FB2025_05 , released December 11, 2025
Gene: Dmel\Smn
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General Information
Symbol
Dmel\Smn
Species
D. melanogaster
Name
survival motor neuron
Annotation Symbol
CG16725
Feature Type
FlyBase ID
FBgn0036641
Gene Model Status
Stock Availability
Gene Summary
survival motor neuron (Smn) encodes the eponymous member of the SMN complex, which functions as an assembly chaperone for Sm-class small nuclear ribonucleoproteins. The SMN complex contains three other 'Gemin' proteins encoded by Gem2, Gem3 and rig. Smn is essential for viability but higher levels of the protein are required for proper neuromuscular development and function. [Date last reviewed: 2019-03-14] (FlyBase Gene Snapshot)
Also Known As

dSMN, l(3)73Ao, survival of motor neurons

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-44
RefSeq locus
NT_037436 REGION:16580398..16581547
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (38 terms)
Molecular Function (3 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from physical interaction with FLYBASE:Actn; FB:FBgn0000667
inferred from physical interaction with UniProtKB:Q9V3C4
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
enables RNA binding
inferred from electronic annotation with InterPro:IPR010304
Biological Process (24 terms)
Terms Based on Experimental Evidence (23 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
involved_in larval development
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
involved_in P-body assembly
inferred from mutant phenotype
inferred from mutant phenotype
inferred from direct assay
inferred from mutant phenotype
inferred from mutant phenotype
involved_in stem cell division
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
involved_in mRNA processing
inferred from electronic annotation with InterPro:IPR010304
Cellular Component (11 terms)
Terms Based on Experimental Evidence (11 terms)
CV Term
Evidence
References
located_in cytoplasm
inferred from direct assay
located_in I band
inferred from direct assay
inferred from direct assay
located_in nucleus
inferred from direct assay
part_of SMN complex
inferred from direct assay
inferred from genetic interaction with FLYBASE:Gem3; FB:FBgn0011802
inferred from direct assay
located_in Z disc
inferred from direct assay
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
located_in cytoplasm
inferred from electronic annotation with InterPro:IPR010304
located_in nucleus
inferred from electronic annotation with InterPro:IPR010304
Protein Family (UniProt)
Belongs to the SMN family. (Q9VV74)
Summaries
Gene Snapshot
survival motor neuron (Smn) encodes the eponymous member of the SMN complex, which functions as an assembly chaperone for Sm-class small nuclear ribonucleoproteins. The SMN complex contains three other 'Gemin' proteins encoded by Gem2, Gem3 and rig. Smn is essential for viability but higher levels of the protein are required for proper neuromuscular development and function. [Date last reviewed: 2019-03-14]
Gene Group (FlyBase)
SURVIVAL MOTOR NEURON COMPLEX - GEM4A VARIANT -
The survival motor neuron (SMN) complex is minimally composed of SMN and Gemin proteins. The SMN complex mediates the assembly of spliceosomal small nuclear ribonucleoproteins (snRNPs). (Adapted from FBrf0228762).
SURVIVAL MOTOR NEURON COMPLEX - GEM4B VARIANT -
The survival motor neuron (SMN) complex is minimally composed of SMN and Gemin proteins. The SMN complex mediates the assembly of spliceosomal small nuclear ribonucleoproteins (snRNPs). (Adapted from FBrf0228762).
SURVIVAL MOTOR NEURON COMPLEX - GEM4C VARIANT -
The survival motor neuron (SMN) complex is minimally composed of SMN and Gemin proteins. The SMN complex mediates the assembly of spliceosomal small nuclear ribonucleoproteins (snRNPs). (Adapted from FBrf0228762).
Protein Function (UniProtKB)
Core component of the survival motor neuron (SMN) complex that plays an essential role in spliceosomal small nuclear ribonucleoprotein (snRNP) assembly in the cytoplasm, is required for pre-mRNA splicing in the nucleus and acts as a chaperone that discriminates target and non-target RNAs of Sm proteins (PubMed:18923150, PubMed:23063130, PubMed:23063131, PubMed:30563832). A major component of nuclear bodies known as gems (gemini of Cajal bodies) thought to be storage depots of excess SMN complexes (PubMed:21627586). Required for normal expression of spliceosomal snRNAs and for U12 intron splicing. Required in cholinergic neurons, but not in motor neurons, to ensure correct splicing and proper levels of stas mRNA and normal neurotransmitter release by motor neurons (PubMed:23063130, PubMed:23063131). However, Smn is required in motor neurons, but not in cholinergic neurons, for normal motor behavior but plays no role in synaptic transmission according to a report (PubMed:23103409). In both muscle and neurons, required for the formation of a normal neuromuscular junction (NMJ) structure. Plays a neuron-specific role in long-term homeostatic compensation at the larval NMJ. In the thorax of adult flies, required for Act88F, an indirect flight muscle (IFM)-specific actin, expression and for proper IFM myofibril formation. In nurse cells, oocytes and follicle cells, required to maintain normal organization of nuclear compartments including chromosomes, nucleoli, Cajal bodies, histone locus bodies and heterochromatin. Required for the functional integrity of the cytoplasmic U snRNP body (U body) and P body. Required in dividing postembryonic neuroblasts (pNBs) for the correct basal localization of mira. The tight regulation of its expression is critical for stem cell division, proliferation and differentiation in male germline and developing central nervous system (CNS). Required for tracheal terminal cell lumen formation.
(UniProt, Q9VV74)
Summary (Interactive Fly)

RNA binding protein involved, along with Gemins, in the assembly of the small nuclear ribonucleoproteins that constitute the spliceosome - neuromuscular junction protein required in both neurons and muscle for normal junctional morphology

Gene Model and Products
Number of Transcripts
2
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Smn 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 Q9VV74)

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

Gene model reviewed during 5.44

Gene model reviewed during 5.45

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0075395
879
226
FBtr0329921
1086
226
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
FBpp0075153
24.6
226
4.93
FBpp0302954
24.6
226
4.93
Polypeptides with Identical Sequences

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

226 aa isoforms: Smn-PA, Smn-PB
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Subunit Structure (UniProtKB)

Homodimer (via C-terminal region) (PubMed:11113446, PubMed:12783845, PubMed:22813737). Component of the core survival motor neuron (SMN) complex composed of Smn, Gem2, Gem3, rig/Gem5 and one of 3 almost identical Gem4 paralogs encoded by Glos/Gem4a, Gem4b or Gem4c (PubMed:30563832). Interacts with Gem3 (via C-terminus); the interaction is direct and stabilizes Smn (PubMed:18923150, PubMed:19023405). Part of a minimal SMN complex composed of Smn and Gem2 only; this complex is active in UsnRNP assembly (PubMed:18621711, PubMed:23333303). The SMN complex associates with the entire set of spliceosomal snRNP Sm proteins, SmB, SmD1, SmD2, SmD3, SmE, SmF and SmG, and with the snRNP-specific proteins snRNP-U1-70K, U2A, snf/U1A and U5-116KD (PubMed:18621711, PubMed:23333303). Interacts with Glos/Gem4a; the interaction is probably indirect (PubMed:28949413, PubMed:30563832). Interacts with Sbat and Vlet; Sbat and Vlet, along with Hez, may form an accessory subcomplex involved in SMN complex function (PubMed:28949413). Interacts weakly with Gem3 (PubMed:18621711). Interacts with SmB and SmD1; the interaction is favored by methylation of the Sm proteins (PubMed:16753561, PubMed:18369183). Interacts with Actn; the interaction occurs in thoracic tissues and in adult flies (PubMed:17353360). Interacts with Rpp20 (PubMed:14715275). Interacts with msk and Snup; these interactions are RNA-dependent (PubMed:23885126).

(UniProt, Q9VV74)
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\Smn 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).

4.08

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

While Smn is a ubiquitously expressed protein, the levels are modulated in different tissues. Smn is expressed in the ventral ganglion of the developing larval CNS. In early first instar larvae, it is ubiquitous and located in puncate bodies. During late first instar and second instar stages, levels increase in cells that correspond to quiescent postembryonic neuroblasts (pNBs). Smn accumulation increases, with the highest expression found in the cytoplasm of second and third instar dividing pNBs. After division, levels are higher in the neuroblast than in the ganglion mother cell. Levels decrease in a gradient through the daughter cells until reaching a basal level in differentiated neurons and glia. In the larval brain, Smn is enriched in type ID, IA, and all mira-staining neuroblasts of the brain lobes. Smn is expressed in the adult testis where it is localized to the apical tip. Smn is enriched in germline stem cells (GSCs) and levels decrease as cells differentiate, forming a gradient. Staining is undetectable in hub cells, is very high in GSCs, remains high in gonialblasts and spermatogonia, and decreses dramatically in spermatocytes.

Smn is detected by immunolocalization in the wing disc in third instar larvae in a domain overlapping the vg domain. Smn is concentrated in the postsynaptic region of the neuromuscular junction in muscle. It is detected in all tissues examined, including muscle and neurons.

Marker for
 
Subcellular Localization
CV Term
Evidence
References
located_in cytoplasm
inferred from direct assay
located_in I band
inferred from direct assay
inferred from direct assay
located_in nucleus
inferred from direct assay
part_of SMN complex
inferred from direct assay
inferred from genetic interaction with FLYBASE:Gem3; FB:FBgn0011802
inferred from direct assay
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\Smn 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
FlyExpress - Embryonic expression images (BDGP data)
  • Stages(s) 1-3
  • Stages(s) 4-6
  • Stages(s) 7-8
  • Stages(s) 9-10
  • Stages(s) 11-12
  • Stages(s) 13-16
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 9 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 61 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Smn
Transgenic constructs containing regulatory region of Smn
Aberrations (Deficiencies and Duplications) ( 12 )
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) (3)
12 of 14
Yes
Yes
2  
12 of 14
Yes
Yes
3  
1 of 14
No
No
1  
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (2)
12 of 14
Yes
Yes
1 of 14
No
No
Mus musculus (laboratory mouse) (2)
13 of 14
Yes
Yes
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (6)
6 of 13
Yes
Yes
6 of 13
Yes
No
5 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (2)
12 of 14
Yes
Yes
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (1)
8 of 14
Yes
Yes
Anopheles gambiae (African malaria mosquito) (2)
11 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (1)
1 of 13
Yes
No
Saccharomyces cerevisiae (Brewer's yeast) (0)
Schizosaccharomyces pombe (Fission yeast) (2)
1 of 12
Yes
Yes
1 of 12
Yes
No
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Smn. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (2)
3 of 13
2 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 39 )
Allele
Disease
Evidence
References
Potential Models Based on Orthology ( 5 )
Modifiers Based on Experimental Evidence ( 10 )
Allele
Disease
Interaction
References
is exacerbated by ASPPd05779
is ameliorated by Atf6c05057
is exacerbated by btlf02864
is exacerbated by Eip75Bd09801
is exacerbated by Mad12
is ameliorated by ctpf02345
is ameliorated by Moee02369
is exacerbated by SKd03336
is ameliorated by mlte00818
is exacerbated by netf04249
is exacerbated by sprid05295
is exacerbated by witUAS.cMa
is exacerbated by witd02492
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
Subunit Structure (UniProtKB)
Homodimer (via C-terminal region) (PubMed:11113446, PubMed:12783845, PubMed:22813737). Component of the core survival motor neuron (SMN) complex composed of Smn, Gem2, Gem3, rig/Gem5 and one of 3 almost identical Gem4 paralogs encoded by Glos/Gem4a, Gem4b or Gem4c (PubMed:30563832). Interacts with Gem3 (via C-terminus); the interaction is direct and stabilizes Smn (PubMed:18923150, PubMed:19023405). Part of a minimal SMN complex composed of Smn and Gem2 only; this complex is active in UsnRNP assembly (PubMed:18621711, PubMed:23333303). The SMN complex associates with the entire set of spliceosomal snRNP Sm proteins, SmB, SmD1, SmD2, SmD3, SmE, SmF and SmG, and with the snRNP-specific proteins snRNP-U1-70K, U2A, snf/U1A and U5-116KD (PubMed:18621711, PubMed:23333303). Interacts with Glos/Gem4a; the interaction is probably indirect (PubMed:28949413, PubMed:30563832). Interacts with Sbat and Vlet; Sbat and Vlet, along with Hez, may form an accessory subcomplex involved in SMN complex function (PubMed:28949413). Interacts weakly with Gem3 (PubMed:18621711). Interacts with SmB and SmD1; the interaction is favored by methylation of the Sm proteins (PubMed:16753561, PubMed:18369183). Interacts with Actn; the interaction occurs in thoracic tissues and in adult flies (PubMed:17353360). Interacts with Rpp20 (PubMed:14715275). Interacts with msk and Snup; these interactions are RNA-dependent (PubMed:23885126).
(UniProt, Q9VV74 )
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
Class of Gene
Genomic Location and Detailed Mapping Data
Chromosome (arm)
3L
Recombination map
3-44
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
73A9-73A9
Limits computationally determined from genome sequence between P{lacW}l(3)j10E8j10E8&P{PZ}l(3)1053210532 and P{PZ}Baldspot02281
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (14)
Genomic Clones (11)
 

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

cDNA Clones (18)
 

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-unspecified : An inducible stable S2 cell line was created that expresses epitope-tagged Smn. The "TagIt" epitope consists of the first 30 amino acids of human SMN protein.

    Other Comments

    The disruption of motor neurons and muscles seen in Smn mutants is a secondary consequence of a primary dysfunction of sensory-motor network activity: Smn function must be restored in both proprioceptive neurons and cholinergic interneurons to rescue Smn mutant phenotypes.

    Smn mutant animals show progressive loss of mobility and increasingly uncoordinated movement.

    Mutants show defects at the neuromuscular junction.

    Relationship to Other Genes
    Source for database merge of

    Source for merge of: Smn l(3)73Ao

    Additional comments

    Source for identity of Smn CG16725 was sequence comparison ( date:001007 ).

    Nomenclature History
    Source for database identify of

    Source for identity of: Smn CG16725

    Nomenclature comments
    Etymology
    Synonyms and Secondary IDs (13)
    Reported As
    Symbol Synonym
    Secondary FlyBase IDs
    • FBgn0025499
    Datasets (0)
    Study focus (0)
    Experimental Role
    Project
    Project Type
    Title
    Study result (0)
    Result
    Result Type
    Title
    External Crossreferences and Linkouts ( 45 )
    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)
    PDB - An information portal to biological macromolecular structures
    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
    Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
    MIST (genetic) - An integrated Molecular Interaction Database
    MIST (protein-protein) - An integrated Molecular Interaction Database
    References (144)