Dmel\P{PZ}ttv00681b Insertion
| General Information | |||
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| Symbol | Dmel\P{PZ}ttv00681b | Species | D. melanogaster |
| Name | FlyBase ID | FBti0005174 | |
| Feature type | transposable_element_insertion_site | ||
| Description | |||
| Inserted element | P{PZ} | Expression data | lacZ reporter |
| Affected gene(s) | Ecol\lacZ, ttv | Viability / fertility | |
| Causes allele(s) | Ecol\lacZttv-00681b, ttv00681b | Stock availability | 1 publicly available |
| LINE ID | l(2)00681 | ||
| Genomic Location | |||
| Chromosomal location | 2R ( 51A7-51B4 ) | Sequence location | |
| Member of Large Scale Dataset(s) | |||
| Dataset |
A set of mutant stocks derived by insertional mutagenesis using the P-element construct P{PZ}; most lines have a lethal or sterile phenotype. The P{PZ} construct carries a ry[+] visible marker, Ecol\lacZ enhancer trap sequences, and bacterial sequences that allow plasmid rescue.
Insertion lines from this collection were assessed for inclusion in the Gene Disruption Project collection.
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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. | ||
Detailed Mapping Data
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| Chromosome (arm) | |||
| Sequence Location | |||
| Orientation | |||
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Cytological location
(computed by FlyBase) |
51A7-51B4 ( near gene of known cytology )
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Cytological location
(reported) |
51B1-51B5 (in situ hybridization reported)
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Comments concerning
location |
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Sequence Data
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| Flanking sequence | |||
Inserted Element
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| Construct | P{PZ} | ||
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Location-dependent
role |
lacZ enhancer trap
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| Size | 14.545Kb | ||
| Associated alleles | |||
| Molecular map |
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Affected Gene(s)
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Insertion may
affect gene |
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Alleles and Phenotypes
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| Causes alleles |
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Lethality
References
lethal
lethal | embryonic stage | fully | rescuable maternal effect
lethal | pupal stage
lethal | recessive
viable
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Sterility
References
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Phenotype Manifest In
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anterior fascicle & bouton
bouton
cuticle
denticle | germline clone | maternal effect
denticle belt
embryonic/first instar larval cuticle | germline clone
embryonic/first instar larval cuticle | germline clone | maternal effect
eye | somatic clone
wing disc
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Detailed Description
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Statement
Reference
ttv[00681b] Ext2[1.8.1] double heterozygotes exhibit increased median survival time compared to controls when infected with group B Streptococcus
(both wild-type and GAG-binding impaired mutants) and lower colony counts after infection.
ttv[00681b] Ext2[1.8.1] double heterozygotes exhibit reduced susceptibility to infection with the A909 strain of group B streptococcus.
Expression of ttv[Scer\UAS.T:Hsap\MYC] with Scer\GAL4[G14] leads to rescue of ttv[00681b] mutant larvae to adulthood or late pupal stages. The number of boutons per unit muscle area and bouton budding are increased
to normal levels.
Expression of ttv[Scer\UAS.T:Hsap\MYC] with Scer\GAL4[elav-C155] improves viability of ttv[00681b] mutant larvae. The number of boutons per unit muscle area are increased to normal levels while bouton budding is elevated
above wild-type levels.
Expression of ttv[Scer\UAS.T:Hsap\MYC] with Scer\GAL4[da.G32] fails to improve viability of ttv[00681b] mutant larvae but rescues the abnormally elevated mEJP frequency (but not the EJP amplitude) found in these larvae. The number
of boutons relative to muscle area is significantly reduced compared with ttv[00681b] mutants.
ttv[00681b] mutants exhibit morphological changes in somatic musculature, with mitochondrial distribution affected and altered Golgi
organisation.
In response to nerve stimulation, ttv[00681b] mutants exhibit a significantly increased EJP compared with wild-type or heterozygous control larvae (20-25% increase). Spontaneous
release events (mEJPs) are substantially reduced compared with heterozygous or wild-type controls, suggesting that loss of
Heparan Sulfate biosynthesis affects the spontaneous vesicle release probability in the motoneuron. Post-synaptic mEJP amplitudes
are significantly elevated in ttv[00681b] mutants relative to heterozygous or wild-type controls.
ttv[00681b] mutant larval exhibit locomotion defects, with a significantly reduced number of peristaltic contractions per minute.
ttv[00681b] mutant synapses are reduced in size and have significantly fewer boutons per unit muscle area compared with controls. ttv[00681b] motoneurons are bigger than normal, with a reduced number of \'buds\'. ttv[00681b] synapses consist primarily of large boutons without any buds.
ttv[00681b] mutants exhibit an increase in activity-dependent endocytosis at the neuromuscular junction.
ttv00681b mutants display ISNb bypass at a similar rate to wild-type embryos.
Expression of hhScer\UAS.cIa with Scer\GAL4en-e16E in ttv00681b germ-line clone embryos doesn\'t rescue naked cuticle formation, but does increase denticle diversity in the ventral cuticle:
denticles corresponding to row 2,3,4, and 5 types are all present.
ttv00681b germ-line clone embryos do not display any naked cuticle formation, although the resulting denticle lawn has some diversity.
ttvScer\UAS.T:Hsap\MYC with Scer\GAL4wg.PM completely rescues the cuticle phenotype of ttv00681b germ-line clone embryos.
Mosaic flies with eyes homozygous for ttv00681b (clones generated using the "eyFLP" system) have small eyes.
Homozygous mutant larvae have abnormally large boutons at the terminal arbor synapses of the ISN.
Homozygous larvae have a marked reduction in heparan sulphate levels, to at least 10-fold less than wild type. Heterozygotes
show a slight reduction in heparan sulphate levels. Chondroitin sulphate is unaffected by ttv00681b.
ttv00681b/Df(2R)trix embryos derived from homozygous female germline clones show absence of naked cuticle.
Germline clones produce eggs with patterning defects: unrescued embryos exhibit mirror image duplication of denticle belts,
rescued embryos are wild type. Lethality occurs during the larval and pupal stages.
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Expression Data
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| Reporter Expression | |||
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distribution deduced from reporter
Stage
Tissue/Position (including subcellular localization)
Reference
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| Additional Information | |||
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Statement
Reference
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| Marker for | |||
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Reflects
expression of |
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Reporter construct
used in assay |
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External Images
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| FlyView (LinkOut) | |||
Data on Genetic Line
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| Line ID |
l(2)00681
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| Origin as a multiple insertion line | |||
Progenitor(s) within the Genome
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Related Aberration or Balancer
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| Aberration | |||
| Balancer | |||
Stocks
( 1 )
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| Bloomington | |||
Linkouts
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Synonyms & Secondary IDs
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| Reported As | |||
| Symbol Synonym |
00681b
P{PZ}l(2)0068100681
P{PZ}ttv00681
P{PZ}ttv00681b
(FlyBase, 1992-, )
P{ry+t7.2=PZ}l(2)0068100681
ttv00681b
unnamed
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| Secondary FlyBase IDs | |||
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References
( 26 )
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| Generate a list of | |||
| List References by type |
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Recent research papers ( 1 )
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Recent Updates
