FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\Rtel1
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General Information
Symbol
Dmel\Rtel1
Species
D. melanogaster
Name
Regulator of telomere elongation helicase 1
Annotation Symbol
CG4078
Feature Type
FlyBase ID
FBgn0029798
Gene Model Status
Stock Availability
Enzyme Name (EC)
DNA helicase (3.6.4.12)
Gene Summary
A probable ATP-dependent DNA helicase implicated in DNA repair and the maintenance of genomic stability. Acts as an anti-recombinase to counteract toxic recombination and limit crossover during meiosis. Regulates meiotic recombination and crossover homeostasis by physically dissociating strand invasion events and thereby promotes noncrossover repair by meiotic synthesis dependent strand annealing (SDSA) as well as disassembly of D loop recombination intermediates (By similarity). In male germline stem cells (GSCs), plays a role in GSCs maintenance during larval germline development by modulating the expression of genes such as Stat92E and preventing DNA damage-induced checkpoint activation (PubMed:34644293). May play a role in female germline stem cell maintenance (PubMed:34644293). (UniProt, Q9W484)
Contribute a Gene Snapshot for this gene.
Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-13
RefSeq locus
NC_004354 REGION:5747747..5752077
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (20 terms)
Molecular Function (8 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from direct assay
Terms Based on Predictions or Assertions (7 terms)
CV Term
Evidence
References
enables ATP binding
inferred from sequence or structural similarity with UniProtKB:Q9NZ71
inferred from biological aspect of ancestor with PANTHER:PTN000158195
enables DNA binding
inferred from electronic annotation with InterPro:IPR010614
inferred from sequence or structural similarity with UniProtKB:Q9NZ71
inferred from biological aspect of ancestor with PANTHER:PTN000158192
inferred from biological aspect of ancestor with PANTHER:PTN000158195
inferred from electronic annotation with InterPro:IPR006555
inferred from electronic annotation with InterPro:IPR006555
Biological Process (11 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (9 terms)
CV Term
Evidence
References
involved_in DNA recombination
inferred from electronic annotation with InterPro:IPR030845
involved_in DNA repair
inferred from electronic annotation with InterPro:IPR030845
involved_in DNA replication
inferred from electronic annotation with InterPro:IPR030845
inferred from biological aspect of ancestor with PANTHER:PTN000158195
inferred from sequence or structural similarity with UniProtKB:Q9NZ71
inferred from biological aspect of ancestor with PANTHER:PTN000158195
inferred from electronic annotation with InterPro:IPR030845
inferred from biological aspect of ancestor with PANTHER:PTN000158195
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
is_active_in nucleus
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in nucleus
inferred from biological aspect of ancestor with PANTHER:PTN000158195
located_in nucleus
inferred from electronic annotation with InterPro:IPR030845
inferred from sequence or structural similarity with UniProtKB:Q0VGM9
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the helicase family. RAD3/XPD subfamily. (Q9W484)
Catalytic Activity (EC/Rhea)
DNA helicase activity
ATP + H2O = ADP + phosphate + H(+) (3.6.4.12)
Summaries
Gene Group (FlyBase)
RAD3/XPD-LIKE DNA HELICASES -
Rad3/XPD-like DNA helicases belong to helicase superfamily 2 and are named after the S. cerevisiae Rad3 and human XPD orthologous genes. They typically contain large inserts within the helicase core domains and feature diverse C-termini and N-termini. The XPD/Rad3 helicase is a component of transcription factor IIH, which functions in transcription initiation and nucleotide excision repair in eukaryotes, catalyzing DNA duplex opening localized to the transcription start site or site of DNA damage, respectively. XPD has a 5' to 3' polarity and the helicase activity is dependent on an iron-sulfur cluster binding domain. The XPD gene is the target of mutation in patients with xeroderma pigmentosum, trichothiodystrophy, and Cockayne's syndrome (Adapted from PMID:20456941 and PMID:18510925.)
Protein Function (UniProtKB)
A probable ATP-dependent DNA helicase implicated in DNA repair and the maintenance of genomic stability. Acts as an anti-recombinase to counteract toxic recombination and limit crossover during meiosis. Regulates meiotic recombination and crossover homeostasis by physically dissociating strand invasion events and thereby promotes noncrossover repair by meiotic synthesis dependent strand annealing (SDSA) as well as disassembly of D loop recombination intermediates (By similarity). In male germline stem cells (GSCs), plays a role in GSCs maintenance during larval germline development by modulating the expression of genes such as Stat92E and preventing DNA damage-induced checkpoint activation (PubMed:34644293). May play a role in female germline stem cell maintenance (PubMed:34644293).
(UniProt, Q9W484)
Gene Model and Products
Number of Transcripts
2
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Rtel1 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 Q9W484)

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

Low-frequency RNA-Seq exon junction(s) not annotated.

Gene model reviewed during 5.45

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0070807
3308
985
FBtr0332398
3603
985
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
FBpp0070773
109.7
985
8.94
FBpp0304672
109.7
985
8.94
Polypeptides with Identical Sequences

The group(s) of polypeptides indicated below share identical sequence to each other.

985 aa isoforms: Rtel1-PA, Rtel1-PB
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
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\Rtel1 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).

1.07

Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
organism

Comment: maternally deposited

antennal primordium

Comment: reported as procephalic ectoderm primordium

central brain primordium

Comment: reported as procephalic ectoderm primordium

visual primordium

Comment: reported as procephalic ectoderm primordium

dorsal head epidermis primordium

Comment: reported as procephalic ectoderm primordium

lateral head epidermis primordium

Comment: reported as procephalic ectoderm primordium

ventral head epidermis primordium

Comment: reported as procephalic ectoderm primordium

Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
is_active_in nucleus
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\Rtel1 in JBrowse
RNA-Seq by Region - Search RNA-Seq expression levels by exon or genomic region
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
FlyExpress - Embryonic expression images (BDGP data)
  • Stages(s) 4-6
  • Stages(s) 11-12
  • Stages(s) 13-16
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 5 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 6 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Rtel1
Transgenic constructs containing regulatory region of Rtel1
Aberrations (Deficiencies and Duplications) ( 1 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
Phenotypes
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (7)
12 of 14
Yes
Yes
5 of 14
No
Yes
1  
3 of 14
No
No
3 of 14
No
No
2 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (4)
12 of 14
Yes
Yes
4 of 14
No
Yes
3 of 14
No
No
2 of 14
No
No
Mus musculus (laboratory mouse) (4)
11 of 14
Yes
Yes
5 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
Xenopus tropicalis (Western clawed frog) (4)
6 of 13
Yes
Yes
4 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (4)
12 of 14
Yes
Yes
4 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (5)
13 of 14
Yes
Yes
5 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
2 of 14
No
Yes
Anopheles gambiae (African malaria mosquito) (3)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (7)
12 of 13
Yes
Yes
4 of 13
No
Yes
4 of 13
No
Yes
3 of 13
No
No
3 of 13
No
No
2 of 13
No
No
2 of 13
No
Yes
Saccharomyces cerevisiae (Brewer's yeast) (2)
2 of 13
Yes
No
2 of 13
Yes
No
Schizosaccharomyces pombe (Fission yeast) (2)
2 of 12
Yes
No
2 of 12
Yes
No
Escherichia coli (enterobacterium) (2)
4 of 11
Yes
Yes
4 of 11
Yes
Yes
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Rtel1. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (2)
6 of 13
6 of 13
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 ( 3 )
    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.
    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

    Please see the Physical Interaction reports below for full details
    protein-protein
    Physical Interaction
    Assay
    References
    Summary of Genetic Interactions
    Interaction Browsers

    Please look at the allele data for full details of the genetic interactions
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    External Data
    Linkouts
    BioGRID - A database of protein and genetic interactions.
    DroID - A comprehensive database of gene and protein interactions.
    MIST (protein-protein) - An integrated Molecular Interaction Database
    Pathways
    Signaling Pathways (FlyBase)
    Metabolic Pathways
    FlyBase
    External Links
    External Data
    Linkouts
    Class of Gene
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    X
    Recombination map
    1-13
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    5B6-5B6
    Limits computationally determined from genome sequence between P{EP}cvEP1349&P{EP}CG32758EP1368 and P{EP}EP404&P{EP}EP1405
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Location
    Left of (cM)
    Right of (cM)
    Notes
    Stocks and Reagents
    Stocks (7)
    Genomic Clones (13)
     

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

    cDNA Clones (94)
     

    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)
    RNAi and Array Information
    Linkouts
    DRSC - Results frm RNAi screens
    Antibody Information
    Laboratory Generated Antibodies
     
    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: Rtel1 CG4078

        Nomenclature comments
        Etymology

        Named 'Rtel1' after the vertebrate homolog.

        Synonyms and Secondary IDs (5)
        Reported As
        Name Synonyms
        Regulator of Telomere Elongation Helicase 1
        Regulator of telomere elongation helicase 1
        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 ( 42 )
          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/Swiss-Prot - Manually annotated and reviewed records of protein sequence and functional information
          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
          BioGRID - A database of protein and genetic interactions.
          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
          iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
          MIST (protein-protein) - An integrated Molecular Interaction Database
          References (39)