FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\fit
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General Information
Symbol
Dmel\fit
Species
D. melanogaster
Name
female-specific independent of transformer
Annotation Symbol
CG17820
Feature Type
protein_coding_gene
FlyBase ID
FBgn0038914
Gene Model Status
Current
Stock Availability
3 publicly available
Gene Summary
Contribute a Gene Snapshot for this gene.
All Summaries
Key Links
Genomic Location
Cytogenetic map
93F14-93F14
Sequence location
Recombination map
3-73
RefSeq locus
NT_033777 REGION:21883924..21884454
Sequence
Get Decorated FASTA
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
NCBI
UCSC
Ensembl
PopFly
Function
Gene Ontology (GO) Annotations (0 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (0 terms)
Biological Process (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (0 terms)
Cellular Component (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (0 terms)
Gene Group (FlyBase)
Protein Family (UniProt)
-
Protein Signatures (InterPro)
    -
    Summaries
    Gene Model and Products
    Number of Transcripts
    1
    Number of Unique Polypeptides
    1

    Please see the JBrowse view of Dmel\fit for information on other features

    To submit a correction to a gene model please use the Contact FlyBase form

    Protein Domains (via Pfam)
    Isoform displayed:
    Pfam protein domains
    InterPro name
    classification
    start
    end
    Protein Domains (via SMART)
    Isoform displayed:
    SMART protein domains
    InterPro name
    classification
    start
    end
    Structure
    Protein 3D structure   (Predicted by AlphaFold)   (AlphaFold entry Q9VD66)

    If you don't see a structure in the viewer, refresh your browser.
    Model Confidence:
    • Very high (pLDDT > 90)
    • Confident (90 > pLDDT > 70)
    • Low (70 > pLDDT > 50)
    • Very low (pLDDT < 50)

    AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.

    Experimentally Determined Structures
    Crossreferences
    Comments on Gene Model

    Gene model reviewed during 5.47

    Transcript Data
    Annotated Transcripts
    Name
    FlyBase ID
    RefSeq ID
    Length (nt)
    Assoc. CDS (aa)
    fit-RA
    FBtr0084153
    NM_142736
    531
    121
    Additional Transcript Data and Comments
    Reported size (kB)
    Comments
    External Data
    Crossreferences
    Polypeptide Data
    Annotated Polypeptides
    Name
    FlyBase ID
    Predicted MW (kDa)
    Length (aa)
    Theoretical pI
    UniProt
    RefSeq ID
    GenBank
    fit-PA
    FBpp0083551
    13.9
    121
    7.68
    Q9VD66
    NP_650993
    AAF55934
    Polypeptides with Identical Sequences

    There is only one protein coding transcript and one polypeptide associated with this gene

    Additional Polypeptide Data and Comments
    Reported size (kDa)
    Comments
    External Data
    Crossreferences
    Linkouts
    Sequences Consistent with the Gene Model
    Mapped Features

    Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\fit using the Feature Mapper tool.

    External Data
    Crossreferences
    Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
    Linkouts
    Expression Data
    Testis-specificity index

    The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).

    -0.59

    Transcript Expression
    RT-PCR
    Stage
    Tissue/Position (including subcellular localization)
    Reference
    adult stage
    adult fat body

    Comment: higher levels in females than males

    (Sun et al., 2017)
    adult head

    Comment: higher levels in females than males

    (Sun et al., 2017)
    Additional Descriptive Data

    fit is expressed in adult heads and enriched in fat bodies with a greater than 10-fold difference between females and males (higher in females).

    (Sun et al., 2017)
    Marker for
     
    Subcellular Localization
    CV Term
    Polypeptide Expression
    immunolocalization
    Stage
    Tissue/Position (including subcellular localization)
    Reference
    adult stage
    fat cell

    Comment: higher levels in females than males

    (Sun et al., 2017)
    Additional Descriptive Data

    fit protein is detected in fat cells in adult heads with a much higher level observed in females than males.

    (Sun et al., 2017)
    Marker for
     
    Subcellular Localization
    CV Term
    Evidence
    References
    Expression Deduced from Reporters
    High-Throughput Expression Data
    Associated Tools

    JBrowse - Visual display of RNA-Seq signals

    View Dmel\fit in JBrowse
    RNA-Seq by Region - Search RNA-Seq expression levels by exon or genomic region
    Bulk Downloads
    RNA-Seq RPKM values for all genes
    Reference
    See Gelbart and Emmert, 2013 for analysis details and data files for all genes.
    Developmental Proteome: Life Cycle
    Developmental Proteome: Embryogenesis
    External Data and Images
    Linkouts
    BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
    DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
    EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
    FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
    FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
    Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
    Flygut - An atlas of the Drosophila adult midgut
    Images
    FlyBase Wiki
    Image Based Resources
    Alleles, Insertions, Transgenic Constructs, and Aberrations
    Classical and Insertion Alleles ( 2 )
    For All Classical and Insertion Alleles Show
     
    Other relevant insertions
    Transgenic Constructs ( 5 )
    For All Alleles Carried on Transgenic Constructs Show
    Transgenic constructs containing/affecting coding region of fit
    Transgenic constructs containing regulatory region of fit
    Aberrations (Deficiencies and Duplications) ( 1 )
    Inferred from experimentation ( 1 )
    Gene disrupted in
    Df(3R)Exel6188
    (Ryder, 2004.4.26)
    Inferred from location ( 7 )
    Variants
    Variant Molecular Consequences
    Alleles Representing Disease-Implicated Variants
    Phenotypes
    Orthologs
    Downloads
    Download All DIOPT Orthologs
    Human Orthologs (via DIOPT v9.1)
    Species\Gene Symbol
    Score
    Best Score
    Best Reverse Score
    Source
    Compara
    Domainoid
    eggNOG
    Hieranoid
    Homologene
    Inparanoid
    OMA
    OrthoDB
    OrthoFinder
    OrthoInspector
    orthoMCL
    Panther
    Phylome
    SonicParanoid
    Alignment
    Complementation?
    Transgene?
    Homo sapiens (Human) (0)
    Model Organism Orthologs (via DIOPT v9.1)
    Species\Gene Symbol
    Score
    Best Score
    Best Reverse Score
    Source
    Compara
    Domainoid
    eggNOG
    Hieranoid
    Homologene
    Inparanoid
    OMA
    OrthoDB
    OrthoFinder
    OrthoInspector
    orthoMCL
    Panther
    Phylome
    SonicParanoid
    Alignment
    Complementation?
    Transgene?
    Rattus norvegicus (Norway rat) (0)
    Mus musculus (laboratory mouse) (0)
    Xenopus tropicalis (Western clawed frog) (0)
    Danio rerio (Zebrafish) (0)
    Caenorhabditis elegans (Nematode, roundworm) (0)
    Anopheles gambiae (African malaria mosquito) (0)
    Arabidopsis thaliana (thale-cress) (0)
    Saccharomyces cerevisiae (Brewer's yeast) (0)
    Schizosaccharomyces pombe (Fission yeast) (0)
    Escherichia coli (enterobacterium) (0)
    Other Organism Orthologs (via OrthoDB)
    Data provided directly from OrthoDB:fit. Refer to their site for version information.
    Paralogs
    Downloads
    Download All DIOPT Paralogs
    Paralogs (via DIOPT v9.1)
    Human Disease Associations
    FlyBase Human Disease Model Reports
      Disease Ontology (DO) Annotations
      Models Based on Experimental Evidence ( 0 )
      Allele
      Disease
      Evidence
      References
      Potential Models Based on Orthology ( 0 )
      Human Ortholog
      Disease
      Evidence
      References
      Modifiers Based on Experimental Evidence ( 0 )
      Allele
      Disease
      Interaction
      References
      Disease Associations of Human Orthologs (via DIOPT v9.1 and OMIM)
      Note that ortholog calls supported by only 1 or 2 algorithms (DIOPT score < 3) are not shown.
      Homo sapiens (Human)
      Gene name
      Score
      OMIM
      OMIM Phenotype
      DO term
      Complementation?
      Transgene?
      Functional Complementation Data
      Functional complementation data is computed by FlyBase using a combination of the orthology data obtained from DIOPT and OrthoDB and the allele-level genetic interaction data curated from the literature.
      Interactions
      Summary of Physical Interactions
      Interaction Browsers
      Summary of Genetic Interactions
      Interaction Browsers
      View in FlyBase Interactions Browser   View in MIST tool (external link)
      Please look at the allele data for full details of the genetic interactions
      Starting gene(s)
      Interaction type
      Interacting gene(s)
      Reference
      fit
      suppressible
      InR
      (Sun et al., 2017)
      Starting gene(s)
      Interaction type
      Interacting gene(s)
      Reference
      External Data
      Linkouts
      DroID - A comprehensive database of gene and protein interactions.
      Pathways
      Signaling Pathways (FlyBase)
      Metabolic Pathways
      FlyBase
      External Links
      External Data
      Linkouts
      Class of Gene
      Genomic Location and Detailed Mapping Data
      Chromosome (arm)
      3R
      Recombination map
      3-73
      Cytogenetic map
      93F14-93F14
      Sequence location
      FlyBase Computed Cytological Location
      Cytogenetic map
      Evidence for location
      93F14-93F14
      Limits computationally determined from genome sequence between P{PZ}tsl00617 and P{lacW}howj5B5&P{EP}EP738
      Experimentally Determined Cytological Location
      Cytogenetic map
      Notes
      References
      Experimentally Determined Recombination Data
      Location

      3-73

      (FlyBase, 2016)

      3-75.7

      (Comeron et al., 2012)
      Left of (cM)
      Right of (cM)
      Notes
      Stocks and Reagents
      Stocks (3)
      Genomic Clones (18)
       

      Please Note FlyBase no longer curates genomic clone accessions so this list may not be complete

      cDNA Clones (8)
       

      Please Note This section lists cDNAs and ESTs that fall within the genomic extent of the gene model, which may include cDNAs and ESTs of genes within introns, or of overlapping genes. Please see JBrowse for alignment of the cDNAs and ESTs to the gene model.

      cDNA clones, fully sequenced
      BDGP DGC clones
      Other clones
        Drosophila Genomics Resource Center cDNA clones

        For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.

        cDNA Clones, End Sequenced (ESTs)
        BDGP DGC clones
          Other clones
          RNAi and Array Information
          Linkouts
          DRSC - Results frm RNAi screens
          Antibody Information
          Laboratory Generated Antibodies
           

          monoclonal

          (Sun et al., 2017)
          Commercially Available Antibodies
           
          Cell Line Information
          Publicly Available Cell Lines
           
            Other Stable Cell Lines
             
              Other Comments
              Relationship to Other Genes
              Source for database merge of
              Additional comments
              Nomenclature History
              Source for database identify of

              Source for identity of: fit CG17820

              (Fujii and Amrein, 2002)
              Nomenclature comments
              Etymology
              Synonyms and Secondary IDs (7)
              Reported As
              Symbol Synonym
              CG17820
              (Palu and Thummel, 2016, Hallier et al., 2015, Ellis and Carney, 2011, Ellis and Carney, 2010, Monzo et al., 2010, Fujikawa et al., 2009, Keleman et al., 2009.8.5, Nakahara et al., 2005, McGraw et al., 2004, Anholt et al., 2003, Fujii and Amrein, 2002)
              FIT
              (Lee et al., 2025, Meschi and Delanoue, 2021, Semaniuk et al., 2021, Koyama et al., 2020, Texada et al., 2020)
              Fit
              (De Groef et al., 2024, Sun et al., 2017)
              fit
              (Shih et al., 2025, Huang et al., 2024, Kosakamoto et al., 2024, Ganguly et al., 2021, Wang et al., 2021, Carvalho-Santos et al., 2020, Hood et al., 2020, Newell et al., 2020, Fowler et al., 2019, Lin et al., 2019, Gáliková and Klepsatel, 2018, Huylmans and Parsch, 2014, Whitaker et al., 2014, Short and Lazzaro, 2013, Chintapalli et al., 2012, Farhadian et al., 2012, Boyd et al., 2011, Ellis and Carney, 2011, Dalton et al., 2010, Ellis and Carney, 2010, Fernández-Ayala et al., 2010, Monzo et al., 2010, Parisi et al., 2010, Carpenter et al., 2009, Fujikawa et al., 2009, Kapelnikov et al., 2008, McGraw et al., 2008, Carney, 2007, Goldman and Arbeitman, 2007, Lawniczak and Begun, 2004)
              Name Synonyms
              female sterile independent of transformer
              (Parisi et al., 2010)
              female-specific independent of transformer
              (Hallier et al., 2015, Ellis and Carney, 2010, Fernández-Ayala et al., 2010, Ellis and Carney, 2008, McGraw et al., 2008, Carney, 2007, Goldman and Arbeitman, 2007, Fujii and Amrein, 2002)
              independent of transformer
              (Boyd et al., 2011)
              Secondary FlyBase IDs
                Datasets (0)
                Study focus (0)
                Experimental Role
                Project
                Project Type
                Title
                Study result (0)
                Result
                Result Type
                Title
                External Crossreferences and Linkouts ( 25 )
                Sequence Crossreferences
                NCBI Gene - Gene integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
                GenBank Nucleotide - A collection of sequences from several sources, including GenBank, RefSeq, TPA, and PDB.
                GenBank Protein - A collection of sequences from several sources, including translations from annotated coding regions in GenBank, RefSeq and TPA, as well as records from SwissProt, PIR, PRF, and PDB.
                RefSeq - A comprehensive, integrated, non-redundant, well-annotated set of reference sequences including genomic, transcript, and protein.
                UniProt/GCRP - The gene-centric reference proteome (GCRP) provides a 1:1 mapping between genes and UniProt accessions in which a single 'canonical' isoform represents the product(s) of each protein-coding gene.
                UniProt/TrEMBL - Automatically annotated and unreviewed records of protein sequence and functional information
                Other crossreferences
                AlphaFold DB - AlphaFold provides open access to protein structure predictions for the human proteome and other key proteins of interest, to accelerate scientific research.
                BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
                DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
                EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
                FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
                FlyMine - An integrated database for Drosophila genomics
                KEGG Genes - Molecular building blocks of life in the genomic space.
                MARRVEL_MODEL - MARRVEL (model organism gene)
                Linkouts
                Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
                DroID - A comprehensive database of gene and protein interactions.
                DRSC - Results frm RNAi screens
                Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
                FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
                FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
                Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
                Flygut - An atlas of the Drosophila adult midgut
                References (66)