FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\pb2
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General Information
Symbol
Dmel\pb2
Species
D. melanogaster
Name
FlyBase ID
FBal0013506
Feature type
allele
Associated gene
Dmel\pb
Associated Insertion(s)
Carried in Construct
Key Links
Genomic Maps

Allele class

amorphic allele - genetic evidence

Mutagen
Nature of the Allele
Allele class

amorphic allele - genetic evidence

(Cribbs et al., 1992)
Mutagen
gamma ray
Progenitor genotype
Cytology

Polytene chromosomes normal.

Description

Deletion of nucleotides G1120 through A1124, plus nucleotide substitution T1220C (coordinates of the lesions are the position in the 2-μ-4a spliced form of pb). This results in a frameshift at amino acid residue 374, producing a stop codon at residue 398.

(Tayyab et al., 2004)
Mutations Mapped to the Genome
Curation Data
Type
Location
Additional Notes
References
deletion
3R:6,710,620..6,710,624 [-]
Comment:

Deletion of 5 nucleotides (bases 1120-1124 with respect to pb-RA) causes a frameshift and early translation termination. There is also a T1220C nucleotide substitution downstream of the frameshift.

(Tayyab et al., 2004)
Variant Molecular Consequences
Associated Sequence Data
DDBJ / EMBL / GenBank
DNA sequence
Protein sequence
 
UniProtKB/Swiss-Prot
    UniProtKB/TrEMBL
      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

      pb2/pb20 flies have vestigial maxillary palps, the labellar caps are fully transformed to tarsi and the pseudotracheae are missing.

      (Tayyab et al., 2004)

      The labial palp is transformed to prothoracic leg.

      (Cribbs et al., 1992)

      leg

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

      Duncan and Kaufman.

      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (2)
      Reported As
      Symbol Synonym
      2
      (Cribbs et al., 1992)
      pb2
      (Tayyab et al., 2004)
      Name Synonyms
      Secondary FlyBase IDs
        References (3)