FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\Vha16-1
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General Information
Symbol
Dmel\Vha16-1
Species
D. melanogaster
Name
Vacuolar H+ ATPase 16kD subunit 1
Annotation Symbol
CG3161
Feature Type
FlyBase ID
FBgn0262736
Gene Model Status
Stock Availability
Gene Summary
Vacuolar H[+] ATPase 16kD subunit 1 (Vha16-1) encodes the proteolipid component of V-ATPase, which is a multi-functional channel protein. It contributes to vesicle-membrane fusion, hydrophilic molecule transport and intercellular communication. [Date last reviewed: 2019-09-26] (FlyBase Gene Snapshot)
Also Known As

Vha16, ductin, MRE15, V-ATPase, Vacuolar H+ ATPase 16kD subunit

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
2-55
RefSeq locus
NT_033778 REGION:6625242..6633090
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (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
Biological Process (2 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from mutant phenotype
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
Cellular Component (6 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
located_in fusome
inferred from direct assay
Terms Based on Predictions or Assertions (4 terms)
CV Term
Evidence
References
Protein Family (UniProt)
Belongs to the V-ATPase proteolipid subunit family. (P23380)
Catalytic Activity (EC/Rhea)
proton-transporting ATPase activity, rotational mechanism
RHEA 57721:
Summaries
Gene Snapshot
Vacuolar H[+] ATPase 16kD subunit 1 (Vha16-1) encodes the proteolipid component of V-ATPase, which is a multi-functional channel protein. It contributes to vesicle-membrane fusion, hydrophilic molecule transport and intercellular communication. [Date last reviewed: 2019-09-26]
Gene Group (FlyBase)
VACUOLAR ATPASE V0 DOMAIN SUBUNITS -
The V0 domain of V-ATPases is the integral membrane domain responsible for the translocation of protons across the membrane. It is assembled from four to five different subunits (a, c, c'', d and e in D.mel) that are expressed as multiple isoforms in a tissue-specific manner. (Adapted from PMID:20450191 and FBrf0188241).
Protein Function (UniProtKB)
Proton-conducting pore forming subunit of the V0 complex of vacuolar(H+)-ATPase (V-ATPase), a multisubunit enzyme composed of a peripheral complex (V1) that hydrolyzes ATP and a membrane integral complex (V0) that translocates protons (By similarity). V-ATPase is responsible for acidifying and maintaining the pH of intracellular compartments and in some cell types, is targeted to the plasma membrane, where it is responsible for acidifying the extracellular environment (PubMed:32269334). In enterocytes, acts as part of a pHCl-2 sensory pathway which mediates Tor-dependent larval growth and metabolism in response to zinc availability (PubMed:32269334). Likely acts in maintaining enterocyte lysosomal acidification which consequently promotes Tor activation at the lysosome membrane (PubMed:32269334).
(UniProt, P23380)
Gene Model and Products
Number of Transcripts
4
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Vha16-1 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 P23380)

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.

Annotated transcripts do not represent all supported alternative splices within 5' UTR.

Gene model reviewed during 5.48

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0086150
2833
159
FBtr0086151
2798
159
FBtr0086152
2981
159
FBtr0086153
2816
159
Additional Transcript Data and Comments
Reported size (kB)

3.1 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0085483
16.3
159
8.78
FBpp0085484
16.3
159
8.78
FBpp0085485
16.3
159
8.78
FBpp0085486
16.3
159
8.78
Polypeptides with Identical Sequences

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

Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Subunit Structure (UniProtKB)

V-ATPase is a heteromultimeric enzyme made up of two complexes: the ATP-hydrolytic V1 complex and the proton translocation V0 complex (By similarity). The V1 complex consists of three catalytic AB heterodimers that form a heterohexamer, three peripheral stalks each consisting of EG heterodimers, one central rotor including subunits D and F, and the regulatory subunits C and H (By similarity). The proton translocation complex V0 consists of the proton transport subunit a, a ring of proteolipid subunits c9c'', rotary subunit d, subunits e and f, and the accessory subunits VhaAC45 and ATP6AP2 (By similarity).

(UniProt, P23380)
Linkouts
Sequences Consistent with the Gene Model
Nucleotide / Polypeptide Records
 
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Vha16-1 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).

-1.08

Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
main body follicle cell | subset

Comment: expression in cells on ventral side of oocyte

mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
western blot
Stage
Tissue/Position (including subcellular localization)
Reference
adult head

Comment: predominantly 21 kD isoform

adult thorax

Comment: predominantly 16 kD isoform

Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
located_in fusome
inferred from direct assay
Expression Deduced from Reporters
Stage
Tissue/Position (including subcellular localization)
Reference
Stage
Tissue/Position (including subcellular localization)
Reference
adult brain cell body rind

Comment: adult brain cortex high expression in these neurons (too far from the fan-shaped body to be noduli)

High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\Vha16-1 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
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
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 52 )
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 Vha16-1
Transgenic constructs containing regulatory region of Vha16-1
Aberrations (Deficiencies and Duplications) ( 1 )
Inferred from experimentation ( 1 )
Inferred from location ( 6 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
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
anterior fascicle & synapse, with Scer\GAL4elav-C155
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (5)
14 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
1  
2 of 14
No
No
1  
2 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) (3)
14 of 14
Yes
Yes
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (5)
13 of 14
Yes
Yes
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (2)
3 of 13
Yes
Yes
1 of 13
No
No
Danio rerio (Zebrafish) (6)
14 of 14
Yes
Yes
14 of 14
Yes
Yes
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (5)
13 of 14
Yes
Yes
13 of 14
Yes
Yes
11 of 14
No
Yes
2 of 14
No
No
1 of 14
No
No
Anopheles gambiae (African malaria mosquito) (3)
Arabidopsis thaliana (thale-cress) (9)
12 of 13
Yes
Yes
12 of 13
Yes
Yes
12 of 13
Yes
Yes
12 of 13
Yes
Yes
12 of 13
Yes
Yes
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
Saccharomyces cerevisiae (Brewer's yeast) (4)
13 of 13
Yes
Yes
7 of 13
No
Yes
2 of 13
No
No
1 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (3)
12 of 12
Yes
Yes
7 of 12
No
Yes
2 of 12
No
No
Escherichia coli (enterobacterium) (1)
1 of 11
Yes
No
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Vha16-1. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (7)
13 of 13
11 of 13
11 of 13
10 of 13
4 of 13
4 of 13
2 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 ( 1 )
Human Ortholog
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 2 )
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

Please see the Physical Interaction reports below for full details
RNA-protein
Physical Interaction
Assay
References
Summary of Genetic Interactions
Interaction Browsers
Starting gene(s)
Interaction type
Interacting gene(s)
Reference
Starting gene(s)
Interaction type
Interacting gene(s)
Reference
External Data
Subunit Structure (UniProtKB)
V-ATPase is a heteromultimeric enzyme made up of two complexes: the ATP-hydrolytic V1 complex and the proton translocation V0 complex (By similarity). The V1 complex consists of three catalytic AB heterodimers that form a heterohexamer, three peripheral stalks each consisting of EG heterodimers, one central rotor including subunits D and F, and the regulatory subunits C and H (By similarity). The proton translocation complex V0 consists of the proton transport subunit a, a ring of proteolipid subunits c9c'', rotary subunit d, subunits e and f, and the accessory subunits VhaAC45 and ATP6AP2 (By similarity).
(UniProt, P23380 )
Linkouts
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
KEGG Metabolic Pathways - A collection of manually drawn metabolic pathway maps representing knowledge of molecular interaction, reaction and relation networks.
External Data
Linkouts
KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
Class of Gene
Genomic Location and Detailed Mapping Data
Chromosome (arm)
2R
Recombination map
2-55
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
42B2-42B2
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
42B1-42B2
42B1-42B2
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (20)
Genomic Clones (19)
cDNA Clones (553)
 

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)
    Other clones
    RNAi and Array Information
    Linkouts
    Antibody Information
    Laboratory Generated Antibodies
     
    Commercially Available Antibodies
     
    Cell Line Information
    Publicly Available Cell Lines
     
      Other Stable Cell Lines
       
        Other Comments

        dsRNA made from templates generated with primers directed against Vha16 that is transfected into S2 treated with Listeria monocytogenes reveals Vha16 to be involved in Listeria monocytogenes entry and vacuolar escape.

        Vha16 has been cloned and sequenced.

        Vha16 plays a role in gap junctional communication in the follicles. Evidence suggests that the Vha16 gene product may double as a component of an ATP driven proton pump and a component of a passive, non-selective, channel.

        A Vha16 cDNA has been cloned and sequenced.

        Relationship to Other Genes
        Source for database merge of

        Source for merge of: Vha16 CG3161

        Source for merge of: Vha16 BcDNA:SD02875

        Source for merge of: Vha16-1 MRE15

        Additional comments

        MRE15 is part of the 3' UTR of Vha16-1.

        MRE15 corresponds to a portion of the 3' UTR of Vha16-1.

        Source for merge of Vha16 BcDNA:SD02875 was a shared cDNA ( date:020730 ).

        Nomenclature History
        Source for database identify of
        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (24)
        Reported As
        Symbol Synonym
        BcDNA:SD02875
        DucC
        EP2372
        Vhac
        Name Synonyms
        Ductin subunit C
        Vacuolar H+ ATPase 16kD subunit
        Vacuolar H+ ATPase 16kD subunit 1
        Vacuolar H+ ATPase subunit 16-1
        Vacuolar H+-ATPase c subunit
        c subunit
        ductin, vacuolar H(+)-ATPase subunit C proteolipid
        mRNA-like ncRNA in embryogenesis 15
        Secondary FlyBase IDs
        • FBgn0004145
        • FBgn0011275
        • FBgn0015839
        • FBgn0033078
        • FBgn0044467
        • FBgn0046764
        • FBgn0086547
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 70 )
        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 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
        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.
        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
        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.
        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
        FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
        iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
        KEGG Metabolic Pathways - A collection of manually drawn metabolic pathway maps representing knowledge of molecular interaction, reaction and relation networks.
        KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
        MIST (protein-protein) - An integrated Molecular Interaction Database
        References (138)