FB2026_02 , released June 18, 2026
FB2026_02 , released June 18, 2026
Gene: Dmel\Ubi-p63E
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General Information
Symbol
Dmel\Ubi-p63E
Species
D. melanogaster
Name
Ubiquitin-63E
Annotation Symbol
CG11624
Feature Type
FlyBase ID
FBgn0003943
Gene Model Status
Stock Availability
Gene Summary
Ubiquitin-63E (Ubi-p63E) encodes a polyubiquitin precursor: once processed by deubiquitinating enzymes, it produces ten ubiquitin molecules, which are predominantly conjugated to target proteins. Ubiquitin conjugation is involved in a wide range of biological processes, such as protein degradation, endocytosis of plasma membrane proteins, protein trafficking, DNA-damage response and inflammation and immune system response. [Date last reviewed: 2018-09-06] (FlyBase Gene Snapshot)
Also Known As

Ub, ubiquitin, Ubi-p, polyubiquitin, ubi63E

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-9
RefSeq locus
NT_037436 REGION:3899259..3903184
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (7 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 biological aspect of ancestor with PANTHER:PTN000071508
inferred from sequence or structural similarity with SGD:S000003962
Biological Process (4 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from mutant phenotype
involved_in macroautophagy
inferred from mutant phenotype
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000071508
inferred from sequence or structural similarity with SGD:S000003962
Cellular Component (2 terms)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
is_active_in cytosolic ribosome
inferred from biological aspect of ancestor with PANTHER:PTN000071508
is_active_in nucleus
inferred from biological aspect of ancestor with PANTHER:PTN000071508
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the ubiquitin family. (P0CG69)
Summaries
Gene Snapshot
Ubiquitin-63E (Ubi-p63E) encodes a polyubiquitin precursor: once processed by deubiquitinating enzymes, it produces ten ubiquitin molecules, which are predominantly conjugated to target proteins. Ubiquitin conjugation is involved in a wide range of biological processes, such as protein degradation, endocytosis of plasma membrane proteins, protein trafficking, DNA-damage response and inflammation and immune system response. [Date last reviewed: 2018-09-06]
Gene Group (FlyBase)
UBIQUITIN -
Ubiquitin is a small (76 amino acid), highly conserved protein found in all eukaryotes. Through its covalent attachment to other proteins, ubiquitin can modify protein activity in numerous ways. The most well known is the targeting of proteins for proteasomal degradation. Ubiquitin is often expressed as a fusion protein, either as polyubiquitin or fused with the ribosomal proteins L40 and S27a. Ubiquitin monomers are generated by post-translational cleavage. (Adapted from PMID:12729753 and PMID:27012465)
Protein Function (UniProtKB)
Ubiquitin exists either covalently attached to another protein, or free (unanchored). When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains). Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-48-linked is involved in protein degradation via the proteasome. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling (By similarity).
(UniProt, P0CG69)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
Ubi-p: Ubiquitin-polymeric
Structural gene for ubiquitin (Arribas et al., 1988); structure and expression described by Lee et al. (1988). Threefold increase in level of gene by heat shock. An Ubi-p - lacZ fusion gene introduced by germ line transformation has been expressed at high levels at all life stages tested (embryonic, larval, pupal, and adult).
Gene Model and Products
Number of Transcripts
4
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Ubi-p63E 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 P0CG69)

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.

Apparent introns not annotated: probable artifacts due to repetitive sequence.

Gene model reviewed during 5.46

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0073177
2521
763
FBtr0073178
2759
763
FBtr0073179
2710
763
FBtr0333142
2624
763
Additional Transcript Data and Comments
Reported size (kB)

4.4 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
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
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\Ubi-p63E 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).

4.93

Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
northern blot
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

Ubi-p63E transcript is expressed in spermatocytes. Expression is isoform-specific; very little Ubi-p63E-RC transcript is detected in spermatocytes, while Ubi-p63E-RA has higher expression levels than other isoforms.

Ubi-p63E transcripts are observed in all stages assayed. A reporter construct was used to show that they are expressed in a tissue-general pattern in all life stages assayed.

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\Ubi-p63E 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
Flygut - An atlas of the Drosophila adult midgut
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 11 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 3 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Ubi-p63E
Transgenic constructs containing regulatory region of Ubi-p63E
Aberrations (Deficiencies and Duplications) ( 4 )
Inferred from experimentation ( 4 )
Gene partially disrupted in
Inferred from location ( 3 )
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
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (19)
11 of 14
Yes
Yes
5  
6 of 14
No
Yes
4  
4 of 14
No
No
3 of 14
No
No
3 of 14
No
No
1  
2 of 14
No
No
2 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
No
1  
1 of 14
No
No
1 of 14
No
No
1  
1 of 14
No
No
5  
1 of 14
No
No
8  
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
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) (31)
11 of 14
Yes
Yes
6 of 14
No
Yes
3 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
Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 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
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
1 of 14
No
No
Mus musculus (laboratory mouse) (31)
12 of 14
Yes
Yes
6 of 14
No
No
3 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
Yes
1 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
1 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
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) (11)
7 of 13
Yes
Yes
4 of 13
No
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
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (15)
10 of 14
Yes
Yes
8 of 14
No
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
1 of 14
No
No
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (17)
10 of 14
Yes
Yes
3 of 14
No
Yes
3 of 14
No
No
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
No
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
1 of 14
No
Yes
1 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
Anopheles gambiae (African malaria mosquito) (11)
10 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (47)
10 of 13
Yes
Yes
10 of 13
Yes
Yes
8 of 13
No
Yes
7 of 13
No
Yes
6 of 13
No
Yes
6 of 13
No
Yes
5 of 13
No
Yes
5 of 13
No
Yes
5 of 13
No
Yes
4 of 13
No
No
4 of 13
No
No
4 of 13
No
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
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
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
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) (8)
9 of 13
Yes
Yes
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (9)
9 of 12
Yes
Yes
3 of 12
No
No
3 of 12
No
No
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:Ubi-p63E. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (11)
11 of 13
6 of 13
6 of 13
5 of 13
5 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 ( 1 )
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.
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
Linkouts
BioGRID - A database of protein and genetic interactions.
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
Reactome Metabolic Pathways - An open-source, open access, manually curated and peer-reviewed metabolic pathway database.
External Data
Linkouts
KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
Class of Gene
Genomic Location and Detailed Mapping Data
Chromosome (arm)
3L
Recombination map
3-9
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
63F5-63F5
Limits computationally determined from genome sequence between P{PZ}kst01318 and P{PZ}Sc205634
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
63F2-63F4
(determined by in situ hybridisation)
63E-63E
(determined by in situ hybridisation)
63F-63F
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes

Same map position as 63F early ecdysone-induced puff.

Stocks and Reagents
Stocks (5)
Genomic Clones (15)
 

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

cDNA Clones (49)
 

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
       
      • New stable cell line derived from S2-DGRC : Stable S2-DGRC cell lines expressing Tag:FLAG-tagged wild-type and mutant versions of IntS8 under the control of the Ubi-p63E promoter were generated.

      • New stable cell line derived from OSC : Stable OSC lines expressing internally tagged kipf under control of the Ubi-p63E promoter and an SV40 3'UTR were generated by integration into an RMCE landing site.

      Other Comments

      S2 cells treated with dsRNA generated against this gene show reduced phagocytosis of Candida albicans compared to untreated cells.

      RNAi generated by PCR using primers directed to this gene causes a cell growth and viability phenotype when assayed in Kc167 and S2R+ cells.

      RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a cell growth and viability phenotype when assayed in Kc167 and S2R+ cells.

      Area matching Drosophila Ubiquitin gene, Acc. No. M22428.

      Antibody staining of polytene chromosomes shows that ubiquitin is mainly associated with the compact and stabilized structure that forms the bands rather than with the more decondensed and destabilized protein-DNA structure that forms interbands and puffs.

      Ubi-p63E expression has been studied in heat shocked aging flies.

      Structural gene for ubiquitin (Arribas, Sampedro and Izquierdo, 1988); structure and expression described by Lee, Simon and Lis (1988). Threefold increase in level of gene by heat shock. A Ubi-p63E-lacZ fusion gene introduced by germ line transformation has been expressed at high levels at all life stages tested (embryonic, larval, pupal and adult).

      Relationship to Other Genes
      Source for database merge of
      Additional comments

      The Ubi-p5E and Ubi-p63E genes share at least 50% identity.

      The insertion in the "l(3)05634" line is within the Sc2 gene, rather than affecting Ubi-p63E as stated in FBrf0111489.

      The insertion in the "l(3)05634" line is stated to affect Ubi-p63E in this paper. A subsequent publication suggests that this is incorrect and the insertion is in fact in Sc2 (see FBrf0130136).

      Nomenclature History
      Source for database identify of
      Nomenclature comments
      Etymology

      Named 'magellan' because mutant spermatocytes arrest development with abnormal structures that resemble Magellanic clouds.

      Synonyms and Secondary IDs (28)
      Reported As
      Symbol Synonym
      DmUbi-p63E
      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 ( 218 )
        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
        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.
        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 (protein-protein) - An integrated Molecular Interaction Database
        Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
        Reactome Metabolic Pathways - An open-source, open access, manually curated and peer-reviewed metabolic pathway database.
        References (374)