FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
Gene: Dmel\dor
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General Information
Symbol
Dmel\dor
Species
D. melanogaster
Name
deep orange
Annotation Symbol
CG3093
Feature Type
FlyBase ID
FBgn0000482
Gene Model Status
Stock Availability
Gene Summary
Core component of the class C core vacuole/endosome tethering (CORVET) and the homotypic fusion and vacuole protein sorting (HOPS) tethering complexes involved in endo-lysosomal vesicle trafficking and lysosome biogenesis (PubMed:10549280, PubMed:24554766, PubMed:25422373, PubMed:27253064, PubMed:28063257, PubMed:31194677, PubMed:9065698). The CORVET complex facilitates docking and fusion of endosomal vesicles during endosome maturation, acts upstream of HOPS, but is not involved in autophagic flux (PubMed:10549280, PubMed:25422373, PubMed:27253064, PubMed:31194677). The CORVET complex may cooperate with the early endosomal tether Rbsn-5 to mediate endosomal fusion (PubMed:27253064). The HOPS complex facilitates docking and fusion of lysosomes with late endosomes and several other types of vesicles (PubMed:24554766, PubMed:28063257, PubMed:31194677). The HOPS complex is also involved in autophagy and crinophagy (the elimination of unused secretory granules through their fusion with lysosomes) (PubMed:24554766, PubMed:31194677). The HOPS complex mediates autophagocitic flux, probably by binding autophagosome-associated Syx17/syntaxin 17, promoting assembly of the trans-SNARE complex and instigating autophagosome-lysosome fusion (PubMed:24554766, PubMed:28063257). Independent of Syx17/syntaxin 17, HOPS is involved in biosynthetic transport to lysosomes and lysosome-related organelles such as eye-pigment granules (PubMed:10549280, PubMed:24554766, PubMed:31194677). Required for endocytic degradation of boss/bride of sevenless and N/Notch in developing ommatidia (PubMed:24554766). Required for autophagocytosis-dependent remodeling of myofibrils and transverse-tubules (T-tubules) during metamorphosis (PubMed:28063257). In larval neuromuscular junctions, essential for endosomal sorting that traffics old or dysfunctional synaptic vesicle proteins through a degradative endolysosomal route (PubMed:25422373). Required to maintain normal levels of rush, which functions in endosome formation and trafficking (PubMed:22160599). (UniProt, Q24314)
Contribute a Gene Snapshot for this gene.
Also Known As

Vps18, EG:171E4.1 , l(1)7, Dof

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-0.2
RefSeq locus
NC_004354 REGION:1665052..1668451
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (44 terms)
Molecular Function (5 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from physical interaction with UniProtKB:Q9V3I2
inferred from physical interaction with UniProtKB:Q9VRX2
inferred from physical interaction with UniProtKB:Q9Y1I2
contributes_to syntaxin binding
inferred from physical interaction with FLYBASE:Syx17; FB:FBgn0035540
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with UniProtKB:Q9P253
inferred from sequence model
Biological Process (30 terms)
Terms Based on Experimental Evidence (21 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
involved_in cell division
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
involved_in endocytosis
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from direct assay
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (10 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with SGD:S000004138
inferred from biological aspect of ancestor with PANTHER:PTN000595174
inferred from biological aspect of ancestor with PANTHER:PTN001154188
inferred from electronic annotation with InterPro:IPR000547
inferred from biological aspect of ancestor with PANTHER:PTN001154188
involved_in organelle fusion
inferred from biological aspect of ancestor with PANTHER:PTN000595174
inferred from sequence or structural similarity with UniProtKB:Q9P253
inferred from sequence or structural similarity with SGD:S000004138
inferred from biological aspect of ancestor with PANTHER:PTN000595174
inferred from electronic annotation with InterPro:IPR000547
Cellular Component (9 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
located_in endosome
inferred from direct assay
part_of HOPS complex
inferred from mutant phenotype
inferred from direct assay
inferred from physical interaction with UniProtKB:Q5KU39, UniProtKB:Q9VHG1, UniProtKB:Q9Y1I2
located_in lysosome
inferred from direct assay
inferred from mutant phenotype
inferred from direct assay
located_in synapse
inferred from mutant phenotype
Terms Based on Predictions or Assertions (4 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with SGD:S000004138
part_of HOPS complex
inferred from sequence or structural similarity with SGD:S000004138
inferred from experiment
inferred from experiment
Protein Family (UniProt)
Belongs to the VPS18 family. (Q24314)
Summaries
Gene Group (FlyBase)
VPS-C COMPLEX SUBUNITS -
The heterohexameric VPS-C complexes, HOPS and CORVET have been extensively characterised in yeast. They interact with SNAREs and Rabs to promote vesicle tethering. The CORVET complex is involved in early endosome fusion, interacting with Rab5-GTP. The HOPS complex interacts with Rab7-GTP on late endosomes (multivesicular bodies) to promote fusion with the lysosomal compartment (and vacuoles) and also autophagosome-lysosome fusion. The VPS-C complexes share common subunits and CORVET to HOPS conversion intermediates (i-CORVET and i-HOPS) have been proposed to accompany early to late endosome maturation. (Adapted from PMID:19575650 and FBrf0223135).
UNCLASSIFIED RING DOMAIN UBIQUITIN LIGASES -
This group comprises RING domain ubiquitin ligases that do not classify under other groups in FlyBase.
Protein Function (UniProtKB)
Core component of the class C core vacuole/endosome tethering (CORVET) and the homotypic fusion and vacuole protein sorting (HOPS) tethering complexes involved in endo-lysosomal vesicle trafficking and lysosome biogenesis (PubMed:10549280, PubMed:24554766, PubMed:25422373, PubMed:27253064, PubMed:28063257, PubMed:31194677, PubMed:9065698). The CORVET complex facilitates docking and fusion of endosomal vesicles during endosome maturation, acts upstream of HOPS, but is not involved in autophagic flux (PubMed:10549280, PubMed:25422373, PubMed:27253064, PubMed:31194677). The CORVET complex may cooperate with the early endosomal tether Rbsn-5 to mediate endosomal fusion (PubMed:27253064). The HOPS complex facilitates docking and fusion of lysosomes with late endosomes and several other types of vesicles (PubMed:24554766, PubMed:28063257, PubMed:31194677). The HOPS complex is also involved in autophagy and crinophagy (the elimination of unused secretory granules through their fusion with lysosomes) (PubMed:24554766, PubMed:31194677). The HOPS complex mediates autophagocitic flux, probably by binding autophagosome-associated Syx17/syntaxin 17, promoting assembly of the trans-SNARE complex and instigating autophagosome-lysosome fusion (PubMed:24554766, PubMed:28063257). Independent of Syx17/syntaxin 17, HOPS is involved in biosynthetic transport to lysosomes and lysosome-related organelles such as eye-pigment granules (PubMed:10549280, PubMed:24554766, PubMed:31194677). Required for endocytic degradation of boss/bride of sevenless and N/Notch in developing ommatidia (PubMed:24554766). Required for autophagocytosis-dependent remodeling of myofibrils and transverse-tubules (T-tubules) during metamorphosis (PubMed:28063257). In larval neuromuscular junctions, essential for endosomal sorting that traffics old or dysfunctional synaptic vesicle proteins through a degradative endolysosomal route (PubMed:25422373). Required to maintain normal levels of rush, which functions in endosome formation and trafficking (PubMed:22160599).
(UniProt, Q24314)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
dor: deep orange
dor mutants affect a number of developmental processes; severity of effect increases with increasing developmental temperature. Eye color orange, shade depending on allele and temperature. dor reduces eye pigmentation in combination with either cn or v or with bw, indicating reduction in both drosopterins and xanthommatin. Biochemical analyses show xanthommatin and five drosopterins to be reduced to different degrees in dor; levels, but not relative proportions, change according to temperature of development (Counce, 1957, Experientia 13: 354; Puckett and Petty, 1980, Biochem. Genet. 18: 1221-28). Reciprocal transplantation experiments show that eye color is autonomous (Hadorn and Counce). dor females produce no progeny in crosses to dor males at 25, although some allelic combinations able to produce progeny at 18; and a few dor/+ daughters are produced in crosses to + males. Germ-line clones homozygous for the lethal allele dor28 produce collapsed eggs (Perriman, Egstrom, and Mahowald, 1989, Genetics 121: 333-52). The lethal embryos produced by dor mothers reach gastrulation or beyond (Hildreth and Lucchesi, 1967, Dev. Biol. 15: 536-52; Counce, 1969, DIS 44: 101-82). Maternal effect shown to be germ line autonomous by both ovarian (Garen and Gehring, 1972, Proc. Nat. Acad. Sci. USA 69: 2982-85) and pole-cell transplantation (Marsh, van Deusen, Wieschaus, and Gehring, 1977, Dev. Biol. 56: 195-99). Maternal lethal effect rescuable by injections into preblastoderm embryos of cytoplasm from unfertilized eggs of normal females (Garen and Gehring, 1972); dor+ substance present during early stages of vitellogenesis but not detected in yolk of cellular blastoderm embryos (Marsh et al., 1977). Abnormalities of dor cells in culture eliminated by extracts of normal post- but not pregastrulation embryos (Kuroda, 1977, Dev. Growth Differ. 19: 57-66). dor males show variable extents of gonadal dysgenesis depending on culture conditions and genotypic background; abnormalities range from failure of testes to attach to genital ducts to failure of one attached testis to elongate (Lucchesi, Counce, and Hildreth, 1968, J. Exp. Zool. 168: 437-50). Viability and longevity of dor homozygotes and hemizygotes variably reduced depending on allele and temperature; dorl larvae develop melanotic pseudo-tumors (Stark, 1918, J. Exp. Zool. 27: 509-29; Oftedal, 1953, Z. Indukt. Abstamm. Vererbungsl. 85: 408-22) and midgut occlusion (Russell, 1940, J. Exp. Zool. 84: 363-79), dying in late third instar (Bischoff and Lucchesi, 1971). dor/dorl lethal at 29 (Belyaeva, Aizenzon, Semeshin, Kiss, Koczka, Baritcheva, Gorelova, and Zhimulev, 1980, Chromosoma 81: 281-306). dor in combination with ry, ry2 (Lucchesi, 1968, Genetics 59: 37-44) and car (Nash, 1971, DIS 47: 73) causes lethality in pupal stage. Recovery of gynandromorphs with dor car male sectors less than in controls; bilateral gynandromorphs not observed, but distribution of male tissue resembles that of control (Grell, 1976). dor behaves as a semilethal in combination with pd and with cn bw (Lucchesi, 1968).
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\dor 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 Q24314)

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 5.42

Gene model reviewed during 5.39

Gene model reviewed during 5.45

Gene model reviewed during 5.52

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0070269
3161
1002
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
FBpp0070259
115.3
1002
5.52
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)

115 (kD observed)

1002 (aa); 115.3 (kD predicted)

Comments
External Data
Subunit Structure (UniProtKB)

Component of the class C core vacuole/endosome tethering (CORVET) complex composed of at least Vps8, dor/Vps18, car/Vps33A and Vps16A; unlike in other species, Vps11 is not part of the Drosophila complex (PubMed:27253064). Due to the reduced number of components the Drosophila CORVET complex is often referred to as the miniCORVET complex (PubMed:27253064). Interacts with car/Vps33A (PubMed:10549280). Interacts with ema (PubMed:20194640). Component of the homotypic fusion and vacuole protein sorting (HOPS) complex, composed of Vps16A, car/Vps33A, dor/Vps18, Vps39, Vps11 and lt/Vps41 (PubMed:31194677). The tethering complex core made up of Vps16A, car/Vps33A and dor/Vps18 and shared by both HOPS and CORVET, preferentially associates with CORVET-specific Vps8 over HOPS-specific lt/Vps41 (PubMed:31194677). Interacts with Syx17 (via SNARE domain); the interaction may involve multiple components of the HOPS complex and may promote assembly of the Syx17-Snap29-Vamp7 trans-SNARE complex (PubMed:24554766).

(UniProt, Q24314)
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\dor 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).

-0.18

Transcript Expression
Polypeptide Expression
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
western blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

dor protein colocalizes with internalized dextran beads for a limited time in endocytic compartments in third larval instar garland cells. dor protein partially colocalizes with hk protein and with internalized dextran beads to endosomes in Schneider2:Sev cells. hk protein is confined to the perimeter of the large endosomes while dor protein is found in the interior as well.

Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
located_in endosome
inferred from direct assay
part_of HOPS complex
inferred from mutant phenotype
inferred from direct assay
inferred from physical interaction with UniProtKB:Q5KU39, UniProtKB:Q9VHG1, UniProtKB:Q9Y1I2
located_in lysosome
inferred from direct assay
inferred from mutant phenotype
inferred from direct assay
located_in synapse
inferred from mutant phenotype
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\dor 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 ( 40 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 14 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of dor
Transgenic constructs containing regulatory region of dor
Aberrations (Deficiencies and Duplications) ( 55 )
Inferred from experimentation ( 55 )
Inferred from location ( 32 )
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
thorax & macrochaeta | conditional cs
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (3)
14 of 14
Yes
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) (3)
14 of 14
Yes
Yes
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (3)
13 of 14
Yes
Yes
1 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (1)
11 of 13
Yes
Yes
Danio rerio (Zebrafish) (3)
14 of 14
Yes
Yes
1 of 14
No
No
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) (2)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (1)
13 of 13
Yes
Yes
Saccharomyces cerevisiae (Brewer's yeast) (2)
11 of 13
Yes
Yes
1 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (1)
12 of 12
Yes
Yes
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:dor. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (2)
2 of 13
1 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 3 )
Allele
Disease
Evidence
References
Potential Models Based on Orthology ( 0 )
Human Ortholog
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 4 )
Allele
Disease
Interaction
References
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
Starting gene(s)
Interaction type
Interacting gene(s)
Reference
External Data
Subunit Structure (UniProtKB)
Component of the class C core vacuole/endosome tethering (CORVET) complex composed of at least Vps8, dor/Vps18, car/Vps33A and Vps16A; unlike in other species, Vps11 is not part of the Drosophila complex (PubMed:27253064). Due to the reduced number of components the Drosophila CORVET complex is often referred to as the miniCORVET complex (PubMed:27253064). Interacts with car/Vps33A (PubMed:10549280). Interacts with ema (PubMed:20194640). Component of the homotypic fusion and vacuole protein sorting (HOPS) complex, composed of Vps16A, car/Vps33A, dor/Vps18, Vps39, Vps11 and lt/Vps41 (PubMed:31194677). The tethering complex core made up of Vps16A, car/Vps33A and dor/Vps18 and shared by both HOPS and CORVET, preferentially associates with CORVET-specific Vps8 over HOPS-specific lt/Vps41 (PubMed:31194677). Interacts with Syx17 (via SNARE domain); the interaction may involve multiple components of the HOPS complex and may promote assembly of the Syx17-Snap29-Vamp7 trans-SNARE complex (PubMed:24554766).
(UniProt, Q24314 )
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
1-0.2
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
2B5-2B5
Limits computationally determined from genome sequence between P{EP}brEP1515 and P{EP}EP1444&P{EP}CG14818EP1190
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
Experimentally Determined Recombination Data
Location
Notes

dor has been mapped to the right of su(wa) using a duplication that covers su(wa).

Stocks and Reagents
Stocks (19)
Genomic Clones (10)
 

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

cDNA Clones (45)
 

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

      dsRNA has been made from templates generated with primers directed against this gene.

      dsRNA made from templates generated with primers directed against dor that is transfected into S2 treated with Listeria monocytogenes reveals a vacuolar escape phenotype in which the bacterial protein listeriolysin O is not required.

      dor is required for normal labels of degradation of hh and ptc proteins in the wing disc, but hh signalling is unaffected by this.

      dsRNA made from templates generated with primers directed against this gene tested in RNAi screen for effects on Kc167 and S2R+ cell morphology.

      dor mutations alter trafficking to lysosomes.

      dor is part of a protein complex which includes car.

      Molecular characterisation of dor.

      Localisation of hfw, dor and br are clustered in the X chromosomes of taxonomically distant Drosophila species, suggesting an evolutionary significance of such an organisation.

      dor has been located within a puff on the telomeric chromosome of D.funebris, D.virilis, D.hydei, D.repleta, D.mercatorum and D.paranaensis, within a puff on the distal part of the X chromosome of D.kanekoi and within a puff on the proximal portion of the X chromosome of D.pseudoobscura.pseudoobscura.

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

      The dor locus is subject to T(1;2)dorvar7 position effect variegation.

      Lethal dor allele belongs to the class of ecdysone deficient mutations.

      dor mutants affect a number of developmental processes; severity of effect increases with increasing developmental temperature. Eye color orange, shade depending on allele and temperature. dor reduces eye pigmentation in combination with either cn or v or with bw, indicating reduction in both drosopterins and xanthommatin. Biochemical analyses show xanthommatin and five drosopterins to be reduced to different degrees in dor; levels, but not relative proportions, change according to temperature of development (Counce, 1957) (Puckett and Petty, 1980). Reciprocal transplantation experiments show that eye color is autonomous (Hadorn and Counce). dor females produce no progeny in crosses to dor males at 25oC, although some allelic combinations able to produce progeny at 18oC; and a few dor/+ daughters are produced in crosses to + males. Germ-line clones homozygous for the lethal allele dor28 produce collapsed eggs (Perriman, Egstrom and Mahowald, 1989). The lethal embryos produced by dor mothers reach gastrulation or beyond (Hildreth and Lucchesi, 1967; Counce, 1969). Maternal effect shown to be germ line autonomous by both ovarian (Garen and Gehring, 1972) and pole-cell transplantation (Marsh, van Deusen, Wieschaus and Gehring, 1977). Maternal lethal effect rescuable by injections into preblastoderm embryos of cytoplasm from unfertilized eggs of normal females (Garen and Gehring, 1972); dor+ substance present during early stages of vitellogenesis but not detected in yolk of cellular blastoderm embryos (Marsh et al., 1977). Abnormalities of dor cells in culture eliminated by extracts of normal post- but not pregastrulation embryos (Kuroda, 1977). dor males show variable extents of gonadal dysgenesis depending on culture conditions and genotypic background; abnormalities range from failure of testes to attach to genital ducts to failure of one attached testis to elongate (Lucchesi, Counce and Hildreth, 1968). Viability and longevity of dor homozygotes and hemizygotes variably reduced depending on allele and temperature; dor8 larvae develop melanotic pseudotumors (Stark, 1918; Oftedal, 1953) and midgut occlusion (Russell, 1940), dying in late third instar (Bischoff and Lucchesi, 1971). dor/dor8 lethal at 29oC (Belyaeva, Aizenzon, Semeshin, Kiss, Koczka, Baritcheva, Gorelova, and Zhimulev, 1980). dor in combination with ry, ry2 (Lucchesi, 1968) and car (Nash, 1971) causes lethality in pupal stage. Recovery of gynandromorphs with dor car male sectors less than in controls; bilateral gynandromorphs not observed, but distribution of male tissue resembles that of control (Grell, 1976). dor behaves as a semi-lethal in combination with pd and with cn bw (Lucchesi, 1968).

      Relationship to Other Genes
      Source for database merge of
      Additional comments

      Mutants can be arranged in a linear sequence of increasing strengths; heterozygotes between different pairs of alleles show intermediate phenotypes; no evidence of interallelic complementation (Bischoff and Lucchesi, 1971). Recombinational mapping by Bischoff (1973) established the order illustrated in Lindsley and Zimm (1992) p.164.

      Nomenclature History
      Source for database identify of
      Nomenclature comments
      Etymology
      Synonyms and Secondary IDs (19)
      Reported As
      Symbol Synonym
      dor
      (Nicolson et al., 2024, Tsarouhas et al., 2023, Atienza-Manuel et al., 2021, Gore et al., 2021, Lund et al., 2021, Pizette et al., 2021, Csizmadia and Juhász, 2020, González-Méndez et al., 2020, Graves et al., 2020, Yalonetskaya et al., 2020, Meltzer et al., 2019, Csizmadia et al., 2018, Lund et al., 2018, Salazar and Yamamoto, 2018, Hu et al., 2017.6.13, Shimizu et al., 2017, Transgenic RNAi Project members, 2017-, Lőrincz et al., 2016, Lőrincz et al., 2016, Meehan et al., 2016, Schmid et al., 2016, Aradska et al., 2015, D'Angelo et al., 2015, Liu and Secombe, 2015, Fernandes et al., 2014, Gillingham et al., 2014, Gupta et al., 2014, Issman-Zecharya and Schuldiner, 2014, Mulakkal et al., 2014, Takáts et al., 2014, Zhang et al., 2014, Avanesov and Blair, 2013, Solinger and Spang, 2013, Strutt et al., 2013, Walker et al., 2013, Yacobi-Sharon et al., 2013, Yamamoto et al., 2013-, Gailite et al., 2012, Japanese National Institute of Genetics, 2012.5.21, Wang et al., 2012, Wong et al., 2012, Callejo et al., 2011, Du et al., 2011, Du et al., 2011, Miles et al., 2011, Swetha et al., 2011, Chi et al., 2010, Popodi et al., 2010-, Venken et al., 2010, Akbar et al., 2009, Bass et al., 2009, Massarwa et al., 2009, Soukup et al., 2009, Anaka et al., 2008, Burgess et al., 2008, Strutt and Strutt, 2008, Wilkin et al., 2008, Devergne et al., 2007, Falcon-Perez et al., 2007, Simonsen et al., 2007, Callejo et al., 2006, Ko et al., 2006, Lindmo et al., 2006, Pulipparacharuvil et al., 2005, Sevrioukov et al., 2005, Cherry and Perrimon, 2004, Stanyon et al., 2004)
      l(1)2Be
      l(1)2Bw
      l(1)76
      Secondary FlyBase IDs
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 44 )
        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
        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 (275)