FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\chm
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General Information
Symbol
Dmel\chm
Species
D. melanogaster
Name
chameau
Annotation Symbol
CG5229
Feature Type
FlyBase ID
FBgn0028387
Gene Model Status
Stock Availability
Gene Summary
chameau (chm) encodes a histone acetyl transferase involved in epigenetic mechanisms of transcriptional control and regulation of replication origin activity. Its functions include modulation of JNK activity and gene regulation by Polycomb group genes. [Date last reviewed: 2019-03-07] (FlyBase Gene Snapshot)
Also Known As

HAT1, HAT

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
2-26
RefSeq locus
NT_033779 REGION:7412417..7422736
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (22 terms)
Molecular Function (8 terms)
Terms Based on Experimental Evidence (5 terms)
CV Term
Evidence
References
inferred from physical interaction with FLYBASE:Jra; FB:FBgn0001291
inferred from physical interaction with FLYBASE:kay; FB:FBgn0001297
inferred from direct assay
Terms Based on Predictions or Assertions (6 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN004172926
inferred from electronic annotation with InterPro:IPR002717
traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN004172926
Biological Process (11 terms)
Terms Based on Experimental Evidence (8 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
Cellular Component (3 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
located_in nucleus
inferred from direct assay
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
is_active_in chromatin
inferred from biological aspect of ancestor with PANTHER:PTN004172926
is_active_in nucleus
inferred from biological aspect of ancestor with PANTHER:PTN004172926
located_in nucleus
inferred from electronic annotation with InterPro:IPR002515, InterPro:IPR036060
Gene Group (FlyBase)
Protein Family (UniProt)
-
Catalytic Activity (EC/Rhea)
histone acetyltransferase activity
RHEA 21992:
Summaries
Gene Snapshot
chameau (chm) encodes a histone acetyl transferase involved in epigenetic mechanisms of transcriptional control and regulation of replication origin activity. Its functions include modulation of JNK activity and gene regulation by Polycomb group genes. [Date last reviewed: 2019-03-07]
Gene Group (FlyBase)
HISTONE ACETYLTRANSFERASES -
Histone acetyltransferases catalyze the acetylation of conserved lysine residues on histone proteins by transferring an acetyl group from acetyl CoA to form ε-N-acetyl lysine. (Adapted from PMID:11395403).
Summary (Interactive Fly)

histone acetyltransferase - acts as antagonistic cofactor to the histone deacetylase Rpd3 to modulate JNK-dependent transcription during pupal thorax metamorphosis and JNK-induced apoptosis - recruited by DJun and DFos

Gene Model and Products
Number of Transcripts
3
Number of Unique Polypeptides
2

Please see the JBrowse view of Dmel\chm 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 Q9VM15)

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 5.45

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0079443
2955
811
FBtr0308610
2422
703
FBtr0332523
3302
811
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
FBpp0079071
89.6
811
9.76
FBpp0300834
77.1
703
9.80
FBpp0304793
89.6
811
9.76
Polypeptides with Identical Sequences

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

811 aa isoforms: chm-PA, chm-PC
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\chm 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).

0.39

Transcript Expression
Polypeptide Expression
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
located_in nucleus
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\chm 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
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 15 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 16 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of chm
Transgenic constructs containing regulatory region of chm
Aberrations (Deficiencies and Duplications) ( 1 )
Inferred from experimentation ( 1 )
Inferred from location ( 7 )
Variants
Variant Molecular Consequences
Alleles Representing Disease-Implicated Variants
Phenotypes
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (6)
12 of 14
Yes
Yes
3 of 14
No
No
3 of 14
No
No
3 of 14
No
No
3 of 14
No
No
1 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) (5)
11 of 14
Yes
Yes
3 of 14
No
No
2 of 14
No
No
2 of 14
No
No
2 of 14
No
No
Mus musculus (laboratory mouse) (6)
12 of 14
Yes
Yes
3 of 14
No
No
3 of 14
No
No
3 of 14
No
No
2 of 14
No
No
1 of 14
No
No
Xenopus tropicalis (Western clawed frog) (7)
8 of 13
Yes
Yes
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (8)
12 of 14
Yes
Yes
9 of 14
No
Yes
3 of 14
No
No
3 of 14
No
No
3 of 14
No
No
2 of 14
No
No
1 of 14
No
Yes
1 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (5)
5 of 14
Yes
Yes
3 of 14
No
No
3 of 14
No
No
2 of 14
No
No
1 of 14
No
Yes
Anopheles gambiae (African malaria mosquito) (7)
9 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (2)
4 of 13
Yes
No
4 of 13
Yes
No
Saccharomyces cerevisiae (Brewer's yeast) (3)
5 of 13
Yes
Yes
3 of 13
No
No
2 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (2)
6 of 12
Yes
Yes
3 of 12
No
No
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:chm. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (7)
7 of 13
6 of 13
6 of 13
5 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 ( 0 )
    Allele
    Disease
    Evidence
    References
    Potential Models Based on Orthology ( 0 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 1 )
    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.
    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
    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
    2-26
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    27F3-27F4
    Limits computationally determined from genome sequence between P{PZ}wg02657 and P{EP}EP787EP787
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    28A-28A
    (determined by in situ hybridisation)
    Experimentally Determined Recombination Data
    Location
    Left of (cM)
    Right of (cM)
    Notes
    Stocks and Reagents
    Stocks (15)
    Genomic Clones (18)
     

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

    cDNA Clones (67)
     

    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

        chm and Rpd3 act as antagonistic cofactors of Jra and kay proteins to modulate JNK-dependent transcription during thorax metamorphosis and JNK-induced apoptosis. chm enhances JNK signaling during thorax closure during metamorphosis and acts positively in the JNK-dependent apoptotic pathway.

        dsRNA has been made from templates generated with primers directed against this gene. RNAi of chm causes an increase in the number of class I da neurons. RNAi also causes alterations in the number of MD neurons and defects in dendrite morphogenesis.

        chm is required for the maintenance of Hox gene silencing by Pc group proteins.

        chm may have a role in chromatin mediated gene silencing.

        Mutations in chm result in late pupal lethality. Pharate adults have ectopic macrochaetae on the scutellum and on the thorax, and occasionally a large cleft separates the two hemithoraces.

        Relationship to Other Genes
        Source for database merge of

        Source for merge of: chm HAT

        Additional comments

        Source for identity of HAT CG5229 was sequence comparison ( date:000327 ).

        Nomenclature History
        Source for database identify of

        Source for identity of: HAT CG5229

        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (9)
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 57 )
        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
        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
        Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
        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 (102)