FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\eas
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General Information
Symbol
Dmel\eas
Species
D. melanogaster
Name
easily shocked
Annotation Symbol
CG3525
Feature Type
FlyBase ID
FBgn0000536
Gene Model Status
Stock Availability
Enzyme Name (EC)
choline kinase (2.7.1.32)
ethanolamine kinase (2.7.1.82)
Gene Summary
Highly specific for ethanolamine phosphorylation. May be a rate-controlling step in phosphatidylethanolamine biosynthesis. (UniProt, P54352)
Contribute a Gene Snapshot for this gene.
Also Known As

ala, Ethanolamine kinase

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
1-53
RefSeq locus
NC_004354 REGION:16278328..16285618
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 (2 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from 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:PTN000503516
Biological Process (11 terms)
Terms Based on Experimental Evidence (7 terms)
CV Term
Evidence
References
inferred from mutant phenotype
involved_in brain development
inferred from mutant phenotype
inferred from mutant phenotype
inferred from mutant phenotype
inferred from direct assay
inferred from genetic interaction with FLYBASE:kcc; FB:FBgn0261794
inferred from mutant phenotype
Terms Based on Predictions or Assertions (5 terms)
CV Term
Evidence
References
traceable author statement
involved_in habituation
traceable author statement
involved_in long-term memory
traceable author statement
traceable author statement
Cellular Component (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in cytoplasm
inferred from biological aspect of ancestor with PANTHER:PTN000503516
located_in cytoplasm
inferred from sequence or structural similarity with SGD:S000004123
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the choline/ethanolamine kinase family. (P54352)
Catalytic Activity (EC/Rhea)
ethanolamine kinase activity
ethanolamine + ATP = phosphoethanolamine + ADP + H(+) (2.7.1.82)
RHEA 13069: choline kinase activity
choline + ATP = phosphocholine + ADP + H(+) (2.7.1.32)
RHEA 12837:
Summaries
Gene Group (FlyBase)
UNCLASSIFIED KINASES -
This group comprises kinases that do not classify under other groups in FlyBase.
Protein Function (UniProtKB)
Highly specific for ethanolamine phosphorylation. May be a rate-controlling step in phosphatidylethanolamine biosynthesis.
(UniProt, P54352)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
eas: easily shocked (J.C. Hall)
Brief paralysis following exposure to mechanical shock; this phenotype suppressed by napts mutation at its permissive temperature; release of neurotransmitter at larval neuromuscular junction is apparently normal.
Summary (Interactive Fly)

ethanolamine kinase - catalyzes the first step of the synthesis of phosphatidylethanolamine, one of the three major membrane phospholipids - a behavioral mutant that belongs to a family of bang-sensitive paralytic mutants - required in mushroom body neuroblasts to allow a rapid rate of cell division at metamorphosis

Gene Model and Products
Number of Transcripts
8
Number of Unique Polypeptides
3

Please see the JBrowse view of Dmel\eas 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 P54352)

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 5.39

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

Gene model reviewed during 5.52

Multiphase exon postulated: exon reading frame differs in alternative transcripts; overlap >20aa.

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0074212
2195
495
FBtr0074211
2263
495
FBtr0074214
2395
495
FBtr0308617
4627
171
FBtr0308618
2442
150
FBtr0308619
2401
495
FBtr0343519
2331
495
FBtr0343520
4575
171
Additional Transcript Data and Comments
Reported size (kB)

7, 5, 2.4 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0073991
56.8
495
5.02
FBpp0073990
56.8
495
5.02
FBpp0073993
56.8
495
5.02
FBpp0300841
19.2
171
8.93
FBpp0300842
17.2
150
9.97
FBpp0300843
56.8
495
5.02
FBpp0310123
56.8
495
5.02
FBpp0310124
19.2
171
8.93
Polypeptides with Identical Sequences

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

495 aa isoforms: eas-PA, eas-PB, eas-PC, eas-PH, eas-PI
171 aa isoforms: eas-PF, eas-PJ
Additional Polypeptide Data and Comments
Reported size (kDa)

517, 495 (aa)

Comments

Activity assays show that eas protein is specific for ethanolamine and does not use choline as a substrate.

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\eas 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).

-0.92

Transcript Expression
Additional Descriptive Data
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\eas 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 ( 27 )
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 eas
Transgenic constructs containing regulatory region of eas
Aberrations (Deficiencies and Duplications) ( 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
mushroom body & neuron | somatic clone
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (4)
14 of 14
Yes
Yes
13 of 14
No
Yes
1  
3 of 14
No
No
3 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) (4)
14 of 14
Yes
Yes
13 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
Mus musculus (laboratory mouse) (4)
14 of 14
Yes
Yes
12 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
Xenopus tropicalis (Western clawed frog) (4)
5 of 13
Yes
Yes
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (5)
14 of 14
Yes
Yes
13 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
1 of 14
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (7)
13 of 14
Yes
Yes
3 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
Anopheles gambiae (African malaria mosquito) (2)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (4)
12 of 13
Yes
Yes
6 of 13
No
No
6 of 13
No
No
6 of 13
No
No
Saccharomyces cerevisiae (Brewer's yeast) (2)
6 of 13
Yes
No
6 of 13
Yes
No
Schizosaccharomyces pombe (Fission yeast) (1)
5 of 12
Yes
No
Escherichia coli (enterobacterium) (1)
1 of 11
Yes
Yes
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:eas. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (1)
6 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 6 )
Potential Models Based on Orthology ( 0 )
Human Ortholog
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 1 )
Allele
Disease
Interaction
References
model of  epilepsy
is ameliorated by shi1
is ameliorated by Top1112
is ameliorated by Top1JS
is ameliorated by Mmp1f1.UAS
is ameliorated by wtrwex
is exacerbated by SLO2CRISPR
is exacerbated by SLO2DN.UAS
is ameliorated by AccB131
is ameliorated by FASN1KK107330
is ameliorated by SREBP189
is ameliorated by SREBP52
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
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
Pathways
Signaling Pathways (FlyBase)
Metabolic Pathways
FlyBase
External Links
KEGG Metabolic Pathways - A collection of manually drawn metabolic pathway maps representing knowledge of molecular interaction, reaction and relation networks.
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)
X
Recombination map
1-53
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
14B7-14B7
Limits computationally determined from genome sequence between P{EP}kat80EP620&P{EP}cazEP1564 and P{EP}Cyp1EP1073&P{EP}Dsp1EP355
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
14A-14B
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location

1-53.5

Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (15)
Genomic Clones (21)
cDNA Clones (92)
 

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
       
        Other Comments

        dsRNA made from templates generated with primers directed against this gene tested in RNAi screen for effects on Kc167 and S2R+ cell morphology.

        Mutants lack either alpha lobes or beta lobes of the mushroom body. Gamma lobes are normal. Learning and memory are normal.

        At temperatures ranging from 20oC to 37.5oC temperature sensitive mutants exhibit no effect on the heart rate of larvae.

        The eas bang sensitivity is due to an excitability defect caused by altered membrane lipid composition.

        Relationship to Other Genes
        Source for database merge of

        Source for merge of: eas ala

        Additional comments

        Separable by recombination from bss (which causes similar phenotype), to which eas is closely linked.

        Nomenclature History
        Source for database identify of
        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (16)
        Reported As
        Symbol Synonym
        EP770
        PC80
        RH11
        eas
        (Cuddapah et al., 2025, Karge et al., 2025, Fischer et al., 2024, Kasuya et al., 2023, Silva-Cardoso and N'Gouemo, 2023, Kelly et al., 2022, Majane et al., 2022, Saha et al., 2022, Banerjee et al., 2021, Byers et al., 2021, Lasko and Lüthy, 2021, Mituzaite et al., 2021, Ostalé et al., 2021, Dare et al., 2020, Hope et al., 2020, Jacobs and Sehgal, 2020, Martínez et al., 2020, Takai et al., 2020, Fogle et al., 2019, Kasuya et al., 2019, Radlicz et al., 2019, Tsai et al., 2019, Cho et al., 2018, Johan Arief et al., 2018, Reynolds, 2018, Sundararajan and Miller, 2018, Zhang et al., 2018, Li et al., 2017, Meltzer et al., 2017, Saras et al., 2017, Saras and Tanouye, 2016, Saras and Tanouye, 2016, Woinski and Reynolds, 2016, Di Cara et al., 2015, Kroll et al., 2015, Kroll et al., 2015, Ashwal-Fluss et al., 2014, Iyengar and Wu, 2014, Muthukumar et al., 2014, Toshima et al., 2014, Holth et al., 2013, Howlett and Tanouye, 2013, Howlett et al., 2013, Stone et al., 2013, Yin et al., 2013, Burg and Wu, 2012, Nesic et al., 2012, Winbush et al., 2012, Lim et al., 2011, Parker et al., 2011, Hekmat-Scafe et al., 2010, Kliman et al., 2010, Pauli et al., 2010, Whelan et al., 2010, Fergestad et al., 2008, Lim et al., 2008, Lindsay et al., 2008, Mensch et al., 2008, Song et al., 2008, Buszczak et al., 2007, Quinones-Coello, 2007, Reynolds et al., 2007, Song and Tanouye, 2007, Song et al., 2007, Fergestad et al., 2006, Hekmat-Scafe et al., 2006, Lee and Wu, 2006, Legube et al., 2006, Song and Tanouye, 2006, Reynolds et al., 2004, Tan et al., 2004, Kuebler et al., 2001, Nyako et al., 2001, Kuebler and Tanouye, 2000)
        Secondary FlyBase IDs
        • FBgn0043963
        • FBgn0044449
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 72 )
        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.
        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
        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
        FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
        iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
        Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
        KEGG Metabolic Pathways - A collection of manually drawn metabolic pathway maps representing knowledge of molecular interaction, reaction and relation networks.
        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
        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 (184)