FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Dmel\CTCFP35.2
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General Information
Symbol
Dmel\CTCFP35.2
Species
D. melanogaster
Name
FlyBase ID
FBal0241199
Feature type
allele
Associated gene
Associated Insertion(s)
Carried in Construct
Also Known As
CTCF35.2
Key Links
Allele class
Nature of the Allele
Allele class
Progenitor genotype
Cytology
Description

Imprecise excision of P{EP}CTCFGE22007 generates a deletion in CTCF.

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
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Modifiers Based on Experimental Evidence ( 0 )
Disease
Interaction
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Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
 
Disease-implicated variant(s)
 
Phenotypic Data
Phenotypic Class
Phenotype Manifest In
Detailed Description
Statement
Reference

CTCFP35.2/CTCF9 have pharate adult lethality, with rare escapers that eclose but die within 24-48hr, and show posterior-to-anterior homeotic transformations of abdominal segments A8-A6: in males genitalia is rotated by approximately 20-180[o] (90%), s6 (sternite of the sixth segment) has 4-8 (average 6) bristles; in females s7 has 12-16 (average 14) bristles, shape of s7 transformed toward s6 and bristles lose orientation, and t8 (tergite of the eighth segment) has rows of large bristles.

CTCFy+1/CTCFP35.2 males and females extracted from pupal cases show posterior-to-anterior homeotic transformations of abdominal segments A8-A6: in males genitalia is rotated 90-180[o] (100% penetrance) and s6 has 6-10 (average 8) bristles; in females s7 has 11-14 (average 12) bristles, the shape of s7 is transformed toward s6 and bristles lose orientation, and t8 has rows of large bristles.

CTCFP35.2 mutant salivary glands display dramatic vesiculation of the nucleolar structure.

CTCFP35.2 homozygotes are pharate lethal. Male genitalia are rotated by 40[o]-90[o] in 100% of cases. Males exhibit A4 tergites with patchy pigmentation. A5 tergites show a few white spots, the A5 sternite is elongated into a banana shape. Eight bristles are found on the sixth sternite, and the seventh tergite is smaller than in wild-type. CTCFP35.2 homozygous females exhibit A7 sternites with up to 11 bristles pointing vertically downwards.

External Data
Interactions
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Phenotypic Class
Phenotype Manifest In
Additional Comments
Genetic Interactions
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Xenogenetic Interactions
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Complementation and Rescue Data
Images (0)
Mutant
Wild-type
Stocks (0)
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External Crossreferences and Linkouts ( 0 )
Synonyms and Secondary IDs (2)
Reported As
Name Synonyms
Secondary FlyBase IDs
    References (3)