FB2024_03 , released June 25, 2024
Allele: Dmel\hbP1only
Open Close
General Information
Symbol
Dmel\hbP1only
Species
D. melanogaster
Name
FlyBase ID
FBal0117499
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
hbP1
Key Links
Transgenic product class
Nature of the Allele
Transgenic product class
Progenitor genotype
Carried in construct
Cytology
Description

Intron between P1 promoter and the hb coding region, which includes the P2 promoter, has been removed, leaving the hb coding region to be expressed from the P1 promoter.

Allele components
Component
Use(s)
Regulatory region(s)
Encoded product / tool
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
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

hbP1only/hb15 transheterozygotes present a significant decrease in the number of dividing neuroblasts during stages 13 and 14 of embryogenesis and present a significant decrease in the number of dividing neuroblast daughters during stage 13, but not stage 14, of embryogenesis, as compared to controls; these embryos, however, show no significant differences in the number of neuroblasts, as compared to controls.

In wild-type, neuroblast NB7-1 generates five U motoneurons. Overexpression of hbScer\UAS.T:Hsim\VP16 in hb15/hbP1only mutant NB7-1 under the control of Scer\GAL4en-e16E produces an average of six U neurons per hemisegment.

In wild-type, neuroblast NB7-1 generates five U motoneurons. Overexpression of hbScer\UAS.cWa in hb15/hbP1only mutant NB7-1 under the control of Scer\GAL4en-e16E produces an average of 12 U neurons per hemisegment.

External Data
Interactions
Show genetic interaction network for Enhancers & Suppressors
Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
Statement
Reference
Xenogenetic Interactions
Statement
Reference
Complementation and Rescue Data
Partially rescues
Comments

When one copy of hbP1only is supplied zygotically (via the father) to hb12/hb15 embryos the A7/A8 fusion mutant phenotype is rescued. When one copy of hbP1only is supplied maternally both the A7/A8 and anterior labial and T1 segments are rescued; only T2 and T3 remain unrescued. When the maternal contribution of hbP1only is increased (three copies) 30% rescued embryos show only the maternal rescue of labial and T1 segments. Most show additional rescue of thoracic segments of mostly T3 character. 5-10% of embryos show rescue of all thoracic segments.

Images (0)
Mutant
Wild-type
Stocks (0)
Notes on Origin
Discoverer
Comments
Comments

Removal of the bcd-dependent P2 promoter uncouples the direct link between the bcd and hb morphogen systems.

External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
References (8)