A Database of Drosophila Genes & Genomes

FB2013_03, released May 7th, 2013
 

Allele Dmel\Itp-r83Awc703

General Information
SymbolDmel\Itp-r83Awc703SpeciesD. melanogaster
NameFlyBase IDFBal0156338
Feature typealleleAssociated geneDmel\Itp-r83A
Also Known Asitprwc703
Map ( GBrowse ) GBrowse View Helpdetailed view FBal0156341 FBal0156345 FBal0156343 FBal0156349 FBal0156338 FBal0156348 FBal0156339
Allele classantimorphic allele - genetic evidence
Mutagenethyl methanesulfonate
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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
References
point mutation
comment=Site of nucleotide substitution in mutant inferred by FlyBase based on reported amino acid change.
evidence=experimental
na_change=G1361875A
pr_change=G2114E|Itp-r83A-PA,G2123E|Itp-r83A-PB
reported_na_change=G?A
reported_pr_change=G2117E
Associated Sequence Data
DDBJ /
EMBL /
GenBank
DNA sequence
Protein sequence
Name
 
UniProtKB/Swiss-Prot
UniProtKB/TrEMBL
Progenitor genotype
Nature of the lesion
Statement
Reference
Amino acid replacement: G2117E. Nucleotide substitution: G?A.
Cytology
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Statement
Reference
Itp-r83A[wc703]/Itp-r83A[ug3] animals have wing posture, flight and flight physiology defects.
The spontaneous firing rate seen in dorsal-longitudinal muscles of Itp-r83A[wc361]/Itp-r83A[wc703] adults is normal. These adults can be divided into fliers and non-fliers (assayed using a cylinder drop test). About 30% are non-fliers - exhibiting only brief rhythmic flight patterns that are usually not sustained beyond 5 seconds in response to stimulation with an air puff. In contrast, the non-fliers exhibit sustained flight patterns (>30seconds) in response to the same stimulus.
Itp-r83Awc703/Itp-r83Aug3 flies show a "down-turned" wing phenotype. Itp-r83Awc703/Itp-r83Awc361 flies show a significant degree of flightlessness but show normal wing posture. Indirect flight muscles of wild-type flies can express short bursts of electrical activity that are associated with cleaning behavior. Itp-r83Awc703/Itp-r83Aug3 flies show an increase in spontaneous firing from these muscles, which is unrelated to cleaning behavior. The indirect flight muscles of these mutants fail to produce firing patterns in response to an air puff, which occurs in wild-type muscles.
Maintenance of adaptation to a butanol source in Itp-r83Awc703 mutants is strongly defective, and recovery to 50% of preadaptation response occurs in less than one-third of the time taken in wild-type. The dominant phenotype of Itp-r83Awc703 is further accentuated by the presence of the recessive alleles Itp-r83Awc361 and Itp-r83Aug3. This suggests that the Itp-r83A dosage affects recovery from adaptation.
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Statement
Reference
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361 has flightless | partially phenotype, enhanceable by Plc21Ck31911/Plc21C[+]
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Statement
Reference
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361, Plc21Ck31911/Plc21C[+] has flightless | partially phenotype, suppressible by Ca-P60A[+]/Ca-P60AKum170
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361, Plc21Ck31911/Plc21C[+] has neurophysiology defective phenotype, suppressible by Ca-P60A[+]/Ca-P60AKum170
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361 has flightless | partially phenotype, suppressible by Ca-P60A[+]/Ca-P60AKum170
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Statement
Reference
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hideEnhanced by
Statement
Reference
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361 has wing phenotype, enhanceable by Plc21Ck31911/Plc21C[+]
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Statement
Reference
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361, Plc21Ck31911/Plc21C[+] has wing phenotype, suppressible by Ca-P60A[+]/Ca-P60AKum170
Gα49B[+]/Gαq221c, Itp-r83Awc703/Itp-r83Awc361 has wing phenotype, suppressible by Ca-P60A[+]/Ca-P60AKum170
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Statement
Reference
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Statement
Reference
The viability of Itp-r83A[wc703]/Itp-r83A[wc361] animals is unaffected by sl[1]/sl[1] or sl[2]/sl[2]. It is also unaffected by Gα49B[221c]/+, but the resulting adults have abnormal wing posture, an enhanced incidence of flight defects and mild endogenous hyperactivity of spontaneous firing recorded from the dorsal longitudinal muscles. Wing posture and flight defect phenotypes are enhanced and viability is reduced if Plc21C[k31911]/+ is also present, but partially suppressed by Gα49B[Scer\UAS.cRa]; Scer\GAL4[Ddc.PL] and completely or largely suppressed by Ca-P60A[Kum170]/+, even when Plc21C[k31911]/+ is also present.
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Statement
Reference
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Complements
Rescued by
Partially rescued by
Not rescued by
Comments
Complete rescue of the altered wing posture is seen in Itp-r83A[Scer\UAS.cVa]; Scer\GAL4[Ilp2.PR]/+; Itp-r83A[wc703]/Itp-r83A[ug3] animals. Flight ability is also rescued significantly in these flies. The delivery of an air puff stimulus to Itp-r83A[wc703]/Itp-r83A[ug3] flies expressing Scer\GAL4[Ilp2.PR]-driven Itp-r83A[Scer\UAS.cVa] leads to rhythmic generation of action potentials, but in most flies the air puff response lasts for a shorter period of time compared with the control flies.
Rescue of Itp-r83Awc703/Itp-r83Aug3 flies by expression of Itp-r83AScer\UAS.cVa under the control of Scer\GAL4hs.PB following a heat shock shows that expression during early pupal development is sufficient to rescue flight behavior and physiology, while expression after adult emergence is ineffective in rescuing flight.
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hide Synonyms & Secondary IDs ( 3 )
Reported As
Symbol Synonym
Itp-r83Awc703
 
Name Synonym
Secondary FlyBase IDs
hide References ( 6 )
Research paper
Agrawal et al., 2010, J. Neurosci. 30(4): 1301--1313
Inositol 1,4,5-trisphosphate receptor and dSTIM function in Drosophila insulin-producing neurons regulates systemic intracellular calcium homeostasis and flight. [FBrf0209847]
Banerjee et al., 2006, J. Neurosci. 26(32): 8278--8288
Compensation of inositol 1,4,5-trisphosphate receptor function by altering sarco-endoplasmic reticulum calcium ATPase activity in the Drosophila flight circuit. [FBrf0194925]
Banerjee et al., 2004, J. Neurosci. 24(36): 7869--7878
Loss of flight and associated neuronal rhythmicity in inositol 1,4,5-trisphosphate receptor mutants of Drosophila. [FBrf0180425]
Joshi et al., 2004, Genetics 166(1): 225--236
Genetic dissection of itpr gene function reveals a vital requirement in aminergic cells of Drosophila larvae. [FBrf0174703]
Srikanth et al., 2004, Biophys. J. 86(6): 3634--3646
Functional properties of the Drosophila melanogaster inositol 1,4,5-trisphosphate receptor mutants. [FBrf0179452]
Deshpande et al., 2000, J. Neurobiol. 43(3): 282--288
The inositol 1,4,5-trisphosphate receptor is required for maintenance of olfactory adaptation in Drosophila antennae. [FBrf0128448]