Open Close
General Information
Symbol
Dmel\zpg
Species
D. melanogaster
Name
zero population growth
Annotation Symbol
CG10125
Feature Type
FlyBase ID
FBgn0024177
Gene Model Status
Stock Availability
Gene Snapshot
In progress.Contributions welcome.
Also Known As

inx4

Key Links
Genomic Location
Cytogenetic map
Sequence location
3L:6,604,366..6,606,032 [-]
Recombination map

3-17

RefSeq locus
NT_037436 REGION:6604366..6606032
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
GO Summary Ribbons
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the pannexin family. (Q9VRX6)
Protein Signatures (InterPro)
Molecular Function (GO)
[Detailed GO annotations]
Experimental Evidence
-
Predictions / Assertions
Summaries
Gene Group (FlyBase)
INNEXINS -
Gap junctions are intercellular channels that link the cytoplasm of neighboring cells facilitating cell-cell communication. In non-chordates they are composed of innexins. Innexins are four transmembrane proteins that assemble into hexamers around a central channel. The association of hemichannels on adjacent membranes forms the gap junction which allows the direct passage of ions and small molecules. Gap junctions may be formed from homo- or heteromultimers. (Adapted from FBrf0219962).
Protein Function (UniProtKB)
Structural component of the gap junctions in germline cells. Required for differentiation and survival of germline cysts in females and of spermatogonia in males; gap junctional communication between spermatogonia and somatic cyst cells may be required for normal differentiation and survival of spermatogonia.
(UniProt, Q9VRX6)
Summary (Interactive Fly)

germline-specific gap junction protein - Innexin 4 - required for survival of differentiating early germ cells during gametogenesis in both sexes

Gene Model and Products
Number of Transcripts
2
Number of Unique Polypeptides
1

Please see the GBrowse view of Dmel\zpg or the JBrowse view of Dmel\zpg 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 5.44

Gene model reviewed during 5.46

Gene model reviewed during 5.56

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0076983
1455
367
FBtr0330185
1539
367
Additional Transcript Data and Comments
Reported size (kB)

1.6 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
RefSeq ID
GenBank
FBpp0076692
42.8
367
9.18
FBpp0303218
42.8
367
9.18
Polypeptides with Identical Sequences

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

367 aa isoforms: zpg-PA, zpg-PB
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\zpg 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 (10 terms)
Molecular Function (2 terms)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000223951
(assigned by GO_Central )
inferred by curator from GO:0005921
non-traceable author statement
(assigned by UniProt )
Biological Process (5 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with FLYBASE:Inx3; FB:FBgn0265274
inferred from biological aspect of ancestor with PANTHER:PTN000934659
(assigned by GO_Central )
Cellular Component (3 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
(assigned by UniProt )
inferred from direct assay
inferred from direct assay
(assigned by UniProt )
inferred from direct assay
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000223951
(assigned by GO_Central )
non-traceable author statement
(assigned by UniProt )
inferred from biological aspect of ancestor with PANTHER:PTN000223951
(assigned by GO_Central )
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
pole plasm

Comment: maternally deposited

organism

Comment: maternally deposited

Additional Descriptive Data

Transcript is concentrated in the pole cells from the syncytial blastoderm stage through gonad formation. Transcript is also detectable in the spermatogonia located at the apical region of adult testes.

Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

Protein is detected in discrete patches on the surface of early spermatogonia. While cell surface staining is more diffuse during later stages of spermatogenesis, protein is concentrated at the interfaces between germ cells and the somatic support cells.Protein is detected on the cell surface of germ cells in the ovary and is particularly concentrated at the interface of follicle cells and germ cells.

Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
(assigned by UniProt )
inferred from direct assay
inferred from direct assay
(assigned by UniProt )
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\zpg 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
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
FlyExpress - Embryonic expression images (BDGP data)
  • Stages(s) 1-3
  • Stages(s) 4-6
  • Stages(s) 9-10
  • Stages(s) 11-12
  • Stages(s) 13-16
Alleles, Insertions, and Transgenic Constructs
Classical and Insertion Alleles ( 16 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 10 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of zpg
Transgenic constructs containing regulatory region of zpg
Deletions and Duplications ( 3 )
Phenotypes
For more details about a specific phenotype click on the relevant allele symbol.
Lethality
Allele
Sterility
Allele
Other Phenotypes
Allele
Phenotype manifest in
Allele
Orthologs
Human Orthologs (via DIOPT v7.1)
Homo sapiens (Human) (0)
No records found.
Model Organism Orthologs (via DIOPT v7.1)
Mus musculus (laboratory mouse) (0)
No records found.
Rattus norvegicus (Norway rat) (0)
No records found.
Xenopus tropicalis (Western clawed frog) (0)
No records found.
Danio rerio (Zebrafish) (2)
1 of 15
Yes
Yes
1 of 15
Yes
Yes
Caenorhabditis elegans (Nematode, roundworm) (25)
5 of 15
Yes
Yes
5 of 15
Yes
Yes
5 of 15
Yes
Yes
5 of 15
Yes
No
4 of 15
No
No
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
No
4 of 15
No
No
3 of 15
No
Yes
3 of 15
No
No
3 of 15
No
Yes
3 of 15
No
Yes
3 of 15
No
No
3 of 15
No
Yes
3 of 15
No
No
3 of 15
No
Yes
3 of 15
No
No
2 of 15
No
Yes
2 of 15
No
Yes
2 of 15
No
Yes
2 of 15
No
Yes
Arabidopsis thaliana (thale-cress) (0)
No records found.
Saccharomyces cerevisiae (Brewer's yeast) (0)
No records found.
Schizosaccharomyces pombe (Fission yeast) (0)
No records found.
Orthologs in Drosophila Species (via OrthoDB v9.1) ( EOG09190A19 )
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
Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG091505AJ )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Musca domestica
House fly
Glossina morsitans
Tsetse fly
Lucilia cuprina
Australian sheep blowfly
Aedes aegypti
Yellow fever mosquito
Anopheles darlingi
American malaria mosquito
Anopheles gambiae
Malaria mosquito
Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( None identified )
No non-Dipteran orthologies identified
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( None identified )
No non-Insect Arthropod orthologies identified
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( None identified )
No non-Arthropod Metazoa orthologies identified
Paralogs
Paralogs (via DIOPT v7.1)
Drosophila melanogaster (Fruit fly) (7)
6 of 10
5 of 10
5 of 10
5 of 10
5 of 10
5 of 10
4 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 v7.1 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
    esyN Network Diagram
    Interactions Browser
    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.
    MIST (genetic) - 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

    3-17

    Cytogenetic map
    Sequence location
    3L:6,604,366..6,606,032 [-]
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    65B5-65B5
    Limits computationally determined from genome sequence between P{PZ}l(3)0209402094 and P{lacW}l(3)L4060L4060
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Location
    Left of (cM)
    Right of (cM)
    Notes
    Stocks and Reagents
    Stocks (11)
    Genomic Clones (16)
     

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

    cDNA Clones (37)
     

    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)
    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: inx4 CG10125

    Source for database merge of

    Source for merge of: zpg inx4

    Additional comments
    Other Comments

    zpg is required in the germline for germline stem cell maintenance and differentiation in the testis. Together with Inx2 protein located on the soma side, it forms a heterotypic gap junction which links the soma and the germline.

    Expression is enriched in embryonic gonads.

    Female germline stem cells in zpg mutants can divide, but the daughter cell normally destined to differentiate dies.

    zpg is required for the survival of differentiating early germ cells during gametogenesis in both sexes.

    Adult zpg mutant gonads contain small numbers of early germ cells, which resemble stem cells or early spermatogonia or oogonia, but lack later stages of germ cell differentiation.

    Flies mutant for zpg are viable but sterile with very small gonads. In zpg mutant testes or ovaries, germline stem cells appear to divide but the early germ cells fail to differentiate, but rather, form small clusters and undergo apoptosis, as observed by staining with acridine orange.

    Origin and Etymology
    Discoverer
    Etymology
    Identification
    External Crossreferences and Linkouts ( 37 )
    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
    UniProt/TrEMBL - Automatically annotated and unreviewed 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
    Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
    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
    InterPro - A database of protein families, domains and functional sites
    KEGG Genes - Molecular building blocks of life in the genomic space.
    modMine - A data warehouse for the modENCODE project
    Linkouts
    BioGRID - A database of protein and genetic interactions.
    DPiM - Drosophila Protein interaction map
    DroID - A comprehensive database of gene and protein interactions.
    DRSC - Results frm RNAi screens
    FLIGHT - Cell culture data for RNAi and other high-throughput technologies
    FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
    FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
    FlyMine - An integrated database for Drosophila genomics
    Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
    InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
    MIST (genetic) - An integrated Molecular Interaction Database
    Synonyms and Secondary IDs (12)
    Datasets (0)
    Study focus (0)
    Experimental Role
    Project
    Project Type
    Title
    References (72)