FB2024_03 , released June 25, 2024
Allele: Dmel\dppe90
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General Information
Symbol
Dmel\dppe90
Species
D. melanogaster
Name
FlyBase ID
FBal0031065
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Amino acid replacement: F496I.

Mutation falls in the C-terminal ligand region of the dpp protein.

Nucleotide substitution: T2673A.

Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
Nucleotide change:

T2458279A

Reported nucleotide change:

T2673A

Amino acid change:

F496I | dpp-PA; F496I | dpp-PB; F496I | dpp-PC; F496I | dpp-PE

Reported amino acid change:

F496I

Variant Molecular Consequences
Associated Sequence Data
DNA sequence
Protein sequence
 
Expression Data
Reporter Expression
Additional Information
Statement
Reference
 
Marker for
Reflects expression of
Reporter construct used in assay
Human Disease Associations
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
References
Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

dppe90 homozygotes, kept at 18'C until 42 hours APF (equivalent to 20 hours APF at 25'C) and then raised to 25'C for the proceeding 22 hours have slightly abnormal arrangments of inter-ommatidial cells including: 3's which fail to establish a correct position as a vertex of the hexagon; 2'/3's abnormally arranged around sensory bristles; aberrant bristle-bristle contacts.

GA28a. Genetic interaction (class, effect) [CV] *S :

dppe90/dpphr56 males raised at 18oC to eclosion and then shifted to 29oC, show no significant loss of male germline stem cells after 1 week.

Females carrying temperature sensitive combinations dppe90/dpphr56 or dpphr4/dpphr56 after shifting to the restrictive temperature for one week show 40-50% of germaria that are significantly smaller than wild type. The effect is more pronounced in older females. Stem cell number is reduced, stem cells have differentiated into cysts. Some effect on egg chamber budding is seen.

Embryos show cuticular holes, disorganization of the head skeleton, internalization of the seventh and eighth abdominal segments and the filzkorper. dppe90 shows a temperature sensitive embryonic lethality: percentage embryonic lethality drops from 29% at 25oC to 15% at 18oC. Temperature sensitivity is evident in denticle pattern as well as survival.

Homozygous and transheterozygous embryos were examined with respect to 25 cuticular markers, results demonstrate a graded requirement for dpp along the dorso-ventral axis.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Suppressor of
Statement
Reference
Phenotype Manifest In
Enhanced by
Statement
Reference

dppe90 has phenotype, enhanceable by tld14

Suppressor of
Statement
Reference

dppe90/dpp[+] is a suppressor | partially of germarium phenotype of PscGD4481, Scer\GAL4C587, Su(z)2GD16388

Other
Additional Comments
Genetic Interactions
Statement
Reference

Simultaneous expression of both PscGD4481 and Su(z)2GD16388 under the control of Scer\GAL4C587 (together with tub-Gal80[ts] to limit the time of expression to adulthood) results in tumorigenic accumulation of spectrosome containing germline stem cell-like (GSC-like) cells (which increase in number with the time of expression) in female germaria; this accumulation of GSC-like cells is significantly suppressed by combination with a single copy of dppe90.

bamhs.PO animals cultured at 18oC and heat shocked as late stage pupae (37oC, 4 times for 2 hours each with an 8-12 hour interval) produce adult females with agametic germaria. If these animals also carry the temperature sensitive allelic combination dpphr56/dppe90, and are shifted to 29oC (the non-permissive temperature) for 10 days, the resulting agametic germaria contain only slightly less follicle cells than controls (bamhs.PO only).

dppe90/dpphr56; gbbD4/+ males raised at 18oC to eclosion and then shifted to 29oC for one week have an average of 5.6 germ-line stem cells per testis, compared to 8.6 in gbbD4/+.

Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Comments
Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer

Nusslein-Volhard.

Comments
Comments

Based on considerations of degree of dominant lethality, dpp alleles can be placed in an allelic series. Progressing from weakest to most severe the series is: dppe87 < dppe90 < dpphr56 < dpphr4 < dpphr92 < dpphr27 < dpphr93 < dppH94 < dppH95 < dppH96 = dppH91 = dppH46.

dppe90 shows interallelic complementation at 18oC with dpphr56 and dpphr4.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (3)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (12)