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General Information
Symbol
Dmel\nbs
Species
D. melanogaster
Name
nbs
Annotation Symbol
CG6754
Feature Type
FlyBase ID
FBgn0261530
Gene Model Status
Stock Availability
Gene Summary
nbs (nbs) encodes a component of the conserved MRN complex, which plays an important role in the repair of DNA double strand breaks. The product of nbs is required to prevent chromosome breakage, interacts with the telomere capping complex and prevents telomeric fusions. [Date last reviewed: 2019-02-28] (FlyBase Gene Snapshot)
Also Known As

l(3)67BDp, NBS1, Nijmegen breakage syndrome, l(3)67BDr

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
3-31
RefSeq locus
NT_037436 REGION:9720414..9723194
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
Function
GO Summary Ribbons
Gene Ontology (GO) Annotations (10 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (0 terms)
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000255549
(assigned by GO_Central )
Biological Process (8 terms)
Terms Based on Experimental Evidence (6 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (3 terms)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000255549
(assigned by GO_Central )
inferred from biological aspect of ancestor with PANTHER:PTN000255549
(assigned by GO_Central )
inferred from biological aspect of ancestor with PANTHER:PTN000255549
(assigned by GO_Central )
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000255549
(assigned by GO_Central )
Gene Group (FlyBase)
Protein Family (UniProt)
-
Summaries
Gene Snapshot
nbs (nbs) encodes a component of the conserved MRN complex, which plays an important role in the repair of DNA double strand breaks. The product of nbs is required to prevent chromosome breakage, interacts with the telomere capping complex and prevents telomeric fusions. [Date last reviewed: 2019-02-28]
Summary (Interactive Fly)

encodes a multifunctional protein that plays critical roles in the response to DNA damage and telomere maintenance - part of a protein complex, MRN, that senses DNA strand breaks and amplifies the signal and then conveys it to downstream effectors, such as ATM and p53, that regulate cell cycle checkpoints and DNA repair

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

Please see the JBrowse view of Dmel\nbs 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
Comments on Gene Model

Mutation in sequenced strain; single base change at splice site. Alternative downstream splice donor may be used.

Gene model reviewed during 6.02

Gene model reviewed during 5.45

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

Gene model reviewed during 6.04

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0306039
2593
816
FBtr0306040
2599
818
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
RefSeq ID
GenBank
FBpp0297181
91.2
816
7.96
FBpp0297182
91.5
818
8.12
Polypeptides with Identical Sequences

None of the polypeptides share 100% sequence identity.

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\nbs 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
Expression Summary Ribbons
Colored tiles in ribbon indicate that expression data has been curated by FlyBase for that anatomical location. Colorless tiles indicate that there is no curated data for that location.
For complete stage-specific expression data, view the modENCODE Development RNA-Seq section under High-Throughput Expression below.
Transcript Expression
Additional Descriptive Data
Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
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

GBrowse - Visual display of RNA-Seq signals

View Dmel\nbs in GBrowse 2
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
Images
Alleles, Insertions, Transgenic Constructs, and Aberrations
Classical and Insertion Alleles ( 14 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 6 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of nbs
Transgenic constructs containing regulatory region of nbs
Aberrations (Deficiencies and Duplications) ( 3 )
Inferred from experimentation ( 3 )
Gene partially disrupted in
Inferred from location ( 0 )
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
chromosome
chromosome & neuroblast | third instar larval stage 2
eye (with nbs1)
eye (with nbs2)
Orthologs
Human Orthologs (via DIOPT v8.0)
Homo sapiens (Human) (1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
10 of 15
Yes
Yes
Model Organism Orthologs (via DIOPT v8.0)
Mus musculus (laboratory mouse) (1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
11 of 15
Yes
Yes
Rattus norvegicus (Norway rat) (1)
9 of 13
Yes
Yes
Xenopus tropicalis (Western clawed frog) (1)
6 of 12
Yes
Yes
Danio rerio (Zebrafish) (1)
9 of 15
Yes
Yes
Caenorhabditis elegans (Nematode, roundworm) (2)
1 of 15
Yes
No
1 of 15
Yes
No
Arabidopsis thaliana (thale-cress) (1)
3 of 9
Yes
Yes
Saccharomyces cerevisiae (Brewer's yeast) (0)
No records found.
Schizosaccharomyces pombe (Fission yeast) (1)
2 of 12
Yes
Yes
Ortholog(s) in Drosophila Species (via OrthoDB v9.1) ( EOG091902KB )
Organism
Common Name
Gene
AAA Syntenic Ortholog
Multiple Dmel Genes in this Orthologous Group
Drosophila suzukii
Spotted wing Drosophila
Drosophila simulans
Drosophila sechellia
Drosophila erecta
Drosophila yakuba
Drosophila ananassae
Drosophila pseudoobscura pseudoobscura
Drosophila persimilis
Drosophila willistoni
Drosophila virilis
Drosophila mojavensis
Drosophila grimshawi
Orthologs in non-Drosophila Dipterans (via OrthoDB v9.1) ( EOG091501RY )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Musca domestica
House fly
Glossina morsitans
Tsetse fly
Glossina morsitans
Tsetse fly
Lucilia cuprina
Australian sheep blowfly
Lucilia cuprina
Australian sheep blowfly
Mayetiola destructor
Hessian fly
Mayetiola destructor
Hessian fly
Aedes aegypti
Yellow fever mosquito
Anopheles darlingi
American malaria mosquito
Anopheles gambiae
Malaria mosquito
Culex quinquefasciatus
Southern house mosquito
Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( EOG090W0CX5 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Danaus plexippus
Monarch butterfly
Apis florea
Little honeybee
Apis mellifera
Western honey bee
Bombus impatiens
Common eastern bumble bee
Bombus terrestris
Buff-tailed bumblebee
Linepithema humile
Argentine ant
Linepithema humile
Argentine ant
Nasonia vitripennis
Parasitic wasp
Nasonia vitripennis
Parasitic wasp
Dendroctonus ponderosae
Mountain pine beetle
Tribolium castaneum
Red flour beetle
Pediculus humanus
Human body louse
Rhodnius prolixus
Kissing bug
Acyrthosiphon pisum
Pea aphid
Acyrthosiphon pisum
Pea aphid
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X07GN )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strigamia maritima
European centipede
Ixodes scapularis
Black-legged tick
Stegodyphus mimosarum
African social velvet spider
Daphnia pulex
Water flea
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( EOG091G0BJ4 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Ciona intestinalis
Vase tunicate
Gallus gallus
Domestic chicken
Paralogs
Paralogs (via DIOPT v8.0)
Drosophila melanogaster (Fruit fly) (0)
No records found.
Human Disease Associations
FlyBase Human Disease Model Reports
Disease Model Summary Ribbon
Disease Ontology (DO) Annotations
Models Based on Experimental Evidence ( 0 )
Allele
Disease
Evidence
References
Potential Models Based on Orthology ( 3 )
Human Ortholog
Disease
Evidence
References
Modifiers Based on Experimental Evidence ( 1 )
Allele
Disease
Interaction
References
Disease Associations of Human Orthologs (via DIOPT v8.0 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
esyN Network Diagram
esyN Network Key:
Suppression
Enhancement

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
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
FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
External Data
Genomic Location and Detailed Mapping Data
Chromosome (arm)
3L
Recombination map
3-31
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
67B1-67D13
Left limit from non-inclusion within Df(3L)29A6 (citation unavailable) Right limit from inclusion within Df(3L)AC1 (citation unavailable)
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
67C10-67D1
Experimentally Determined Recombination Data
Location

3-[28]

Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (10)
Genomic Clones (20)
cDNA Clones (81)
 

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 GBrowse 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
    GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
    Antibody Information
    Laboratory Generated Antibodies
     

    monoclonal

    polyclonal

    Commercially Available Antibodies
     
    Other Information
    Relationship to Other Genes
    Source for database identify of
    Source for database merge of

    Source for merge of: nbs CG6754

    Source for merge of: nbs l(3)67BDp

    Source for merge of: nbs l(3)67BDr

    Additional comments

    FlyBase curator comment: the insertion in the "c06100" Exelixis line (PBac{PB}deflc06100) was originally assigned to the nbs gene in FBrf0179797, resulting in the "nbsc06100" (FBal0158901) allele. However, FBrf0184340 shows that the insertion is actually within defl.

    Other Comments

    nbs is required to maintain chromosome integrity and to prevent telomere fusion. nbs mediates transport of the mre11/rad50 complex in the nucleus. nbs and the mre11/rad50 complex play partially independent roles in telomere protection and nbs appears to function in both mei-41- and tefu-controlled telomere protection pathways.

    nbs is essential for cell cycle arrest at high doses of X-irradiation.

    Identification: Defined on basis of DNA sequence similarity to NBS (Nijmegen Breakage Syndrome).

    Origin and Etymology
    Discoverer
    Etymology
    Identification
    External Crossreferences and Linkouts ( 49 )
    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/TrEMBL - Automatically annotated and unreviewed records of protein sequence and functional information
    Other crossreferences
    Drosophila Genomics Resource Center - Drosophila Genomics Resource Center (DGRC) cDNA clones
    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
    Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
    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
    FlyMet - A comprehensive tissue-specific metabolomics resource for Drosophila.
    FlyMine - An integrated database for Drosophila genomics
    GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
    iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
    KEGG Genes - Molecular building blocks of life in the genomic space.
    MARRVEL_MODEL - MARRVEL (model organism gene)
    modMine - A data warehouse for the modENCODE project
    SignaLink - A signaling pathway resource with multi-layered regulatory networks.
    Linkouts
    DroID - A comprehensive database of gene and protein interactions.
    DRSC - Results frm RNAi screens
    Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
    KEGG Pathways - Wiring diagrams of molecular interactions, reactions and relations.
    MIST (genetic) - An integrated Molecular Interaction Database
    MIST (protein-protein) - An integrated Molecular Interaction Database
    Synonyms and Secondary IDs (15)
    Reported As
    Name Synonyms
    Nijmegen breakage syndrome
    lethal (3) 67BDp
    lethal (3) 67BDr
    nbs
    Secondary FlyBase IDs
    • FBgn0002220
    • FBgn0086349
    • FBgn0026198
    • FBgn0002218
    • FBgn0036037
    Datasets (0)
    Study focus (0)
    Experimental Role
    Project
    Project Type
    Title
    References (81)