FlyBase Allele Report: Dmel\psq[P4]

FB2026_01 , released March 12, 2026

FB2026_01 , released March 12, 2026

Allele: Dmel\psq^P4

General Information

Symbol

Dmel\psq^P4

Species

D. melanogaster

Name

FlyBase ID

FBal0032497

Feature type

allele

Associated gene

Associated Insertion(s)

Carried in Construct

Key Links

Allele class

loss of function allele

Mutagen

P-element activity

Nature of the Allele

Allele class

loss of function allele

(Siegel et al., 1993)

Mutagen

P-element activity

(Weber et al., 1995, Siegel et al., 1993)

Progenitor genotype

Associated Insertion(s)

Cytology

Description

P{lacW} insertion at exon 1A.

(Weber et al., 1995)

Allele components

Component

Use(s)

Inserted element

Encoded product / tool

reporter enzyme

Tagged with

nuclear protein localization tag

Mutations Mapped to the Genome

Curation Data

Type

Location

Additional Notes

References

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

lethal - all die during embryonic stage | maternal effect

(Siegel et al., 1993)

some die during embryonic stage | maternal effect

(Siegel et al., 1993)

(Weber et al., 1995)

Phenotype Manifest In

egg chamber | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 1 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 2 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 3 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 4 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 5 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 6 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 7 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 8 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 9 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 10 | maternal effect

(Siegel et al., 1993)

embryonic abdominal segment 11 | maternal effect

(Siegel et al., 1993)

primordial germ cell | maternal effect

(Siegel et al., 1993)

Detailed Description

Statement

Reference

Viable over Df(2R)12 causing female sterility and maternal phenotypes.

(Weber et al., 1995)

Affected embryos from 5 day old or younger females show a range of abdominal segmentation defects, with loss or fusion of some or all of the abdominal segments. Pole cells fail to form. 1% of eggs hatch and develop into viable but sterile adults, lacking germ cells. Females more than 7 days old lay eggs which never hatch: 90% of the embryos completely lack abdominal segments. Egg chambers from homozygous females occasionally show supernumerary germ cells.

(Siegel et al., 1993)

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

Comments

Comments

Δ2-3-induced excision of the P{lacW} can generate phenotypic revertants.

(Siegel et al., 1993)

External Crossreferences and Linkouts ( 0 )

Synonyms and Secondary IDs (1)

Reported As

Symbol Synonym

psq^P4

Name Synonyms

Secondary FlyBase IDs

References (2)

Report Sections