FB2025_05 , released December 11, 2025
Gene: Dmel\Srrm1
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General Information
Symbol
Dmel\Srrm1
Species
D. melanogaster
Name
Serine-arginine repetitive matrix 1
Annotation Symbol
CG11274
Feature Type
FlyBase ID
FBgn0036340
Gene Model Status
Stock Availability
Gene Summary
SRm160 (SRm160) encodes a conserved RNA-binding protein that participates in the exon junction complex and is involved in pre-mRNA splicing and 3' end formation. It participates in somatic sex determination, cell death, retinal development and the control of circadian rhythm. Direct targets include rl. [Date last reviewed: 2019-03-21] (FlyBase Gene Snapshot)
Also Known As

SRm160

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-39
RefSeq locus
NT_037436 REGION:13036821..13040976
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (14 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
enables RNA binding
inferred from biological aspect of ancestor with PANTHER:PTN000567596
Biological Process (8 terms)
Terms Based on Experimental Evidence (6 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
Cellular Component (5 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
inferred from high throughput direct assay
located_in nucleus
inferred from direct assay
inferred from high throughput direct assay
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN000567596
Protein Family (UniProt)
-
Summaries
Gene Snapshot
SRm160 (SRm160) encodes a conserved RNA-binding protein that participates in the exon junction complex and is involved in pre-mRNA splicing and 3' end formation. It participates in somatic sex determination, cell death, retinal development and the control of circadian rhythm. Direct targets include rl. [Date last reviewed: 2019-03-21]
Gene Group (FlyBase)
NON-CANONICAL SERINE AND ARGININE RICH SPLICING FACTORS -
Non-canonical serine and arginine rich splicing factors are involved in the regulation of splicing. They contain an RS domain but lack the RNA-binding motifs that typify their canonical counterparts. They are recruited to pre-RNA by interacting with proteins bound to exonic sequences rather than directly binding RNA. (Adapted from FBrf0243536.)
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Srrm1 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 Q9VU43)

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.

Gene model reviewed during 5.45

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0075883
3862
954
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
FBpp0075617
107.6
954
12.13
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)
Comments
External Data
Crossreferences
InterPro - A database of protein families, domains and functional sites
Linkouts
Sequences Consistent with the Gene Model
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Srrm1 using the Feature Mapper tool.

External Data
Crossreferences
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).

-0.23

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

Comment: expression assayed in cultured cells

Additional Descriptive Data

Srrm1 transcripts are ubiquitous and at high levels in 0-1 hr embryos and then accumulate around the embryonic periphery at 2-3 hr. At 4-5 pattern they are observed in a segmental pattern. At 7-8 hr, they accumulate in the ventral nerve cord and brain. Later they are primarily restricted to the developing CNS with some expression in the midgut. By 16 hr, Srrm1 is detected exclusively in the condensed CNS.

Srrm1 transcripts are expressed in S2 cells.

Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
western blot
Stage
Tissue/Position (including subcellular localization)
Reference

Comment: expression assayed in cultured cells

Additional Descriptive Data

Srrm1 protein staining is ubiquitous in early embryos and is observed in a puctate pattern in nuclei. Staining remains punctate and nuclear until cellularization. At ~11 hr of development, low levels of protein are seen widely distributed around the embryo with higher concentrations in the midgut, anus, and regions of hemocyte development in the head area. Fairly uniform distribution of Srrm1 protein is observed in imaginal discs, except in the eye disc, where higher levels are observed in differentiating photoreceptor precursors.

Srrm1 protein isdetected in S2 cells.

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

JBrowse - Visual display of RNA-Seq signals

View Dmel\Srrm1 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 ( 6 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 7 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Srrm1
Transgenic constructs containing regulatory region of Srrm1
Aberrations (Deficiencies and Duplications) ( 1 )
Inferred from experimentation ( 1 )
Inferred from location ( 0 )
    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) (1)
    7 of 14
    Yes
    Yes
    Model Organism Orthologs (via DIOPT v9.1)
    Species\Gene Symbol
    Score
    Best Score
    Best Reverse Score
    Alignment
    Complementation?
    Transgene?
    Rattus norvegicus (Norway rat) (1)
    9 of 14
    Yes
    Yes
    Mus musculus (laboratory mouse) (2)
    9 of 14
    Yes
    Yes
    1 of 14
    No
    No
    Xenopus tropicalis (Western clawed frog) (1)
    6 of 13
    Yes
    Yes
    Danio rerio (Zebrafish) (1)
    8 of 14
    Yes
    Yes
    Caenorhabditis elegans (Nematode, roundworm) (2)
    8 of 14
    Yes
    Yes
    1 of 14
    No
    No
    Anopheles gambiae (African malaria mosquito) (1)
    9 of 12
    Yes
    Yes
    Arabidopsis thaliana (thale-cress) (1)
    8 of 13
    Yes
    Yes
    Saccharomyces cerevisiae (Brewer's yeast) (0)
    Schizosaccharomyces pombe (Fission yeast) (1)
    6 of 12
    Yes
    Yes
    Escherichia coli (enterobacterium) (0)
    Other Organism Orthologs (via OrthoDB)
    Data provided directly from OrthoDB:Srrm1. Refer to their site for version information.
    Paralogs
    Paralogs (via DIOPT v9.1)
    Human Disease Associations
    FlyBase Human Disease Model Reports
      Disease Ontology (DO) Annotations
      Models Based on Experimental Evidence ( 0 )
      Allele
      Disease
      Evidence
      References
      Potential Models Based on Orthology ( 0 )
      Human Ortholog
      Disease
      Evidence
      References
      Modifiers Based on Experimental Evidence ( 0 )
      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
      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 (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)
      3L
      Recombination map
      3-39
      Cytogenetic map
      Sequence location
      FlyBase Computed Cytological Location
      Cytogenetic map
      Evidence for location
      69F6-69F6
      Limits computationally determined from genome sequence between P{lacW}RpS12s2783 and P{PZ}l(3)0422004220&P{lacW}l(3)j10B6j10B6
      Experimentally Determined Cytological Location
      Cytogenetic map
      Notes
      References
      Experimentally Determined Recombination Data
      Location
      Left of (cM)
      Right of (cM)
      Notes
      Stocks and Reagents
      Stocks (11)
      Genomic Clones (10)
       

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

      cDNA Clones (79)
       

      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
       

      polyclonal

      Commercially Available Antibodies
       
      Cell Line Information
      Publicly Available Cell Lines
       
        Other Stable Cell Lines
         
          Other Comments
          Relationship to Other Genes
          Source for database merge of
          Additional comments
          Nomenclature History
          Source for database identify of

          Source for identity of: Srrm1 SRm160

          Nomenclature comments
          Etymology

          Renamed from 'SRm160' to 'Srrm1' because (i) the original symbol was based on that of the human ortholog according to its size in kDa, but the size in flies is different; and (ii) the human ortholog has been renamed to SRRM1.

          Synonyms and Secondary IDs (5)
          Datasets (0)
          Study focus (0)
          Experimental Role
          Project
          Project Type
          Title
          Study result (0)
          Result
          Result Type
          Title
          External Crossreferences and Linkouts ( 40 )
          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.
          DRscDB - A single-cell RNA-seq resource for data mining and data comparison across species
          EMBL-EBI Single Cell Expression Atlas - Single cell expression across species
          FlyAtlas2 - A Drosophila melanogaster expression atlas with RNA-Seq, miRNA-Seq and sex-specific data
          FlyMine - An integrated database for Drosophila genomics
          InterPro - A database of protein families, domains and functional sites
          KEGG Genes - Molecular building blocks of life in the genomic space.
          MARRVEL_MODEL - MARRVEL (model organism gene)
          Linkouts
          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
          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
          FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
          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 (61)