FB2024_03 , released June 25, 2024
Gene: Dmel\Fuca
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General Information
Symbol
Dmel\Fuca
Species
D. melanogaster
Name
α-L-fucosidase
Annotation Symbol
CG6128
Feature Type
FlyBase ID
FBgn0285958
Gene Model Status
Stock Availability
Enzyme Name (EC)
alpha-L-fucosidase (3.2.1.51)
Gene Summary
α-L-fucosidase (Fuca) encodes an enzyme belonging to the family of hydrolases. It has also been identified as a transmembrane protein in the plasma-membrane of spermatozoa. Its roles include N-glycan degradation, glycan structure degradation, and is potentially involved in fertilization, particularly in initial sperm-egg recognition. [Date last reviewed: 2019-03-28] (FlyBase Gene Snapshot)
Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-36
RefSeq locus
NT_037436 REGION:11518798..11522713
Sequence
Genomic Maps
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
Gene Ontology (GO) Annotations (10 terms)
Molecular Function (2 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
traceable author statement
inferred from electronic annotation with InterPro:IPR000933, InterPro:IPR016286
Biological Process (5 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from mutant phenotype
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000003123
inferred from electronic annotation with InterPro:IPR016286
non-traceable author statement
inferred from biological aspect of ancestor with PANTHER:PTN000003123
Cellular Component (3 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
is_active_in lysosome
inferred from biological aspect of ancestor with PANTHER:PTN000003123
Protein Family (UniProt)
Belongs to the glycosyl hydrolase 29 family. (Q9VTJ4)
Catalytic Activity (EC/Rhea)
alpha-L-fucosidase activity
an alpha-L-fucoside + H2O = an alcohol + L-fucose (3.2.1.51)
RHEA 12288:
Summaries
Gene Snapshot
α-L-fucosidase (Fuca) encodes an enzyme belonging to the family of hydrolases. It has also been identified as a transmembrane protein in the plasma-membrane of spermatozoa. Its roles include N-glycan degradation, glycan structure degradation, and is potentially involved in fertilization, particularly in initial sperm-egg recognition. [Date last reviewed: 2019-03-28]
Gene Group (FlyBase)
UNCLASSIFIED O-GLYCOSYL HYDROLASES -
This group comprises O-glycosyl hydrolases that do not classify under other groups in FlyBase.
Protein Function (UniProtKB)
Alpha-L-fucosidase is responsible for hydrolyzing the alpha-1,6-linked fucose joined to the reducing-end N-acetylglucosamine of the carbohydrate moieties of glycoproteins.
(UniProt, Q9VTJ4)
Phenotypic Description (Red Book; Lindsley and Zimm 1992)
Fuc: alpha-Fucosidase
Structural gene for alpha fucosidase (EC 3.2.1.51). A diffuse intermediate zone of activity in FucF/FucS heterozygotes suggests multimeric nature of enzyme (MacIntyre). Flies heterozygous for a null allele and a deficiency for Fuc are viable and fertile (Bond).
Gene Model and Products
Number of Transcripts
2
Number of Unique Polypeptides
1

Please see the JBrowse view of Dmel\Fuca 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 Q9VTJ4)

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 6.02

Gene model reviewed during 5.45

Gene model reviewed during 5.43

Gene model reviewed during 6.05

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0100588
1675
494
FBtr0346860
3513
494
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
FBpp0100046
57.7
494
5.66
FBpp0312400
57.7
494
5.66
Polypeptides with Identical Sequences

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

494 aa isoforms: Fuca-PB, Fuca-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\Fuca 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).

4.41

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

Fuca transcripts are detected by RT-PCR in the male testis, accessory gland, ejaculatory bulb, ejaculatory duct, and brain. Similar levels are found in the female brain. Lower levels are found in ovary and midgut. On northern blots, the long Fuca transcript is present in all samples while the shorter transcript is observed in brain. In situ hybridization on male reproductive apparatus shows weak expression in spermatogonia, and more robust expression from premeiotic spermatocytes up to round spermatids. Low levels are seen in elongating spermatid cysts. No expression is seen in stem cells. Expression is also observed in the terminal epithelium of the testis, and in the epithelium of seminal vesicles, male accessory glands, and ejaculatory duct. In ovaries, strong expression is observed in nurse cells from stage 1-10 and absent from the oocyte. Weak expression is seen at stages 12-14 in the nurse apical cluster.

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
inferred from direct assay
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

JBrowse - Visual display of RNA-Seq signals

View Dmel\Fuca 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
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 6 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 2 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Fuca
Transgenic constructs containing regulatory region of Fuca
Aberrations (Deficiencies and Duplications) ( 1 )
Inferred from experimentation ( 1 )
Gene disrupted in
Inferred from location ( 0 )
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
Orthologs
Human Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Homo sapiens (Human) (2)
13 of 14
Yes
Yes
11 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) (2)
13 of 14
Yes
Yes
10 of 14
No
Yes
Mus musculus (laboratory mouse) (2)
13 of 14
Yes
Yes
10 of 14
No
Yes
Xenopus tropicalis (Western clawed frog) (3)
7 of 13
Yes
Yes
5 of 13
No
Yes
1 of 13
No
No
Danio rerio (Zebrafish) (3)
13 of 14
Yes
Yes
11 of 14
No
Yes
11 of 14
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (1)
13 of 14
Yes
Yes
Anopheles gambiae (African malaria mosquito) (1)
11 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (1)
4 of 13
Yes
Yes
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:Fuca. Refer to their site for version information.
Paralogs
Paralogs (via DIOPT v9.1)
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 ( 1 )
    Human Ortholog
    Disease
    Evidence
    References
    Modifiers Based on Experimental Evidence ( 0 )
    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.
    Homo sapiens (Human)
    Gene name
    Score
    OMIM
    OMIM Phenotype
    DO term
    Complementation?
    Transgene?
    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
    esyN Network Diagram
    Other Interaction Browsers
    Summary of Genetic Interactions
    esyN Network Diagram
    Other Interaction Browsers
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    Starting gene(s)
    Interaction type
    Interacting gene(s)
    Reference
    External Data
    Linkouts
    Pathways
    Signaling Pathways (FlyBase)
    Metabolic Pathways
    KEGG Metabolic Pathways - A collection of manually drawn metabolic pathway maps representing knowledge of molecular interaction, reaction and relation networks.
    External Data
    Linkouts
    KEGG Pathways - A collection of manually drawn pathway maps representing knowledge of molecular interaction, reaction and relation networks.
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    3L
    Recombination map
    3-36
    Cytogenetic map
    Sequence location
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    68C12-68C12
    Limits computationally determined from genome sequence between P{PZ}l(3)0123901239&P{lacW}l(3)01239j9B4 and P{PZ}CycA02461&P{PZ}CycA03946
    Experimentally Determined Cytological Location
    Cytogenetic map
    Notes
    References
    Experimentally Determined Recombination Data
    Left of (cM)
    Right of (cM)
    Notes

    Mapping based on 45 recombinants between h and st.

    Stocks and Reagents
    Stocks (4)
    Genomic Clones (12)
     

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

    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
      Antibody Information
      Laboratory Generated Antibodies
      Commercially Available Antibodies
       
      Cell Line Information
      Publicly Available Cell Lines
       
        Other Stable Cell Lines
         
          Other Comments

          Expression is enriched in embryonic gonads.

          α-fucosidase dosage sensitive regions mapped, by segmental aneuploidy, to 52E--54F and 88C--91B. Their relationship to Fuc is not clear.

          Structural gene for α fucosidase. A diffuse intermediate zone of activity in FucF/FucS heterozygotes suggests multimeric nature of enzyme (MacIntyre).

          Relationship to Other Genes
          Source for database merge of

          Source for merge of: Fuca Fuc

          Additional comments

          One or more of the processed transcripts for these genes contain two non-overlapping open reading frames (ORFs). The non-overlapping ORFs are represented by CG6128 (FBgn0036169), CG11714 (FBgn0036170).

          Dicistronic annotation CG33047 split out into separate annotations for each open reading frame, CG11714 and CG6128, in release 4.2 of the genome annotation.

          Nomenclature History
          Source for database identify of

          Source for identity of: Fuca CG6128

          Nomenclature comments
          Etymology
          Synonyms and Secondary IDs (12)
          Datasets (0)
          Study focus (0)
          Experimental Role
          Project
          Project Type
          Title
          Study result (0)
          Result
          Result Type
          Title
          External Crossreferences and Linkouts ( 41 )
          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.
          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
          KEGG Genes - Molecular building blocks of life in the genomic space.
          MARRVEL_MODEL - MARRVEL (model organism gene)
          Linkouts
          FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
          FlyCyc Genes - Genes from a BioCyc PGDB for Dmel
          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.
          References (44)