FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\g
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General Information
Symbol
Dmel\g
Species
D. melanogaster
Name
garnet
Annotation Symbol
CG10986
Feature Type
FlyBase ID
FBgn0001087
Gene Model Status
Stock Availability
Gene Summary
garnet (g) encodes a protein that forms the Adaptor protein 3 (AP-3) complex together with the other subunits encoded by or, rb and cm. These complexes select cargo for inclusion into vesicles for transport within the cell. AP-3 delivers protein cargo to a number of specialized organelles including pigment granules, late endosomes, lysosomes and synaptic vesicles. AP-3 genes were first found through defects in pigment granules that alter eye color. [Date last reviewed: 2019-03-07] (FlyBase Gene Snapshot)
Also Known As

AP-3δ, apl5

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-45
RefSeq locus
NC_004354 REGION:13727204..13736278
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (29 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from sequence or structural similarity with FLYBASE:AP-2α; FB:FBgn0264855
Biological Process (19 terms)
Terms Based on Experimental Evidence (8 terms)
CV Term
Evidence
References
inferred from genetic interaction with FLYBASE:p; FB:FBgn0086679
inferred from mutant phenotype
involved_in endocytosis
inferred from mutant phenotype
involved_in exocytosis
inferred from mutant phenotype
inferred from expression pattern
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (11 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000513028
non-traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN000513025
inferred from electronic annotation with InterPro:IPR002553
traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN000513025
involved_in protein transport
inferred from electronic annotation with InterPro:IPR010474, InterPro:IPR017105
inferred from biological aspect of ancestor with PANTHER:PTN000513028
inferred from biological aspect of ancestor with PANTHER:PTN000513028
inferred from electronic annotation with InterPro:IPR002553
Cellular Component (9 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
inferred from direct assay
located_in Golgi stack
inferred from direct assay
located_in late endosome
inferred from direct assay
Terms Based on Predictions or Assertions (6 terms)
CV Term
Evidence
References
non-traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN000513025
inferred from electronic annotation with InterPro:IPR010474, InterPro:IPR017105
is_active_in endosome membrane
inferred from biological aspect of ancestor with PANTHER:PTN000513025
non-traceable author statement
inferred from electronic annotation with InterPro:IPR002553
inferred from biological aspect of ancestor with PANTHER:PTN000513028
is_active_in terminal bouton
inferred from biological aspect of ancestor with PANTHER:PTN000513028
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the adaptor complexes large subunit family. (P54362)
Summaries
Gene Snapshot
garnet (g) encodes a protein that forms the Adaptor protein 3 (AP-3) complex together with the other subunits encoded by or, rb and cm. These complexes select cargo for inclusion into vesicles for transport within the cell. AP-3 delivers protein cargo to a number of specialized organelles including pigment granules, late endosomes, lysosomes and synaptic vesicles. AP-3 genes were first found through defects in pigment granules that alter eye color. [Date last reviewed: 2019-03-07]
Gene Group (FlyBase)
ADAPTOR PROTEIN COMPLEX 3 -
Adaptor protein (AP) complexes select cargo for inclusion into coated vesicles in the late secretory and endocytic pathways. AP complexes are heterotetramers. AP-3 is associated with endosomes and, to a less extent, the trans-Golgi network and appears to function independently of clathrin. Drosophila AP-3 genes were first linked to defects in the biogenesis of visual pigment granules. (Adapted from FBrf0129983 and PMID:15066634).
Protein Function (UniProtKB)
Part of the AP-3 complex, an adapter-related complex which is not clathrin-associated. The complex is associated with the Golgi region as well as more peripheral structures. It facilitates the budding of vesicles from the Golgi membrane and may be directly involved in trafficking to lysosomes (By similarity). May be a coat protein involved in the formation of specialized structures like pigment granules.
(UniProt, P54362)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
g: garnet
Eye color brownish, darkening with age; both pteridine and ommochrome pigments variably reduced in different alleles, giving rise to such descriptions as deep purplish ruby, pinkish, brownish, yellowish ruby, orange, etc. Nolte (1959, Heredity 13: 233-41) measured both pigments spectroscopically for g alleles (g1,g2,g3,g4) and detected subtle differences. Hexter (1963, Proc. Nat. Acad. Sci. USA 50: 372-79) claims g1,g2,g3, and g4 indistinguishable phenotypically but g53d to be orange eyed and easily separable. Earlier authors claims g2 lighter than g1. Pigmentation of Malpighian tubules also reduced (Brehme and Demerec, 1942, Growth 6: 351-56). Eye color (g2) autonomous in transplants into wild type host (Beadle and Ephrussi, 1936, Genetics 21: 225-47).
Gene Model and Products
Number of Transcripts
3
Number of Unique Polypeptides
3

Please see the JBrowse view of Dmel\g 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 P54362)

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 5.39

Low-frequency RNA-Seq exon junction(s) not annotated.

Annotated transcripts do not represent all possible combinations of alternative exons and/or alternative promoters.

Gene model reviewed during 5.45

Gene model reviewed during 5.54

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0073842
3853
1034
FBtr0331709
4147
1033
FBtr0331710
3993
967
Additional Transcript Data and Comments
Reported size (kB)

4.0, 3.8 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0073673
114.8
1034
7.31
FBpp0304098
114.7
1033
7.16
FBpp0304099
107.0
967
6.89
Polypeptides with Identical Sequences

None of the polypeptides share 100% sequence identity.

Additional Polypeptide Data and Comments
Reported size (kDa)

1034 (aa); 115 (kD predicted)

Comments
External Data
Subunit Structure (UniProtKB)

Adaptor protein complex 3 (AP-3) is a heterotetramer composed of two large chains (delta and beta3), a medium chain (mu3) and a small chain (sigma3).

(UniProt, P54362)
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\g 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).

-1.03

Transcript Expression
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
located_in Golgi stack
inferred from direct assay
located_in late endosome
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\g 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 ( 65 )
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 g
Transgenic constructs containing regulatory region of g
Aberrations (Deficiencies and Duplications) ( 54 )
Inferred from experimentation ( 54 )
Inferred from location ( 7 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
Phenotypes
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (15)
12 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
1  
2 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1  
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (11)
13 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (13)
11 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (12)
8 of 13
Yes
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (13)
12 of 14
Yes
Yes
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (8)
13 of 14
Yes
Yes
2 of 14
No
No
2 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Anopheles gambiae (African malaria mosquito) (9)
12 of 12
Yes
Yes
2 of 12
No
No
Arabidopsis thaliana (thale-cress) (18)
11 of 13
Yes
Yes
2 of 13
No
No
2 of 13
No
No
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Saccharomyces cerevisiae (Brewer's yeast) (7)
11 of 13
Yes
Yes
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (7)
10 of 12
Yes
Yes
2 of 12
No
No
2 of 12
No
No
1 of 12
No
No
1 of 12
No
No
1 of 12
No
No
1 of 12
No
No
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:g. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (7)
2 of 13
2 of 13
1 of 13
1 of 13
1 of 13
1 of 13
1 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 ( 0 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 6 )
    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
    protein-protein
    Physical Interaction
    Assay
    References
    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
    suppressible
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    External Data
    Subunit Structure (UniProtKB)
    Adaptor protein complex 3 (AP-3) is a heterotetramer composed of two large chains (delta and beta3), a medium chain (mu3) and a small chain (sigma3).
    (UniProt, P54362 )
    Linkouts
    BioGRID - A database of protein and genetic interactions.
    DroID - A comprehensive database of gene and protein interactions.
    MIST (genetic) - An integrated Molecular Interaction Database
    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)
    X
    Recombination map
    1-45
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    12B4-12B4
    Limits computationally determined from genome sequence between P{EP}NFATEP1390&P{EP}CG11164EP1396 and P{EP}gEP514
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    12B6-12B7
    Determined by comparing Celera genomic sequence with sequence from BDGP BAC and P1 clones.
    Experimentally Determined Recombination Data
    Location
    Notes
    Stocks and Reagents
    Stocks (73)
    Genomic Clones (21)
    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 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

          Shows genomic imprinting on Dp(1;f)LJ9. These variegating phenotypes persist for one generation only, i.e. is reset by passage through the germ line. The imprint is a response to the physiological sex of the parent, and does not depend on the particular allele of g opposite Dp(1;f)LJ9. Factors that affect position effect variegation influence the somatic expression but not the establishment of the imprinting.

          The eye pigmentation defect of g mutants suggests the protein is required for proper biogenesis of eye pigment granules.

          Eye color brownish, darkening with age; both pteridine and ommochrome pigments variably reduced in different alleles, giving rise to such descriptions as deep purplish ruby, pinkish, brownish, yellowish ruby, orange, etc.

          Lesions in g reduce or eliminate pigmentation in the eyes and ocelli and block pigmentation of the fat body and tubules: g is required for normal pigmentation of all four tissues.

          Pteridines (neodrosopterin, drosopterin, isodrosopterin, aurodrosopterin, 6-acetyl-dihydrohomopterin, sepiapterin, dihydrobiopterin, biopterin, pterin and isoxanthopterin) have been quantified in single and double mutants.

          It is likely that this gene is required for the normal transport of eye-pigment precursors.

          Pigmentation of Malpighian tubules also reduced.

          Relationship to Other Genes
          Source for database merge of

          Source for merge of: g CG11197

          Source for merge of: g CG10986

          Additional comments
          Nomenclature History
          Source for database identify of
          Nomenclature comments
          Etymology
          Synonyms and Secondary IDs (15)
          Reported As
          Secondary FlyBase IDs
          • FBgn0001800
          • FBgn0030516
          • FBgn0030517
          Datasets (0)
          Study focus (0)
          Experimental Role
          Project
          Project Type
          Title
          Study result (0)
          Result
          Result Type
          Title
          External Crossreferences and Linkouts ( 53 )
          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/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
          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
          KEGG Genes - Molecular building blocks of life in the genomic space.
          MARRVEL_MODEL - MARRVEL (model organism gene)
          Linkouts
          BioGRID - A database of protein and genetic interactions.
          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)
          KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
          MIST (genetic) - An integrated Molecular Interaction Database
          MIST (protein-protein) - An integrated Molecular Interaction Database
          References (217)