FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\Atg2
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General Information
Symbol
Dmel\Atg2
Species
D. melanogaster
Name
Autophagy-related 2
Annotation Symbol
CG1241
Feature Type
FlyBase ID
FBgn0044452
Gene Model Status
Stock Availability
Gene Summary
Autophagy-related 2 (Atg2) encodes a protein known to be required for autophagy. [Date last reviewed: 2019-03-07] (FlyBase Gene Snapshot)
Also Known As

Autophagy-specific gene 2

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-4
RefSeq locus
NT_037436 REGION:2774338..2780677
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (17 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 (13 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
inferred from mutant phenotype
involved_in glycophagy
inferred from mutant phenotype
inferred from mutant phenotype
involved_in mitophagy
inferred from mutant phenotype
involved_in wound healing
inferred from high throughput mutant phenotype
Terms Based on Predictions or Assertions (7 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000324023
inferred from biological aspect of ancestor with PANTHER:PTN000324023
involved_in autophagy
inferred from electronic annotation with InterPro:IPR026849
involved_in glycophagy
inferred from biological aspect of ancestor with PANTHER:PTN000324023
involved_in pexophagy
inferred from biological aspect of ancestor with PANTHER:PTN000324023
inferred from biological aspect of ancestor with PANTHER:PTN000324023
involved_in reticulophagy
inferred from biological aspect of ancestor with PANTHER:PTN000324023
Cellular Component (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:PTN000324023
inferred from sequence or structural similarity with SGD:S000005186
is_active_in phagophore
inferred from biological aspect of ancestor with PANTHER:PTN000324023
Gene Group (FlyBase)
Protein Family (UniProt)
-
Protein Signatures (InterPro)
Summaries
Gene Snapshot
Autophagy-related 2 (Atg2) encodes a protein known to be required for autophagy. [Date last reviewed: 2019-03-07]
Gene Group (FlyBase)
AUTOPHAGY-RELATED GENES -
The Autophagy-related genes (Atg), characterized extensively in yeast, are a set of approximately twenty evolutionarily conserved genes required for autophagy. Autophagy (specifically, macroautophagy) is the process of bulk degradation of cytoplasmic material. It takes place by the assembly of a double membrane vesicle, the autophagosome, which delivers cargo to the lysosome for recycling. (Adapted from FBrf0219844 and FBrf020902).
Summary (Interactive Fly)

a component of the Vps34 lipid kinase complex that is required for the formation of PI3P - functions in vesicle trafficking including autophagy and endocytosis - involved in stress, metabolic and immune signaling pathways - binds to Rab18 - promotes niche occupancy by bam mutant stem cells - Zonda, an Atg6 interactor, is critically required for starvation-induced autophagy - UVRAG interacts with Atg6 and together they promote autophagy - required for endolysosomal degradation and epithelial polarity during wing development

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

Please see the JBrowse view of Dmel\Atg2 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 Q9VZX7)

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

Gene model reviewed during 5.46

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0072970
6259
1906
FBtr0333441
6266
1906
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
FBpp0072840
214.9
1906
5.33
FBpp0305632
214.9
1906
5.33
Polypeptides with Identical Sequences

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

1906 aa isoforms: Atg2-PA, Atg2-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\Atg2 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).

-0.57

Transcript Expression
northern blot
Stage
Tissue/Position (including subcellular localization)
Reference
RT-PCR
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

qRT-PCR of adult female heads assayed at weekly intervals shows that transcript levels remain fairly constant.

The expression of this gene along with several others is induced in salivary glands in pupae at the time of head eversion. This stage is characterized by an increase in the ecdysone titer as well as large amounts of cell death in this tissue.

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

JBrowse - Visual display of RNA-Seq signals

View Dmel\Atg2 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
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 6 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 9 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Atg2
Transgenic constructs containing regulatory region of Atg2
Aberrations (Deficiencies and Duplications) ( 1 )
Inferred from experimentation ( 1 )
Inferred from location ( 5 )
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
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) (4)
14 of 14
Yes
Yes
13 of 14
No
Yes
1 of 14
No
No
1  
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
11 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (3)
13 of 14
Yes
Yes
13 of 14
Yes
Yes
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (4)
11 of 13
Yes
Yes
10 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (3)
12 of 14
Yes
Yes
7 of 14
No
Yes
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (2)
13 of 14
Yes
Yes
1 of 14
No
No
Anopheles gambiae (African malaria mosquito) (1)
11 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (3)
8 of 13
Yes
Yes
1 of 13
No
No
1 of 13
No
No
Saccharomyces cerevisiae (Brewer's yeast) (2)
8 of 13
Yes
Yes
1 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (2)
7 of 12
Yes
Yes
1 of 12
No
No
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Atg2. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
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 ( 0 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 3 )
    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
    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
    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
    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)
    3L
    Recombination map
    3-4
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    62F3-62F4
    Limits computationally determined from genome sequence between P{PZ}Spn06911 and P{PZ}l(3)0680306803
    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 (14)
     

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

    cDNA Clones (27)
     

    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

          Source for merge of: CG1241 EP3697

          Additional comments
          Nomenclature History
          Source for database identify of

          Source for identity of: Atg2 CG1241

          Nomenclature comments
          Etymology
          Synonyms and Secondary IDs (7)
          Reported As
          Symbol Synonym
          Atg2
          (Bradic and Rewitz, 2025, Qin et al., 2025, Zhang et al., 2025, Isaacson et al., 2024, Xu et al., 2024, Bland, 2023, Demir and Kacew, 2023, Ikegawa et al., 2023, Wang et al., 2023, Ciesielski et al., 2022, Huang et al., 2022, Marshall and Dionne, 2022, Varga et al., 2022, Xu et al., 2022, Bonfini et al., 2021, Gerenu et al., 2021, Laczkó-Dobos et al., 2021, Rosendo Machado et al., 2021, Barthez et al., 2020, Cunningham et al., 2020, Funikov et al., 2020, Gohel et al., 2020, Rodriguez-Fernandez et al., 2020, Xu et al., 2020, Aparicio et al., 2019, Meltzer et al., 2019, Xu et al., 2019, Billes et al., 2018, Clark et al., 2018, Gene Disruption Project members, 2018-, O'Keefe and Denton, 2018, Pandey et al., 2018, Bali and Shravage, 2017, Galluzzi et al., 2017, Kim et al., 2017, Lei et al., 2017, Manent et al., 2017, Péan et al., 2017, Transgenic RNAi Project members, 2017-, Kuleesha et al., 2016, Zheng et al., 2016, Denton et al., 2015, Kim et al., 2015, Kuhn et al., 2015, Nagy et al., 2015, Rodriguez-Fernandez and Dell'Angelica, 2015, Rojas-Ríos et al., 2015, Xu et al., 2015, Zang et al., 2015, Zhang and Baehrecke, 2015, Zirin et al., 2015, Banreti et al., 2014, Mulakkal et al., 2014, Nagy et al., 2014, Chang et al., 2013, Denton et al., 2013, Takáts et al., 2013, Zirin et al., 2013, Denton et al., 2012, Érdi et al., 2012, Garcia et al., 2012, Japanese National Institute of Genetics, 2012.5.21, Pircs et al., 2012, Qin et al., 2011, Tian et al., 2011, Chang and Neufeld, 2010, Kim et al., 2010, Denton et al., 2009, Liu and Lehmann, 2008, Simonsen et al., 2008, Martin et al., 2007, Zeitouni et al., 2007)
          EP3697
          Name Synonyms
          Autophagy-related 2
          Secondary FlyBase IDs
          • FBgn0035373
          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/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
          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)
          Linkouts
          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)
          Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
          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 (131)