FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Allele: Hsap\HTTGMR.Q75
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General Information
Symbol
Hsap\HTTGMR.Q75
Species
H. sapiens
Name
FlyBase ID
FBal0093284
Feature type
allele
Associated gene
Hsap\HTT
Associated Insertion(s)
Carried in Construct
P{GMR-HTT.Q75}
Key Links
Transgenic product class
inframe_deletion
(Jackson et al., 1998)
trinucleotide_repeat_expansion
(Jackson et al., 1998)
Mutagen
Nature of the Allele
Transgenic product class
inframe_deletion
(Jackson et al., 1998)
trinucleotide_repeat_expansion
(Jackson et al., 1998)
Mutagen
in vitro construct
(Jackson et al., 1998)
Progenitor genotype
Carried in construct
P{GMR-HTT.Q75}
Cytology
Description

Expression of Hsap\HTT amino acids 1-170, with 75 CAG glutamine repeats is governed by the GMR promoter.

(Jackson et al., 1998)
Allele components
Component
Use(s)
Regulatory region(s)
GMR
Encoded product / tool
Hsap\HTT
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 ( 1 )
      Disease
      Evidence
      References
      model of  Huntington's disease
      CEA
      (Jackson et al., 1998)
      Modifiers Based on Experimental Evidence ( 0 )
      Disease
      Interaction
      References
      Comments on Models/Modifiers Based on Experimental Evidence ( 0 )
       
      Disease-implicated variant(s)
       
      This allele represents a human variant implicated in disease.
      (Jackson et al., 1998)
      HTT:p.Gln18[75]
      (FlyBase curators, 2019-)
      Variants Synonym(s)
      HTT:p.Gln18[75Gln]
      HTT, (CAG)n REPEAT EXPANSION
      Associated human disease model(s)
      External database links
      ClinVar: HTT_409
      Comments concerning this variant
      Phenotypic Data
      Phenotypic Class
      Phenotype Manifest In
      Detailed Description
      Statement
      Reference

      Ommatidial morphology is normal at eclosion but at loss of rhabdomeres is apparent in a small proportion of ommatidia by 10 days after eclosion. At 30 days, a weak photoreceptor degeneration phenotype is evident.

      (Jackson et al., 1998)
      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

      Shows no somatic or germline instability.

      (Jackson et al., 1998)
      External Crossreferences and Linkouts ( 0 )
      Synonyms and Secondary IDs (2)
      Reported As
      Symbol Synonym
      Hsap\HDGMR.Q75
      Hsap\HTTGMR.Q75
      Name Synonyms
      Secondary FlyBase IDs
        References (2)