FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\tn
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General Information
Symbol
Dmel\tn
Species
D. melanogaster
Name
thin
Annotation Symbol
CG15105
Feature Type
FlyBase ID
FBgn0265356
Gene Model Status
Stock Availability
Enzyme Name (EC)
Gene Summary
thin (tn) encodes a TRIM/RBCC protein involved in myofibril assembly and stability. [Date last reviewed: 2019-07-11] (FlyBase Gene Snapshot)
Also Known As

abba, l(2)tn, TRIM32

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
2-87
RefSeq locus
NT_033778 REGION:18987344..19008944
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (15 terms)
Molecular Function (4 terms)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (4 terms)
CV Term
Evidence
References
inferred from electronic annotation with InterPro:IPR018957
inferred from biological aspect of ancestor with PANTHER:PTN001188366
inferred from sequence or structural similarity with UniProtKB:Q13049
inferred from sequence model
Biological Process (10 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
involved_in myofibril assembly
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN001188366
inferred from sequence or structural similarity with UniProtKB:Q13049
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
located_in Z disc
inferred from direct assay
Terms Based on Predictions or Assertions (0 terms)
Gene Group (FlyBase)
Protein Family (UniProt)
-
Catalytic Activity (EC/Rhea)
ubiquitin protein ligase activity
Summaries
Gene Snapshot
thin (tn) encodes a TRIM/RBCC protein involved in myofibril assembly and stability. [Date last reviewed: 2019-07-11]
Gene Group (FlyBase)
TRIM UBIQUITIN LIGASES -
E3 (ubiquitin) ligases interact with both ubiquitin-E2 (ubiquitin-conjugating) enzymes and the target protein, transferring the ubiquitin from the E2 to the substrate. The TRIM family are E3 ligases characterized a TRIpartite Motif, which consists of a RING domain, one or two B-box motifs and a coiled-coil region. As well as ubiquitination, TRIM proteins are also involved in ubiquitin-like modifications such as SUMOylation and ISGylation. (Adapted from PMID:18673550).
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
tn: thin
Fully penetrant recessive lethal (no homozygous adults recovered). Hatching occurs late and second/third instar moult is delayed. Third instar larvae are long, thin, and rather slow-moving; histological examination shows abnormal muscle structure. Puparium also long and thin. Pupal development of homozygotes incomplete. Since mutants are unable to perform movements necessary for pupation, they die prior to eclosion.
Summary (Interactive Fly)

E3 ligase activity - myofibril assembly and stability, maintenance of glycolytic flux mediated by biochemical interactions with the glycolytic enzymes - a Drosophila model for Limb Girdle Muscular Dystrophy type 2H required for cell death in the Drosophila abdominal muscles by targeting DIAP1

Gene Model and Products
Number of Transcripts
6
Number of Unique Polypeptides
5

Please see the JBrowse view of Dmel\tn 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 B7YZK8)

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
PDB - An information portal to biological macromolecular structures
Comments on Gene Model

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

Gene model reviewed during 5.50

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0086573
4536
1353
FBtr0086572
4678
1353
FBtr0114622
5170
1517
FBtr0340447
4668
1248
FBtr0340448
4308
1277
FBtr0340449
3182
827
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
FBpp0085757
145.6
1353
7.34
FBpp0085756
145.6
1353
7.34
FBpp0113114
164.3
1517
4.69
FBpp0309389
134.2
1248
7.33
FBpp0309390
137.2
1277
7.23
Polypeptides with Identical Sequences

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

1353 aa isoforms: tn-PA, tn-PB
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Crossreferences
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\tn 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).

-0.61

Transcript Expression
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

tn protein expression at larval body wall muscle Z discs coincides with, but is broader than, that of Mlp84B and sls. tn expression partially colocalizes with F-actin, but does not overlaps with myosin tn is not localized to muscle attachment sites. tn protein is localized to Z discs and M bands in the myofibrils of adult somatic muscles.

Marker for
 
Subcellular Localization
CV Term
Evidence
References
located_in Z disc
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\tn 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
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 11 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 19 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of tn
Transgenic constructs containing regulatory region of tn
Aberrations (Deficiencies and Duplications) ( 3 )
Inferred from experimentation ( 3 )
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) (61)
6 of 14
Yes
Yes
6 of 14
Yes
Yes
5 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
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No
2 of 14
No
No
1 of 14
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1 of 14
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1 of 14
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1  
1 of 14
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No
1  
1 of 14
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Yes
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Yes
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Yes
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Yes
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Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (26)
6 of 14
Yes
Yes
6 of 14
Yes
Yes
5 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
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
Yes
1 of 14
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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
Yes
1 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
Mus musculus (laboratory mouse) (35)
6 of 14
Yes
Yes
6 of 14
Yes
Yes
5 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
No
1 of 14
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No
1 of 14
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Yes
1 of 14
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No
1 of 14
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Yes
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Yes
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Yes
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
Xenopus tropicalis (Western clawed frog) (42)
6 of 13
Yes
Yes
6 of 13
Yes
Yes
2 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
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Yes
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) (41)
6 of 14
Yes
Yes
6 of 14
Yes
Yes
6 of 14
Yes
Yes
6 of 14
Yes
Yes
5 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 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
No
1 of 14
No
Yes
1 of 14
No
Yes
1 of 14
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Yes
1 of 14
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No
1 of 14
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Yes
1 of 14
No
Yes
1 of 14
No
No
1 of 14
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No
1 of 14
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No
1 of 14
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No
1 of 14
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Yes
1 of 14
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Yes
1 of 14
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Yes
1 of 14
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Yes
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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
Yes
1 of 14
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (43)
13 of 14
Yes
Yes
3 of 14
No
No
2 of 14
No
Yes
2 of 14
No
Yes
2 of 14
No
No
2 of 14
No
Yes
2 of 14
No
No
2 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
No
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
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
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
Anopheles gambiae (African malaria mosquito) (12)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (20)
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
Yes
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
Yes
1 of 13
Yes
Yes
1 of 13
Yes
No
1 of 13
Yes
Yes
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
No
1 of 13
Yes
Yes
1 of 13
Yes
Yes
1 of 13
Yes
No
Saccharomyces cerevisiae (Brewer's yeast) (0)
Schizosaccharomyces pombe (Fission yeast) (0)
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:tn. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (12)
6 of 13
4 of 13
3 of 13
2 of 13
1 of 13
1 of 13
1 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 ( 9 )
Potential Models Based on Orthology ( 1 )
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.
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
Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
Class of Gene
Genomic Location and Detailed Mapping Data
Chromosome (arm)
2R
Recombination map
2-87
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
56A2-56A3
Limits computationally determined from genome sequence between P{lacW}prodk08810 and P{PZ}ena02029&P{lacW}corak08713
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
Experimentally Determined Recombination Data
Location

2-85.6

Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (108)
Genomic Clones (38)
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
    Antibody Information
    Laboratory Generated Antibodies
    Commercially Available Antibodies
     
    Cell Line Information
    Publicly Available Cell Lines
     
      Other Stable Cell Lines
       
        Other Comments

        tn function is not needed during embryogenesis for the initial formation of the larval musculature, but it is required for proper muscle growth and function during subsequent larval and pupal stages.

        tn, Actn, sls and Mlp84B act in concert to maintain the integrity and stability of Z-discs, thereby ensuring myofibril stability and optimal muscle function.

        Relationship to Other Genes
        Source for database merge of

        Source for merge of: tn abba

        Additional comments

        snoRNA:abba-a is encoded in an intron of abba.

        Nomenclature History
        Source for database identify of

        Source for identity of: abba CG15105

        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (13)
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 59 )
        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
        KEGG Genes - Molecular building blocks of life in the genomic space.
        MARRVEL_MODEL - MARRVEL (model organism gene)
        PDB - An information portal to biological macromolecular structures
        Linkouts
        Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
        DroID - A comprehensive database of gene and protein interactions.
        Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
        FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
        FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
        Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
        iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
        Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
        MIST (protein-protein) - An integrated Molecular Interaction Database
        Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
        References (83)