FB2024_04 , released June 25, 2024
Gene: Dmel\Baldspot
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General Information
Symbol
Dmel\Baldspot
Species
D. melanogaster
Name
Baldspot
Annotation Symbol
CG3971
Feature Type
FlyBase ID
FBgn0260960
Gene Model Status
Stock Availability
Enzyme Name (EC)
very-long-chain 3-oxoacyl-CoA synthase (2.3.1.199)
Gene Summary
Baldspot (Baldspot) encodes a protein involved in spermatogenesis. [Date last reviewed: 2019-09-19] (FlyBase Gene Snapshot)
Also Known As

noa, l(3)neo21, l(3)neo22, l(3)02281, blp

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-44
RefSeq locus
NT_037436 REGION:16648442..16661615
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (11 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from mutant phenotype
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from sequence or structural similarity with HGNC:15829
inferred from electronic annotation with InterPro:IPR002076
inferred from sequence or structural similarity with FLYBASE:bond; FB:FBgn0260942
inferred from biological aspect of ancestor with PANTHER:PTN000125390
Biological Process (7 terms)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from mutant phenotype
Terms Based on Predictions or Assertions (7 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with FLYBASE:bond; FB:FBgn0260942
inferred from sequence or structural similarity with HGNC:15829
inferred from biological aspect of ancestor with PANTHER:PTN000125390
Cellular Component (3 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
inferred from biological aspect of ancestor with PANTHER:PTN000125390
inferred from sequence model
located_in membrane
inferred from electronic annotation with InterPro:IPR002076
Gene Group (FlyBase)
Protein Family (UniProt)
Belongs to the ELO family. ELOVL6 subfamily. (Q9VV87)
Catalytic Activity (EC/Rhea)
fatty acid elongase activity
a very-long-chain acyl-CoA + H(+) + malonyl-CoA = a very-long-chain 3-oxoacyl-CoA + CO2 + CoA (2.3.1.199)
RHEA 32727:
Summaries
Gene Snapshot
Baldspot (Baldspot) encodes a protein involved in spermatogenesis. [Date last reviewed: 2019-09-19]
Gene Group (FlyBase)
FATTY ACID ELONGASES -
Fatty acid elongation occurs in three cellular compartments: the cytosol, mitochondria, and endoplasmic reticulum (microsomes). Microsomal fatty acid elongation is considered the predominant pathway for elongating fatty acids 12-carbons and longer. This pathway utilizes fatty acids derived from endogenous pathways, like de novo lipogenesis, as well as exogenous fatty acids derived from the diet. The overall pathway for microsomal fatty acid elongation involves four enzymes and fatty acyl CoA, malonyl CoA, and NADPH as substrates. In step 1, a 3-keto acyl-CoA synthase catalyzes the condensation of malonyl CoA with a fatty acyl-CoA precursor. These enzymes are called elongases and have been given the designation 'Elovl' for 'elongation of very long fatty acids'. They are conserved from yeast to mammals. The very-long-chain fatty acids they produce are essential for sphingolipid formation and function. (Adapted from PMID:16564093 and PMID:19763486.)
Protein Function (UniProtKB)
Catalyzes the first and rate-limiting reaction of the four reactions that constitute the long-chain fatty acids elongation cycle (PubMed:26214738). This process allows the addition of 2 carbons to the chain of long- and very long-chain fatty acids (VLCFAs) per cycle (PubMed:26214738). Condensing enzyme that elongates fatty acids with 12, 14 and 16 carbons with higher activity toward C16:0 acyl-CoAs (By similarity). Catalyzes the synthesis of unsaturated C16 long chain fatty acids and, to a lesser extent, C18:0 and those with low desaturation degree (By similarity). May participate in the production of saturated and monounsaturated VLCFAs of different chain lengths that are involved in multiple biological processes as precursors of membrane lipids and lipid mediators (By similarity).
(UniProt, Q9VV87)
Gene Model and Products
Number of Transcripts
2
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Baldspot 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 Q9VV87)

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 5.45

Annotated transcripts do not represent all supported alternative splices within 5' UTR.

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

Gene model reviewed during 5.49

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0075355
2784
316
FBtr0075356
2445
316
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
Polypeptides with Identical Sequences

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

316 aa isoforms: Baldspot-PA, Baldspot-PB
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Crossreferences
InterPro - A database of protein families, domains and functional sites
Linkouts
Sequences Consistent with the Gene Model
Nucleotide / Polypeptide Records
 
Mapped Features

Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Baldspot using the Feature Mapper tool.

External Data
Crossreferences
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).

-0.82

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

Comment: maternally supplied; predominantly short isoform

organism

Comment: maternally deposited

egg

Comment: predominantly short isoform

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

Comment: predominantly long isoform

ovary

Comment: predominantly short isoform

Additional Descriptive Data

The shorter (2.3 kb) Baldspot transcipt is expressed more strongly in females than the longer (3.0 kb) transcipt, while the longer Baldspot transcript is expressed more heavily in males. The difference is largely due to expression in the ovaries and testes, respectively; the longer transcript is the predominant isoform in both male and female carcasses. In unfertilized eggs and early embryos, the short Baldspot isoform predominates; it quickly declines at blastoderm stages, as levels of the longer isoform increase. At later stages Baldspot transcript is expressed at low levels in the involuting mesoderm, and in the invaginating foregut and hindgut. Baldspot transcript is prominently expressed in the developing CNS and PNS.

Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Evidence
References
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\Baldspot 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 ( 40 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 10 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Baldspot
Transgenic constructs containing regulatory region of Baldspot
Aberrations (Deficiencies and Duplications) ( 5 )
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) (7)
14 of 14
Yes
Yes
 
2  
11 of 14
No
Yes
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
4 of 14
No
No
1  
4 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) (7)
14 of 14
Yes
Yes
10 of 14
No
Yes
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
4 of 14
No
No
4 of 14
No
No
Mus musculus (laboratory mouse) (7)
13 of 14
Yes
Yes
10 of 14
No
Yes
5 of 14
No
No
5 of 14
No
No
5 of 14
No
No
4 of 14
No
No
4 of 14
No
No
Xenopus tropicalis (Western clawed frog) (12)
11 of 13
Yes
Yes
7 of 13
No
Yes
4 of 13
No
Yes
4 of 13
No
Yes
2 of 13
No
No
2 of 13
No
No
2 of 13
No
No
2 of 13
No
No
1 of 13
No
No
1 of 13
No
Yes
1 of 13
No
No
1 of 13
No
No
Danio rerio (Zebrafish) (13)
14 of 14
Yes
Yes
13 of 14
No
Yes
13 of 14
No
Yes
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
No
4 of 14
No
No
3 of 14
No
No
3 of 14
No
No
3 of 14
No
No
Caenorhabditis elegans (Nematode, roundworm) (9)
13 of 14
Yes
Yes
9 of 14
No
Yes
9 of 14
No
Yes
8 of 14
No
Yes
8 of 14
No
Yes
7 of 14
No
Yes
7 of 14
No
Yes
7 of 14
No
Yes
3 of 14
No
Yes
Anopheles gambiae (African malaria mosquito) (20)
12 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (4)
6 of 13
Yes
No
6 of 13
Yes
No
5 of 13
No
Yes
4 of 13
No
Yes
Saccharomyces cerevisiae (Brewer's yeast) (3)
9 of 13
Yes
Yes
8 of 13
No
Yes
7 of 13
No
No
Schizosaccharomyces pombe (Fission yeast) (2)
6 of 12
Yes
No
4 of 12
No
No
Escherichia coli (enterobacterium) (0)
Other Organism Orthologs (via OrthoDB)
Data provided directly from OrthoDB:Baldspot. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
Drosophila melanogaster (Fruit fly) (21)
9 of 13
9 of 13
9 of 13
9 of 13
9 of 13
9 of 13
9 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
8 of 13
7 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.
    Dmel gene
    Ortholog showing functional complementation
    Supporting References
    Interactions
    Summary of Physical Interactions
    esyN Network Diagram
    Other Interaction Browsers
    Summary of Genetic Interactions
    esyN Network Diagram
    Show/hide secondary interactors 
    (data from AllianceMine provided by esyN)
    esyN Network Key:
    Suppression
    Enhancement
    Other 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.
    Pathways
    Signaling Pathways (FlyBase)
    Metabolic Pathways
    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.
    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
    73B4-73B5
    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
    73B5-73B6
    (determined by in situ hybridisation)
    73B1-73B7
    73B3--4 73B5--6
    73C-73C
    (determined by in situ hybridisation) 73B (determined by in situ hybridisation)
    Experimentally Determined Recombination Data
    Location
    Left of (cM)
    Right of (cM)
    Notes
    Stocks and Reagents
    Stocks (23)
    Genomic Clones (23)
    cDNA Clones (143)
     

    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
        Relationship to Other Genes
        Source for database merge of

        Source for merge of: l(3)neo22 l(3)neo21

        Source for merge of: Baldspot l(3)neo22

        Source for merge of: Baldspot NEST:bs18f10 NEST:bs18g10

        Source for merge of: Baldspot noa

        Additional comments

        Source for identity of Baldspot CG3971 was sequence comparison ( date:000615 ).

        Nomenclature History
        Source for database identify of

        Source for identity of: Baldspot CG3971

        Nomenclature comments
        Etymology
        Synonyms and Secondary IDs (16)
        Reported As
        Secondary FlyBase IDs
        • FBgn0036650
        • FBgn0010775
        • FBgn0011458
        • FBgn0013626
        • FBgn0045248
        • FBgn0045250
        • FBgn0027947
        Datasets (0)
        Study focus (0)
        Experimental Role
        Project
        Project Type
        Title
        Study result (0)
        Result
        Result Type
        Title
        External Crossreferences and Linkouts ( 86 )
        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 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
        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
        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)
        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.
        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 (87)