FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Gene: Dmel\Hsp67Bc
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General Information
Symbol
Dmel\Hsp67Bc
Species
D. melanogaster
Name
Heat shock gene 67Bc
Annotation Symbol
CG4190
Feature Type
FlyBase ID
FBgn0001229
Gene Model Status
Stock Availability
Gene Summary
Heat shock gene 67Bc (Hsp67Bc) encodes a small heat shock protein (hsp) that binds to the product encoded by stv to regulate protein lipidation. The product of Hsp67Bc also induces the phosphorylation of eIF2α protein and stimulates autophagy, thereby facilitating the clearance of misfolded proteins. Hsp67Bc expression can be regulated by the product of pcm. [Date last reviewed: 2018-09-13] (FlyBase Gene Snapshot)
Also Known As

gene 3

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-29
RefSeq locus
NT_037436 REGION:9371511..9372497
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (9 terms)
Molecular Function (2 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from physical interaction with FLYBASE:stv; FB:FBgn0086708
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from sequence model
inferred from biological aspect of ancestor with PANTHER:PTN000897708
Biological Process (5 terms)
Terms Based on Experimental Evidence (3 terms)
CV Term
Evidence
References
inferred from mutant phenotype
inferred from mutant phenotype
involved_in response to heat
inferred from direct assay
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
involved_in protein folding
inferred from sequence model
involved_in protein refolding
inferred from biological aspect of ancestor with PANTHER:PTN000897708
involved_in response to heat
inferred from biological aspect of ancestor with PANTHER:PTN000897708
Cellular Component (2 terms)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
is_active_in cytoplasm
inferred from biological aspect of ancestor with PANTHER:PTN000897708
is_active_in nucleus
inferred from biological aspect of ancestor with PANTHER:PTN000897708
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the small heat shock protein (HSP20) family. (P22979)
Summaries
Gene Snapshot
Heat shock gene 67Bc (Hsp67Bc) encodes a small heat shock protein (hsp) that binds to the product encoded by stv to regulate protein lipidation. The product of Hsp67Bc also induces the phosphorylation of eIF2α protein and stimulates autophagy, thereby facilitating the clearance of misfolded proteins. Hsp67Bc expression can be regulated by the product of pcm. [Date last reviewed: 2018-09-13]
Gene Group (FlyBase)
SMALL HEAT SHOCK PROTEINS -
The small Heat Shock Protein (sHSP) family is characterized by the presence of an α-crystallin domain. sHSPs play a crucial role in protein folding. Most sHSPs have the ability to prevent protein aggregation and to maintain substrate proteins in a refoldable state. (Adapted from FBrf0228040 and FBrf0231212).
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
Hsp22 - Hsp-G3
There are seven closely related heat-shock genes at 67B (Ayme and Tissieres, 1985; Pauli, Arrigo, Vasquez, Tonka, and Tissieres, 1989, Genome 31: 671-76). In addition to the four small heat-shock genes previously identified (Hsp22, Hsp23, Hsp26, and Hsp27), three more genes (Hsp-G1, Hsp-G2, and Hsp-G3, formerly called Gene1, Gene2, and Gene3) have been found clustered within 15 kb of DNA at the same 67B cytological location. All seven genes are heat-shock inducible in almost all cells at the stages tested (Ayme and Tissieres, 1985). The genes are also transcribed during certain developmental stages in the absence of heat shock (Sirotkin and Davidson, 1982, Dev. Biol. 89: 196-210). Pauli et al (1989) report that the maximum accumulation of developmental rRNA in a majority of these small heat-shock genes occurs in the white pupae stage; in Hsp-G2, however, a small transcipt is found in embryos, first and second instar larvae, and young pupae; and a larger transcript in the pupal and adult stages of males (Pauli and Tonka, 1987, J. Mol. Biol. 198: 235-40; Pauli, Tonka, and Ayme-Southgate, 1988, J. Mol. Biol. 200: 47-53). In absence of stress, the expression of Hsp26 has been observed in spermatocytes, nurse cells, epithelium, imaginal discs, proventriculus, and neurocytes (Glaser, Wolfner, and Lis, 1986, EMBO 5: 747-54). Transcripts of Hsp26 and Hsp27 accumulate in adult ovaries, apparently originating in nurse cells (Zimmerman, Petri, and Meselson, 1983, Cell 32: 1161-70).
Gene Model and Products
Number of Transcripts
1
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Hsp67Bc 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 P22979)

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 5.46

Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0076497
987
199
Additional Transcript Data and Comments
Reported size (kB)

2.3, 1.6, 1.075 (northern blot)

Comments
External Data
Crossreferences
Polypeptide Data
Annotated Polypeptides
Name
FlyBase ID
Predicted MW (kDa)
Length (aa)
Theoretical pI
UniProt
RefSeq ID
GenBank
FBpp0076225
22.2
199
6.57
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)

169 (aa); 18.792 (kD predicted)

Comments
External Data
Crossreferences
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\Hsp67Bc 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).

-0.36

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

Comment: maternally deposited

northern blot
Stage
Tissue/Position (including subcellular localization)
Reference

Comment: reference states >=7 hr AEL

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\Hsp67Bc 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
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 2 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 9 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Hsp67Bc
Transgenic constructs containing regulatory region of Hsp67Bc
Aberrations (Deficiencies and Duplications) ( 0 )
Inferred from experimentation ( 0 )
Inferred from location ( 4 )
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) (12)
Hsap\CRYAA2
7 of 14
Yes
No
7 of 14
Yes
No
6 of 14
No
No
6  
5 of 14
No
No
4 of 14
No
Yes
4 of 14
No
Yes
2  
4 of 14
No
Yes
7  
3 of 14
No
No
3  
3 of 14
No
Yes
3  
3 of 14
No
Yes
1 of 14
No
Yes
1 of 14
No
Yes
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (10)
7 of 14
Yes
No
7 of 14
Yes
No
6 of 14
No
No
4 of 14
No
Yes
4 of 14
No
Yes
4 of 14
No
Yes
3 of 14
No
No
3 of 14
No
Yes
3 of 14
No
Yes
1 of 14
No
Yes
Mus musculus (laboratory mouse) (10)
7 of 14
Yes
No
7 of 14
Yes
No
6 of 14
No
No
4 of 14
No
Yes
4 of 14
No
Yes
3 of 14
No
No
3 of 14
No
Yes
3 of 14
No
Yes
2 of 14
No
Yes
1 of 14
No
Yes
Xenopus tropicalis (Western clawed frog) (15)
5 of 13
Yes
No
5 of 13
Yes
No
5 of 13
Yes
No
3 of 13
No
Yes
3 of 13
No
Yes
3 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
Yes
2 of 13
No
Yes
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (13)
7 of 14
Yes
No
7 of 14
Yes
No
6 of 14
No
No
6 of 14
No
No
4 of 14
No
Yes
4 of 14
No
Yes
4 of 14
No
No
3 of 14
No
No
3 of 14
No
Yes
3 of 14
No
No
3 of 14
No
Yes
2 of 14
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (19)
7 of 14
Yes
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
6 of 14
No
No
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
5 of 14
No
Yes
4 of 14
No
No
3 of 14
No
Yes
2 of 14
No
No
1 of 14
No
Yes
Anopheles gambiae (African malaria mosquito) (8)
Arabidopsis thaliana (thale-cress) (17)
4 of 13
Yes
No
4 of 13
Yes
No
4 of 13
Yes
No
4 of 13
Yes
No
4 of 13
Yes
Yes
4 of 13
Yes
No
4 of 13
Yes
No
4 of 13
Yes
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
3 of 13
No
No
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
Saccharomyces cerevisiae (Brewer's yeast) (0)
Schizosaccharomyces pombe (Fission yeast) (2)
1 of 12
Yes
No
1 of 12
Yes
Yes
Escherichia coli (enterobacterium) (2)
2 of 11
Yes
No
2 of 11
Yes
No
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Hsp67Bc. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (10)
10 of 13
10 of 13
9 of 13
9 of 13
9 of 13
8 of 13
7 of 13
7 of 13
7 of 13
7 of 13
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 2 )
Potential Models Based on Orthology ( 5 )
Modifiers Based on Experimental Evidence ( 1 )
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?
Hsap\CRYAA2
7 of 14
      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
      Pathways
      Signaling Pathways (FlyBase)
      Metabolic Pathways
      FlyBase
      External Links
      External Data
      Linkouts
      Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
      Class of Gene
      Genomic Location and Detailed Mapping Data
      Chromosome (arm)
      3L
      Recombination map
      3-29
      Cytogenetic map
      Sequence location
      FlyBase Computed Cytological Location
      Cytogenetic map
      Evidence for location
      67B2-67B2
      Limits computationally determined from genome sequence between P{PZ}l(3)0162901629&P{PZ}mRpL1210534 and P{EP}Hsp26EP3336&P{EP}Hsp26EP3315
      Experimentally Determined Cytological Location
      Cytogenetic map
      Notes
      References
      Experimentally Determined Recombination Data
      Location
      Left of (cM)
      Right of (cM)
      Notes
      Stocks and Reagents
      Stocks (6)
      Genomic Clones (20)
      cDNA Clones (24)
       

      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
         

        polyclonal

        Commercially Available Antibodies
         
        Cell Line Information
        Publicly Available Cell Lines
         
          Other Stable Cell Lines
           
            Other Comments

            In unshocked cells Hsp83 is moderately transcribed while transcription from the other heat shock genes is undetectable. Engaged but paused RNA molecules are found at the various Hsp70 and Hsp26 genes but not at the other heat shock genes. Increased transcription of the heat shock genes is observed within 1-2 mins of heat shock and maximal rates were reached within 2-5 minutes. Rates of transcription vary over a 20-fold range.

            Exposure of cells to pulses of elevated temperature initiates the heat-shock response. A restricted subset of genes, the Hsp genes, is activated and the majority of transcription and translation is shut down. 3H-uridine incorporation ceases at its usual positions and commences at new puff sites. Preexisting polysomes disaggregate and within a few minutes a new population of polysomes appears containing newly transcribed mRNA; this RNA hybridizes to some of the heat-shock puffs. Similar response inducible by other stressful treatments. The response may be elicited at all stages of the life cycle and in cultured cells.

            The binding sites for the protein factors required for activation of transcription of Hsp genes are multiple short upstream sequence elements called HSEs or heat shock consensus elements.

            Activation of transcription of Hsp genes apparently involves the sequential binding of two or more protein factors in vicinity of TATA box.

            Polymerase II dissociates from most chromosome regions and accumulates at the new heat shock puff sites upon heat shock.

            Hsp67Bc is transcribed during certain developmental stages in the absence of heat shock.

            The effects of heat shock may be abrogated to some degree by pretreatment with a pulse of a slightly lower temperature.

            Mitochondrial and histone-gene activities persist transcription and translation.

            In polytene cells, during heat shock response, existing puffs regress and a novel group quickly appear at 33B, 63C, 64F, 67B, 70A, 87A, 87C, 93D, 95D.

            The heat shock response follows a pulse of 36oC to 40oC; treatments above 40oC inhibit all activity and lead to death; treatments of 30oC-35oC induce heat-shock-protein synthesis without repressing normal protein synthesis.

            In polytene cells, during heat shock response, existing puffs regress and a novel group quickly appear at cytological locations 33B, 63C, 64F, 67B, 70A, 87A, 87C, 93D, 95D.

            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 (22)
            Reported As
            Symbol Synonym
            Dm-HSP67Bc
            Dmel18.0
            Hsp-G3
            gene-3
            small hsp locus 67B
            Name Synonyms
            Heat shock gene 67Bc
            Secondary FlyBase IDs
              Datasets (0)
              Study focus (0)
              Experimental Role
              Project
              Project Type
              Title
              Study result (0)
              Result
              Result Type
              Title
              External Crossreferences and Linkouts ( 30 )
              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)
              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
              FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
              MIST (protein-protein) - An integrated Molecular Interaction Database
              Reactome - An open-source, open access, manually curated and peer-reviewed pathway database.
              References (106)