2) adult abdominal segment 4 & chaeta (with sina2) adult abdominal segment 4 & microchaeta (with sina2) adult abdominal segment 4 & tormogen cell | supernumerary (with sina2) adult abdominal segment 4 & trichogen cell | supernumerary (with sina2) mesothoracic tergum & chaeta (with sina2) mesothoracic tergum & microchaeta (with sina2) mesothoracic tergum & tormogen cell | supernumerary (with sina2) mesothoracic tergum & trichogen cell | supernumerary (with sina2) | |||
Detailed Description
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Statement Reference Mutants show a double- bristle phenotype. 41% of the notal microchaetae and 62% of the microchaetae on abdominal segments 3 and 4 are missing in sina2/sina3 flies. 17.2% of bristles on the notum are duplicated, having 2 hairs emerging from 2 sockets or a fused socket. 44.5% of bristles on abdominal segments 3 and 4 are duplicated (2 hairs/2 sockets) and 20.9% show other defects (including 1 hair surrounded by 2-3 sockets, and 2 socket or 4 socket clusters without shafts). Embryonic development, including development of the es organs, is normal in sina2/sina3 animals. Amorph based on the phenotypes of hemizygous <up>sina1/Df(3L)st-g18</up> versus that of homozygous flies. This allele probably represents complete loss of function of the sina gene. In the ommatidia the R7 photoreceptor cell is always missing, the R7 precursor adopting a cone cell fate, and sometimes one or two cells of the R1-R6 class are missing as well. The normal trapezoidal arrangement of the R1-R6 cells is disorganised, and the R8 cell is often found in uncharacteristic positions. Other adult sensory organs are also affected: sensory bristles distributed over the body surface are frequently missing, with neither the cuticular bristle sheath nor the socket being present, affected sensory organs including the microchaetae and macrochaetae of the head, notum, abdomen and wing margin, and the stout and slender bristles of the anterior wing margin. The phenotype is most severe with bristles located on the abdomen, where often only a minor fraction of the normal number of bristles are present. Also, many of the remaining bristles have two or three sheaths emerging from a single socket. There is also a 10-fold reduction in adult lifespan, and adult behaviour is generally lethargic and uncoordinated. Neither males nor females are fertile, although they produce morphologically normal sperm and eggs, respectively. | |||
External Data
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Interactions
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Phenotypic Class
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Enhanced by | |||
Statement Reference | |||
Suppressed by | |||
Statement Reference | |||
Enhancer of | |||
Statement Reference | |||
NOT Enhancer of | |||
Statement Reference | |||
Suppressor of | |||
Statement Reference | |||
NOT Suppressor of | |||
Statement Reference | |||
Phenotype Manifest In
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Enhanced by | |||
Statement Reference sina3/sina2 has photoreceptor cell R1 | third instar larval stage phenotype, enhanceable by msi1/msi1 sina3/sina2 has photoreceptor cell R6 | third instar larval stage phenotype, enhanceable by msi1/msi1 sina3/sina2 has photoreceptor cell R7 | third instar larval stage phenotype, enhanceable by msi1/msi1 | |||
Suppressed by | |||
Statement Reference msi1, sina3/sina2 has photoreceptor cell R1 | third instar larval stage phenotype, suppressible by ttkGD4414/Scer\GAL4lz-gal4 msi1, sina3/sina2 has photoreceptor cell R6 | third instar larval stage phenotype, suppressible by ttkGD4414/Scer\GAL4lz-gal4 msi1, sina3/sina2 has photoreceptor cell R7 | third instar larval stage phenotype, suppressible by ttkGD4414/Scer\GAL4lz-gal4 | |||
Enhancer of | |||
Statement Reference | |||
NOT Enhancer of | |||
Statement Reference | |||
Suppressor of | |||
Statement Reference sina3 is a suppressor of phenotype of phylhs.sev | |||
NOT Suppressor of | |||
Statement Reference | |||
Other | |||
Statement Reference | |||
Additional Comments
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Genetic Interactions
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Statement Reference Double mutants of sina2/sina3 with msi1 show a synergistic, not additive, eye phenotype. Ommatidial arrays are disturbed, eyes consequently roughened and ommatidia do not contain more than five rhabdomeres. Cone cell array is disturbed. 30% of the ommatidia of sina2 msi1 ttkosn/sina3 msi1 show the normal number and arrangement of photoreceptor cells. The cone cell defects of sina2 msi1/sina3 msi1 are also suppressed by ttkosn. The phylGMR.PC eye phenotype is completely suppressed in a sina2/sina3 background; the eyes are normal, except for the lack of R7 photoreceptor cells due to the absence of sina function. sina2/sina3 flies carrying both phylGMR.PC and ttk88.GMR.T:Hsap\MYC have very disrupted eyes, similar to those of flies carrying ttk88.GMR.T:Hsap\MYC alone. | |||
Xenogenetic Interactions
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Statement Reference | |||
Complementation & Rescue Data
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| Comments | |||
Stocks
( 3 ) | |||
| Bloomington | |||
| Kyoto | 108422 | ||
Notes on Origin
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| Discoverer | |||
Comments
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No interaction with P{sev-svp1} or P{sev-svp2} exists. | |||
External Crossreferences & Linkouts
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| Other Crossreferences | |||
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Synonyms & Secondary IDs
( 3 ) | |||
| Reported As | |||
| Symbol Synonym | Sina3 sinaA16 | ||
| Name Synonym | |||
| Secondary FlyBase IDs | |||
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References
( 23 ) | |||
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Recent research papers (0)
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| All research papers listed in FlyBase were published before 2011 | |||

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External Crossreferences & Linkouts