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General Information
Symbol
Dmel\arx
Species
D. melanogaster
Name
asterix
Annotation Symbol
CG3893
Feature Type
FlyBase ID
FBgn0036826
Gene Model Status
Stock Availability
Gene Summary
asterix (arx) encodes a nuclear protein required for fertility. It plays an essential role in piRNA-guided transcriptional silencing, interacting probably directly with the product of piwi. [Date last reviewed: 2019-03-07] (FlyBase Gene Snapshot)
Also Known As

Gtsf1

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-45
RefSeq locus
NT_037436 REGION:18900595..18901554
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
GO Summary Ribbons
Gene Ontology (GO) Annotations (4 terms)
Molecular Function (0 terms)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (0 terms)
Biological Process (3 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
inferred from mutant phenotype
involved_in oogenesis
inferred from mutant phenotype
Terms Based on Predictions or Assertions (0 terms)
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (0 terms)
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the UPF0224 (FAM112) family. (Q8SWX0)
Summaries
Gene Snapshot
asterix (arx) encodes a nuclear protein required for fertility. It plays an essential role in piRNA-guided transcriptional silencing, interacting probably directly with the product of piwi. [Date last reviewed: 2019-03-07]
Protein Function (UniProtKB)
Acts via the piwi-interacting RNA (piRNA) pathway which mediates the repression of transposable elements during meiosis by forming complexes composed of piRNAs and piwi proteins and governs the methylation and subsequent repression of transposons. Required for repression of transposons and neighboring genes in ovarian somatic and germline cells.
(UniProt, Q8SWX0)
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\arx 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
Comments on Gene Model

Gene model reviewed during 5.46

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0075075
892
167
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
RefSeq ID
GenBank
FBpp0074842
20.1
167
8.22
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
Subunit Structure (UniProtKB)

Interacts with piwi.

(UniProt, Q8SWX0)
Domain

The zinc fingers are required for transcriptional silencing activity.

(UniProt, Q8SWX0)
Crossreferences
InterPro - A database of protein families, domains and functional sites
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\arx 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
Expression Summary Ribbons
Colored tiles in ribbon indicate that expression data has been curated by FlyBase for that anatomical location. Colorless tiles indicate that there is no curated data for that location.
For complete stage-specific expression data, view the modENCODE Development RNA-Seq section under High-Throughput Expression below.
Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
organism

Comment: maternally deposited

RT-PCR
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
epitope tag
Stage
Tissue/Position (including subcellular localization)
Reference
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
western blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\arx in GBrowse 2
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) 1-3
  • Stages(s) 4-6
  • Stages(s) 7-8
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 3 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 11 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of arx
Transgenic constructs containing regulatory region of arx
Aberrations (Deficiencies and Duplications) ( 0 )
Inferred from experimentation ( 0 )
Inferred from location ( 0 )
    Alleles Representing Disease-Implicated Variants
    Phenotypes
    Orthologs
    Human Orthologs (via DIOPT v8.0)
    Homo sapiens (Human) (2)
    Species\Gene Symbol
    Score
    Best Score
    Best Reverse Score
    Alignment
    Complementation?
    Transgene?
    10 of 15
    Yes
    Yes
    8 of 15
    No
    Yes
    Model Organism Orthologs (via DIOPT v8.0)
    Mus musculus (laboratory mouse) (4)
    Species\Gene Symbol
    Score
    Best Score
    Best Reverse Score
    Alignment
    Complementation?
    Transgene?
    10 of 15
    Yes
    Yes
    7 of 15
    No
    Yes
    7 of 15
    No
    Yes
    1 of 15
    No
    No
    Rattus norvegicus (Norway rat) (3)
    9 of 13
    Yes
    Yes
    9 of 13
    Yes
    Yes
    2 of 13
    No
    Yes
    Xenopus tropicalis (Western clawed frog) (2)
    7 of 12
    Yes
    Yes
    7 of 12
    Yes
    Yes
    Danio rerio (Zebrafish) (2)
    11 of 15
    Yes
    Yes
    6 of 15
    No
    Yes
    Caenorhabditis elegans (Nematode, roundworm) (1)
    9 of 15
    Yes
    Yes
    Arabidopsis thaliana (thale-cress) (1)
    1 of 9
    Yes
    Yes
    Saccharomyces cerevisiae (Brewer's yeast) (0)
    No records found.
    Schizosaccharomyces pombe (Fission yeast) (0)
    No records found.
    Ortholog(s) in Drosophila Species (via OrthoDB v9.1) ( EOG09190HMX )
    Organism
    Common Name
    Gene
    AAA Syntenic Ortholog
    Multiple Dmel Genes in this Orthologous Group
    Drosophila suzukii
    Spotted wing Drosophila
    Drosophila simulans
    Drosophila sechellia
    Drosophila erecta
    Drosophila yakuba
    Drosophila yakuba
    Drosophila ananassae
    Drosophila pseudoobscura pseudoobscura
    Drosophila pseudoobscura pseudoobscura
    Drosophila persimilis
    Drosophila willistoni
    Drosophila willistoni
    Drosophila virilis
    Drosophila mojavensis
    Drosophila grimshawi
    Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG09150DIH )
    Organism
    Common Name
    Gene
    Multiple Dmel Genes in this Orthologous Group
    Musca domestica
    House fly
    Glossina morsitans
    Tsetse fly
    Glossina morsitans
    Tsetse fly
    Anopheles gambiae
    Malaria mosquito
    Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( EOG090W0HOI )
    Organism
    Common Name
    Gene
    Multiple Dmel Genes in this Orthologous Group
    Bombyx mori
    Silkmoth
    Danaus plexippus
    Monarch butterfly
    Heliconius melpomene
    Postman butterfly
    Nasonia vitripennis
    Parasitic wasp
    Nasonia vitripennis
    Parasitic wasp
    Nasonia vitripennis
    Parasitic wasp
    Dendroctonus ponderosae
    Mountain pine beetle
    Dendroctonus ponderosae
    Mountain pine beetle
    Tribolium castaneum
    Red flour beetle
    Tribolium castaneum
    Red flour beetle
    Pediculus humanus
    Human body louse
    Pediculus humanus
    Human body louse
    Rhodnius prolixus
    Kissing bug
    Rhodnius prolixus
    Kissing bug
    Rhodnius prolixus
    Kissing bug
    Cimex lectularius
    Bed bug
    Acyrthosiphon pisum
    Pea aphid
    Acyrthosiphon pisum
    Pea aphid
    Acyrthosiphon pisum
    Pea aphid
    Acyrthosiphon pisum
    Pea aphid
    Zootermopsis nevadensis
    Nevada dampwood termite
    Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X0HR5 )
    Organism
    Common Name
    Gene
    Multiple Dmel Genes in this Orthologous Group
    Strigamia maritima
    European centipede
    Stegodyphus mimosarum
    African social velvet spider
    Tetranychus urticae
    Two-spotted spider mite
    Tetranychus urticae
    Two-spotted spider mite
    Tetranychus urticae
    Two-spotted spider mite
    Tetranychus urticae
    Two-spotted spider mite
    Daphnia pulex
    Water flea
    Daphnia pulex
    Water flea
    Daphnia pulex
    Water flea
    Daphnia pulex
    Water flea
    Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( EOG091G0UKY )
    Organism
    Common Name
    Gene
    Multiple Dmel Genes in this Orthologous Group
    Strongylocentrotus purpuratus
    Purple sea urchin
    Ciona intestinalis
    Vase tunicate
    Gallus gallus
    Domestic chicken
    Paralogs
    Paralogs (via DIOPT v8.0)
    Drosophila melanogaster (Fruit fly) (3)
    5 of 10
    5 of 10
    5 of 10
    Human Disease Associations
    FlyBase Human Disease Model Reports
      Disease Model Summary Ribbon
      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 v8.0 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
      Summary of Genetic Interactions
      esyN Network Diagram
      Starting gene(s)
      Interaction type
      Interacting gene(s)
      Reference
      Starting gene(s)
      Interaction type
      Interacting gene(s)
      Reference
      External Data
      Subunit Structure (UniProtKB)
      Interacts with piwi.
      (UniProt, Q8SWX0 )
      Linkouts
      DroID - A comprehensive database of gene and protein interactions.
      MIST (protein-protein) - An integrated Molecular Interaction Database
      Pathways
      Signaling Pathways (FlyBase)
      Metabolic Pathways
      External Data
      Linkouts
      Genomic Location and Detailed Mapping Data
      Chromosome (arm)
      3L
      Recombination map
      3-45
      Cytogenetic map
      Sequence location
      FlyBase Computed Cytological Location
      Cytogenetic map
      Evidence for location
      75E4-75E4
      Limits computationally determined from genome sequence between P{lacW}l(3)j4E6j4E6 and P{EP}MESR6EP3142
      Experimentally Determined Cytological Location
      Cytogenetic map
      Notes
      References
      Experimentally Determined Recombination Data
      Location
      Left of (cM)
      Right of (cM)
      Notes
      Stocks and Reagents
      Stocks (6)
      Genomic Clones (12)
       

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

      cDNA Clones (22)
       

      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 GBrowse 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
          RNAi and Array Information
          Linkouts
          DRSC - Results frm RNAi screens
          GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
          Antibody Information
          Laboratory Generated Antibodies
          Commercially Available Antibodies
           
          Other Information
          Relationship to Other Genes
          Source for database identify of

          Source for identity of: arx CG3893

          Source for database merge of

          Source for merge of: CG3893 BcDNA:LD18018

          Additional comments

          Source for merge of CG3893 BcDNA:LD18018 was a shared cDNA ( date:020730 ).

          Other Comments

          arx is an essential component of the piwi-mediated transcription silencing complex.

          arx is essential for transposon silencing in the germline.

          Origin and Etymology
          Discoverer
          Etymology

          The gene is named "asterix" because of its small size, yet powerful role in transposon silencing.

          Identification
          External Crossreferences and Linkouts ( 30 )
          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/Swiss-Prot - Manually annotated and reviewed records of protein sequence and functional information
          Other crossreferences
          BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
          Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
          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
          Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
          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
          GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
          iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
          InterPro - A database of protein families, domains and functional sites
          KEGG Genes - Molecular building blocks of life in the genomic space.
          MARRVEL_MODEL - MARRVEL (model organism gene)
          modMine - A data warehouse for the modENCODE project
          Linkouts
          DroID - A comprehensive database of gene and protein interactions.
          DRSC - Results frm RNAi screens
          FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
          FlyMine - An integrated database for Drosophila genomics
          MIST (protein-protein) - An integrated Molecular Interaction Database
          Synonyms and Secondary IDs (10)
          Datasets (0)
          Study focus (0)
          Experimental Role
          Project
          Project Type
          Title
          References (49)