General Information
Symbol
Dmel\Axs
Species
D. melanogaster
Name
Abnormal X segregation
Annotation Symbol
CG9703
Feature Type
FlyBase ID
FBgn0000152
Gene Model Status
Stock Availability
Gene Snapshot
Abnormal X segregation (Axs) encodes a member of transmembrane proteins with calcium-activated chloride activity. Axs product localizes to a membranous sheath that surrounds the oocyte meiosis I spindle. A dominant mutation in Axs results in barrel-shaped meiosis I spindles, cell cycle defects, and missegregation of nonexchange chromosomes in oocytes. [Date last reviewed: 2018-09-06]
Genomic Location
Cytogenetic map
Sequence location
X:16,680,089..16,683,895 [-]
Recombination map
1-55
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
GO Summary Ribbons
Families, Domains and Molecular Function
Gene Group Membership (FlyBase)
Protein Family (UniProt, Sequence Similarities)
-
Protein Domains/Motifs
Molecular Function (see GO section for details)
Experimental Evidence
-
Predictions / Assertions
-
Summaries
Gene Group Membership
ANOCTAMINS -
Anoctamins (or TMEM16 family members) are calcium-activated chloride channels (CaCC) with eight putative transmembrane domains. It is not clear whether all anoctamins possess CaCC activity. (Adapted from FBrf0223235 and PMID:25451786).
Phenotypic Description from the Red Book (Lindsley and Zimm 1992)
Axs: Aberrant X segregation (A.E. Zitron and S. Hawley)
Dominant meiotic mutant that affects distributive pairing; disrupts meiotic segregation of non-exchange chromosomes in females. Has no effect on the frequency of exchange. Loss of function mutation at a dosage sensitive locus; Axs+ duplication can rescue mutation in trans. Specific to female meiosis. In Axs/Axs/Y females, X-chromosomes nondisjunction is accompanied by random disjunction of the Y rather than directed disjunction from the X's as observed in +/+/Y females. Axs homozygotes increase X nondisjunction many fold; parallel but lesser effects observed on autosomal disjunction.
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the GBrowse view of Dmel\Axs or the JBrowse view of Dmel\Axs 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 5.47
Low-frequency RNA-Seq exon junction(s) not annotated.
Gene model reviewed during 5.50
Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0074372
2575
646
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
FBpp0074146
75.2
646
8.31
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
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\Axs using the Feature Mapper tool.

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
Gene Ontology (8 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
Terms Based on Predictions or Assertions (0 terms)
Cellular Component (5 terms)
Terms Based on Experimental Evidence (4 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from sequence or structural similarity
Expression Data
Transcript Expression
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\Axs 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
FLIGHT - Cell culture data for RNAi and other high-throughput technologies
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, Transgenic Constructs and Phenotypes
Classical and Insertion Alleles ( 7 )
Transgenic Constructs ( 9 )
Deletions and Duplications ( 2 )
Summary of Phenotypes
Orthologs
Human Orthologs (via DIOPT v7.1)
Homo sapiens (Human) (2)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
11 of 15
Yes
Yes
2 of 15
No
No
Model Organism Orthologs (via DIOPT v7.1)
Mus musculus (laboratory mouse) (2)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
11 of 15
Yes
Yes
2 of 15
No
No
Rattus norvegicus (Norway rat) (1)
9 of 13
Yes
Yes
Xenopus tropicalis (Western clawed frog) (3)
7 of 12
Yes
Yes
1 of 12
No
No
1 of 12
No
Yes
Danio rerio (Zebrafish) (4)
10 of 15
Yes
Yes
7 of 15
No
Yes
2 of 15
No
No
2 of 15
No
No
Caenorhabditis elegans (Nematode, roundworm) (1)
2 of 15
Yes
No
Arabidopsis thaliana (thale-cress) (1)
5 of 9
Yes
Yes
Saccharomyces cerevisiae (Brewer's yeast) (1)
5 of 15
Yes
Yes
Schizosaccharomyces pombe (Fission yeast) (1)
5 of 12
Yes
Yes
Orthologs in Drosophila Species (via OrthoDB v9.1) ( EOG091904YN )
Organism
Common Name
Gene
AAA Syntenic Ortholog
Multiple Dmel Genes in this Orthologous Group
Drosophila melanogaster
fruit fly
Drosophila suzukii
Spotted wing Drosophila
Drosophila simulans
Drosophila sechellia
Drosophila erecta
Drosophila yakuba
Drosophila ananassae
Drosophila pseudoobscura pseudoobscura
Drosophila persimilis
Drosophila willistoni
Drosophila virilis
Drosophila mojavensis
Drosophila grimshawi
Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG091501YT )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Musca domestica
House fly
Glossina morsitans
Tsetse fly
Lucilia cuprina
Australian sheep blowfly
Mayetiola destructor
Hessian fly
Aedes aegypti
Yellow fever mosquito
Anopheles darlingi
American malaria mosquito
Anopheles gambiae
Malaria mosquito
Culex quinquefasciatus
Southern house mosquito
Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( EOG090W04IW )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Dendroctonus ponderosae
Mountain pine beetle
Tribolium castaneum
Red flour beetle
Pediculus humanus
Human body louse
Rhodnius prolixus
Kissing bug
Cimex lectularius
Bed bug
Zootermopsis nevadensis
Nevada dampwood termite
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X02D5 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Daphnia pulex
Water flea
Daphnia pulex
Water flea
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( None identified )
No non-Arthropod Metazoa orthologies identified
Human Disease Model Data
FlyBase Human Disease Model Reports
    Alleles Reported to Model Human Disease (Disease Ontology)
    Download
    Models ( 0 )
    Allele
    Disease
    Evidence
    References
    Interactions ( 0 )
    Allele
    Disease
    Interaction
    References
    Comments ( 0 )
     
    Human Orthologs (via DIOPT v7.1)
    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
    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
    esyN Network Diagram
    Show neighbor-neighbor interactions:
    Select Layout:
    Legend:
    Protein
    RNA
    Selected Interactor(s)
    Interactions Browser

    Please look at the Interaction Group reports for full details of the physical interactions
    RNA-RNA
    Interacting group
    Assay
    References
    Summary of Genetic Interactions
    esyN Network Diagram
    esyN Network Key:
    Suppression
    Enhancement

    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.
    InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
    Pathways
    Gene Group - Pathway Membership (FlyBase)
    External Data
    Linkouts
    Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    X
    Recombination map
    1-55
    Cytogenetic map
    Sequence location
    X:16,680,089..16,683,895 [-]
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    15A1-15A1
    Limits computationally determined from genome sequence between P{EP}EP1547EP1547 and P{EP}CG4928EP1341
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Location
    Notes
    Not separated from f in 80 recombinants between v and car.
    Stocks and Reagents
    Stocks (6)
    Genomic Clones (15)
     

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

    cDNA Clones (5)
     

    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 sequences
    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
      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 database merge of
      Additional comments
      Other Comments
      Examination of meiotic prophase in Axs mutants reveals that while heterochromatic pairing may be a component of the mechanism of homologous segregation, it is not sufficient to guarantee proper disjunction of nonexchange homologs.
      The Axs defect reflects a failure of the ability of achiasmate X chromosomes to separate and is not a consequence of heterologous pairings or alignments. Mutations at Axs disrupt meiotic spindle formation. The Axs locus has no detectable function in male meiosis.
      Mutations at Axs are specific to female meiosis and disrupt meiotic spindle formation, affecting the segregation of non-exchange chromosomes. Mutant alleles increase the frequency of X and 4th chromosome non-disjunction.
      Origin and Etymology
      Discoverer
      Etymology
      Identification
      External Crossreferences and Linkouts ( 34 )
      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/TrEMBL - Automatically annotated and unreviewed records of protein sequence and functional information
      Other crossreferences
      InterPro - A database of protein families, domains and functional sites
      Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
      Linkouts
      BioGRID - A database of protein and genetic interactions.
      Drosophila Genomics Resource Center - Drosophila Genomics Resource Center 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.
      FLIGHT - Cell culture data for RNAi and other high-throughput technologies
      FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
      Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
      Flygut - An atlas of the Drosophila adult midgut
      FlyMine - An integrated database for Drosophila genomics
      GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
      iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
      InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
      KEGG Genes - Molecular building blocks of life in the genomic space.
      modMine - A data warehouse for the modENCODE project
      Synonyms and Secondary IDs (6)
      Datasets (0)
      Study focus (0)
      Experimental Role
      Project
      Project Type
      Title
      References (55)