FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\gcm
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General Information
Symbol
Dmel\gcm
Species
D. melanogaster
Name
glial cells missing
Annotation Symbol
CG12245
Feature Type
FlyBase ID
FBgn0014179
Gene Model Status
Stock Availability
Gene Summary
glial cells missing (gcm) encodes an essential zinc finger transcription factor that determines the fate of the lateral glial cells. It is involved in the differentiation of plasmatocytes, tendon cells and specific neurons. [Date last reviewed: 2019-03-07] (FlyBase Gene Snapshot)
Also Known As

glide/gcm, glide, glial cell missing, glial cell deficient

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
2-35
RefSeq locus
NT_033779 REGION:9579498..9581745
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (29 terms)
Molecular Function (5 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (4 terms)
CV Term
Evidence
References
Biological Process (23 terms)
Terms Based on Experimental Evidence (19 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
involved_in gliogenesis
inferred from genetic interaction with FLYBASE:gcm2; FB:FBgn0019809
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
Terms Based on Predictions or Assertions (7 terms)
CV Term
Evidence
References
traceable author statement
traceable author statement
involved_in gliogenesis
inferred from biological aspect of ancestor with PANTHER:PTN000275807
non-traceable author statement
traceable author statement
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
located_in nucleus
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in nucleus
inferred from biological aspect of ancestor with PANTHER:PTN000275807
Protein Family (UniProt)
-
Summaries
Gene Snapshot
glial cells missing (gcm) encodes an essential zinc finger transcription factor that determines the fate of the lateral glial cells. It is involved in the differentiation of plasmatocytes, tendon cells and specific neurons. [Date last reviewed: 2019-03-07]
Gene Group (FlyBase)
GLIAL CELL MISSING TRANSCRIPTION FACTORS -
Glia cell missing (GCM) transcription factors are sequence-specific DNA binding proteins that regulate transcription. These proteins are characterized by a 150 amino acid DNA binding region known as GCM domain. GCM transcription factors are involved in the differentiation of neuron precursor cells into glia cells. (Adapted from FBrf0157175).
Protein Function (UniProtKB)
Transcription factor that induces gliogenesis. It determines the choice between glial and neuronal fates. Also has a role in the differentiation of the plasmatocyte/macrophage lineage of hemocytes.
(UniProt, Q27403)
Summary (Interactive Fly)

transcription factor - novel - required for glial cell fate - controlling hemocyte and tendon cell differentiation - controls initiation of collective cell migration by regulating Frazzled

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

Please see the JBrowse view of Dmel\gcm 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 Q27403)

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 5.47

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0079855
1911
504
FBtr0335492
2173
504
Additional Transcript Data and Comments
Reported size (kB)

2.2 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0079451
56.2
504
7.08
FBpp0307464
56.2
504
7.08
Polypeptides with Identical Sequences

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

504 aa isoforms: gcm-PA, gcm-PB
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\gcm 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).

0.30

Transcript Expression
No Assay Recorded
Stage
Tissue/Position (including subcellular localization)
Reference
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
head mesoderm anlage

Comment: anlage in statu nascendi

RT-PCR
Stage
Tissue/Position (including subcellular localization)
Reference
virtual in situ hybridization
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

gcm transcripts are detected in medulla neuropil glial cells as well as in streams of glial cells migrating within the outer proliferation center to reach the medulla neuropil.

In the larval visual system, gcm transcript is expressed not only in specific glial subtypes, but also in the lineage that gives rise to lamina neurons.

gcm expression is observed in the larval optic lobe in some glial subtypes and in a lineage that gives rise to lamina neurons. Expression begins in glial precursor cells at the lamina margins that will give rise to epithelial and marginal glial cells. Expression is also observed in neruonal precursors in the lamina.

expressed first in presumptive glial cell of dbd lineage after decrease in nub expression.

gcm transcripts are first detected by in situ hybridization in the head region of the embryo at the end of the blastoderm stage. At stage 10, expression is still very prominent in the procephalic mesoderm. Additionally staining is seem in one cell per hemisegment in the lateral ectoderm which may correspond to PNS. A second, more medially located cell, may be the longitudinal glioblast. By stage 11, expression decreases in the hemocyte lineage and becomes more prominent in glial cells of the PNS and CNS. The staining pattern appears d fferent in the thoracic and abdominal segments reflecting the different organization of the glial cells. No signal is observed in cells migrating from the procephalic mesoderm after stage 11.

gcm transcripts are expressed in glial precursors and immature glial cells during a short period of gliogenesis. Expression is first detected in early stage 11 in the longitudinal glioblast. By mid stage 11, 2-3 other cells per hemisegment express gcm. Two of these have been identified as NB6-4 and the medial-most cell body glial cell (VUM support cell). By early stage 12, expression is detected in several other cells which are also developing glial cells. Expression fades during stage 12 and is hardly detectable in stage 13. Enhancer trap expression was used to trace the gcm-expressing cells to later developmental stages. It was found that gcm is expressed in all glial precursors and immature glial cells except those derived from the mesectoderm. Outside of the CNS, gcm is expressed in the most anterior region of the presumptive mesoderm beginning at the cellular blastoderm stage, in the brain neurogenic region, and in the PNS neurogenic region.

gcm transcripts are initially expressed in an anterior ventral patch in the cellular blastoderm embryo. During gastrulation, these cells invaginate at the end of the ventral furrow just anterior to the cephalic furrow in an area that gives rise to the cephalic mesoderm. Cephalic expression fades after stage 10. During stages 11-12, in each hemisegment, two patches of 3-5 ectodermal cells sequentially and transiently express gcm. From each patch, a single large blast cell delaminates and maintains gcm expression. These are tentatively identified as the peripheral glioblast and the longitudinal glioblast. By late stage 11, all of the progeny of these glioblasts as well as additional glial cells express gcm. Glial expression is gone by stage 15. In the brain lobes, gcm is expressed in a complex pattern through stage 17. In the PNS, gcm is transiently expressed in all repo-positive glia along peripheral axon pathways and associated with sensory organs.

Marker for
Subcellular Localization
CV Term
Polypeptide Expression
immunolocalization
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data

gcm is first detected in stage 10 embryos in one lateral cell thought to be a longitudinal glial cell. In stage 11 and 13 embryos, it is expressed in a number of CNS precursor cells including glial cells. By stage 15 staining has tailed off and is observed in scattered puncta.

In the larval visual system, gcm protein is expressed not only in specific glial subtypes, but also in the lineage that gives rise to lamina neurons.

gcm protein is detected in nuclei in a subset of cells in the glial precursor cell areas at the margin of the lamina and in lamina precursor cells.

gcm protein is initially expressed in an anterior ventral patch in the cellular blastoderm embryo. During gastrulation, these cells invaginate at the end of the ventral furrow just anterior to the cephalic furrow in an area that gives rise to the cephalic mesoderm. Cephalic expression fades after stage 10. During stages 11-12, in each hemisegment, two patches of 3-5 ectodermal cells sequentially and transiently express gcm. From each patch, a single large blast cell delaminates and maintains gcm expression. These are tentatively identified as the peripheral glioblast and the longitudinal glioblast. By late stage 11, all of the progeny of these glioblasts as well as additional glial cells express gcm and expression is gone by stage 15. In the brain lobes, gcm is expressed in a complex pattern through stage 17. In the PNS, gcm is transiently expressed in all repo-positive glia along peripheral axon pathways and associated with sensory organs.

Marker for
Subcellular Localization
CV Term
Evidence
References
located_in nucleus
inferred from direct assay
Expression Deduced from Reporters
Reporter: M{gcm-FLAG.BAC}
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{GawB}gcmrA87.C
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{GawB}gcmrA87.P
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{gcm-GAL4.6}
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{PZ}gcmP
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{PZ}gcmrA87
Stage
Tissue/Position (including subcellular localization)
Reference
Reporter: P{sgcm-GAL4}
Stage
Tissue/Position (including subcellular localization)
Reference
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\gcm 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
Flygut - An atlas of the Drosophila adult midgut
Images
FlyExpress - Embryonic expression images (BDGP data)
  • 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 ( 36 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 37 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of gcm
Transgenic constructs containing regulatory region of gcm
Aberrations (Deficiencies and Duplications) ( 26 )
Inferred from experimentation ( 26 )
Inferred from location ( 10 )
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
medulla cortex & glial cell | somatic clone, with Scer\GAL4Act5C.PI
mesothoracic tergum & macrochaeta | supernumerary (with gcmN7-4)
mesothoracic tergum & macrochaeta | supernumerary (with gcmPyx)
mesothoracic tergum & macrochaeta | supernumerary | conditional ts
mesothoracic tergum & macrochaeta | supernumerary | conditional ts, with Scer\GAL4hs.PB
metathoracic laterotergite & macrochaeta | supernumerary
scutellum & macrochaeta | supernumerary
scutum & macrochaeta | supernumerary
sense organ & wing
wing & neuron | supernumerary | somatic clone
wing & sensillum campaniformium | supernumerary | somatic clone, with Scer\GAL4Act5C.PI
wing & thecogen cell | somatic clone
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (2)
9 of 14
Yes
Yes
3  
7 of 14
No
Yes
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)
10 of 14
Yes
Yes
7 of 14
No
Yes
1  
Mus musculus (laboratory mouse) (2)
10 of 14
Yes
Yes
2  
7 of 14
No
Yes
Xenopus tropicalis (Western clawed frog) (2)
6 of 13
Yes
Yes
5 of 13
No
Yes
Danio rerio (Zebrafish) (1)
9 of 14
Yes
Yes
Caenorhabditis elegans (Nematode, roundworm) (0)
Anopheles gambiae (African malaria mosquito) (2)
Arabidopsis thaliana (thale-cress) (0)
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:gcm. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (1)
7 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 4 )
Potential Models Based on Orthology ( 0 )
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
Interaction Browsers

Please see the Physical Interaction reports below for full details
RNA-RNA
Physical Interaction
Assay
References
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 (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)
2L
Recombination map
2-35
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
30B12-30B12
Limits computationally determined from genome sequence between P{EP}Oatp30BEP890 and P{EP}EP361&P{EP}peloEP2160
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
30B9-30B12
30B-30C
(determined by in situ hybridisation)
30C-30C
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (38)
Genomic Clones (16)
 

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

cDNA Clones (9)
 

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)
    BDGP DGC clones
      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

          hkb triggers gcm autoregulation via direct physical interaction.

          gcm and gcm2 cooperate with the hh pathway to regualte neurogenesis in the lamina.

          Lack of both gcm and gcm2 eliminates all lateral glial cells.

          N signalling positively regulates gcm expression in the context of subperineurial glial cell development.

          gcm is required for the formation of subperineurial glial cells.

          The decision to express gcm in the sensory organ lineage is dependent upon cell-cell communication.

          mira and pros seem to be upstream of gcm in the cascade of cell fate decision in the NB6-4T lineage.

          Restricted expression of gcm is required for the developmental program of embryonic plasmatocytes.

          gcm is necessary to induce glial differentiation in the peripheral nervous system.

          Gliogenesis depends on gcm through asymmetric division of neuroglioblasts.

          gcm can induce gliogenesis in mesodermal cells, indicating that gliogenesis does not require a ground neural state.

          gcm is required in the hemocyte/macrophage cell lineage.

          On the basis of structural as well as functional criteria gcm is a transcription factor with novel DNA binding domain that recognises the motif AT(G/A)CGGGT.

          gcm encodes a novel DNA binding protein, which has its DNA binding activity localised within the N-terminal 181 amino acids. The protein binds with high specificity to the sequence, (A/G)CCCGCAT. Eleven such gcm binding sequences are found in the upstream region of the repo gene.

          gcm is necessary for glial cell fate commitment. Mutations prevent glial cell determination in the embryonic central and peripheral nervous system. Absence of glial cells is the consequence of a cell fate switch from glia to neurones.

          Mutations at gcm have severely disrupted longitudinal connectives. gcm was identified during an enhancer detector screen, imprecise excisions of the P-element generated severe alleles in which the longitudunal connectives have few axons in most segments. Expression patterns of mutant alleles indicate that the gcm mutation disrupts early steps of glial development. gcm may be an upstream element in the cascade that controls the repo expression.

          Phenotypic analysis reveals that glial/neuron determination is governed by a single molecule, gcm. All CNS cells are originally bipotential so that they can differentiate into both neurons and glial cells with neuronal differentiation as a default. They differentiate into neurons when gcm is absent while they differentiate into glial cells when gcm is present.

          Cloning, molecularly characterisation and genetic analysis of gcm.

          gcm is involved in the migratory, not rotatory, aspect of lateral chordotonal (Lch) neuron development.

          Relationship to Other Genes
          Source for database merge of
          Additional comments
          Nomenclature History
          Source for database identify of
          Nomenclature comments
          Etymology
          Synonyms and Secondary IDs (18)
          Reported As
          Symbol Synonym
          gcm
          (Long et al., 2025, Yun et al., 2025, Chen et al., 2024, Huang et al., 2024, Markey et al., 2023, Sun et al., 2023, Charlton-Perkins et al., 2021, Koranteng et al., 2020, Magadi et al., 2020, Neuert et al., 2020, Port et al., 2020, Banerjee et al., 2019, Melcarne et al., 2019, Shokri et al., 2019, Bazzi et al., 2018, Bischof et al., 2018, Losada-Perez, 2018, Ogiyama et al., 2018, Shen et al., 2018, Shlyakhover et al., 2018, Charlton-Perkins et al., 2017, Karaiskos et al., 2017, Transgenic RNAi Project members, 2017-, Altenhein et al., 2016, Cattenoz et al., 2016, Cattenoz et al., 2016, Gupta et al., 2016, Suzuki et al., 2016, Cattenoz and Giangrande, 2015, Ghosh et al., 2015, Kim et al., 2015, Schertel et al., 2015, Sun et al., 2015, Flici et al., 2014, Jones, 2014, Shklyar et al., 2014, Cattenoz and Giangrande, 2013, Freeman and Rowitch, 2013, Laneve et al., 2013, Wang et al., 2013, Carney et al., 2012, Garcia et al., 2012, Johnson et al., 2012, Popkova et al., 2012, Sorge et al., 2012, Spokony and White, 2012.5.22, Stork et al., 2012, Ding et al., 2011, Flici et al., 2011, Hadjieconomou et al., 2011, Hartenstein, 2011, Hartl et al., 2011, Hidalgo et al., 2011, Kucherenko et al., 2011, Marcu et al., 2011, Viktorin et al., 2011, Berger et al., 2010, Frise et al., 2010, Kazemian et al., 2010, Wright et al., 2010, Ho et al., 2009, Jacques et al., 2009, Southall and Brand, 2009, Awasaki et al., 2008, Beckervordersandforth et al., 2008, Ho et al., 2008, Kucherenko et al., 2008, Kwong et al., 2008, Mandalaywala et al., 2008, Miller et al., 2008, Soustelle et al., 2008, Stork et al., 2008, Colonques et al., 2007, Hülsmeier et al., 2007, Jones and Lamberton, 2007, Kim et al., 2007, Mondal et al., 2007, Pereanu et al., 2007, Pereanu et al., 2007, Ratnaparkhi and Zinn, 2007, Soustelle and Giangrande, 2007, Altenhein et al., 2006, Banerjee et al., 2006, Choksi et al., 2006, Kang et al., 2006, Liebl et al., 2006, Parker et al., 2006, Serpe and O'Connor, 2006, Younossi-Hartenstein et al., 2006, Chotard et al., 2005, Freeman, 2005, Schwabe et al., 2005, Paladi and Tepass, 2004, Iwasaki et al., 2003, Urbach and Technau, 2003)
          l(2)N7-4
          ucc
          Secondary FlyBase IDs
          • FBgn0014259
          Datasets (0)
          Study focus (0)
          Experimental Role
          Project
          Project Type
          Title
          Study result (0)
          Result
          Result Type
          Title
          External Crossreferences and Linkouts ( 43 )
          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
          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
          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
          Flygut - An atlas of the Drosophila adult midgut
          iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
          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 (330)