General Information
Symbol
Dmel\Irk2
Species
D. melanogaster
Name
Inwardly rectifying potassium channel 2
Annotation Symbol
CG4370
Feature Type
FlyBase ID
FBgn0039081
Gene Model Status
Stock Availability
Gene Snapshot
Inwardly rectifying potassium channel 2 (Irk2) encodes a protein that is required in transepithelial fluid secretion and potassium transport in the Malpighian tubule. It contributes to wing patterning, through the regulation of release of the product of dpp. [Date last reviewed: 2018-11-08]
Genomic Location
Cytogenetic map
Sequence location
3R:23,513,617..23,519,445 [-]
Recombination map
3-80
Sequence
Other Genome Views
The following external sites may use different assemblies or annotations than FlyBase.
GO Summary Ribbons
Families, Domains and Molecular Function
Gene Group Membership (FlyBase)
Protein Family (UniProt, Sequence Similarities)
-
Molecular Function (see GO section for details)
Summaries
Gene Group Membership
INWARDLY RECTIFYING POTASSIUM CHANNEL SUBUNITS -
Inwardly rectifying potassium (IRK) channels are tetrameric transmembrane channels specific for potassium that allow potassium ions to move more easily into rather than out of the cell. IRKs contain two transmembrane domains and one inward-rectifier-potassium-channel domain. (Adapted from PMID:20086079 and FBrf0219718).
Gene Model and Products
Number of Transcripts
4
Number of Unique Polypeptides
4

Please see the GBrowse view of Dmel\Irk2 or the JBrowse view of Dmel\Irk2 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
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)
FBtr0084425
1894
453
FBtr0084426
1600
437
FBtr0301859
1485
451
FBtr0339622
2248
454
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
FBpp0083817
51.8
453
7.08
FBpp0083818
50.2
437
6.57
FBpp0291073
51.7
451
7.28
FBpp0308685
51.9
454
7.08
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\Irk2 using the Feature Mapper tool.

External Data
Crossreferences
Eukaryotic Promoter Database - A collection of databases of experimentally validated promoters for selected model organisms.
Linkouts
Gene Ontology (7 terms)
Molecular Function (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000205946
(assigned by GO_Central )
Biological Process (5 terms)
Terms Based on Experimental Evidence (4 terms)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN000205946
(assigned by GO_Central )
Cellular Component (1 term)
Terms Based on Experimental Evidence (1 term)
CV Term
Evidence
References
Terms Based on Predictions or Assertions (0 terms)
Expression Data
Transcript Expression
in situ
Stage
Tissue/Position (including subcellular localization)
Reference
Additional Descriptive Data
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
Expression Deduced from Reporters
High-Throughput Expression Data
Associated Tools

GBrowse - Visual display of RNA-Seq signals

View Dmel\Irk2 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
BDGP expression data - Patterns of gene expression in Drosophila embryogenesis
FLIGHT - Cell culture data for RNAi and other high-throughput technologies
FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
Flygut - An atlas of the Drosophila adult midgut
Images
FlyExpress - Embryonic expression images (BDGP data)
  • Stages(s) 13-16
Alleles, Insertions, Transgenic Constructs and Phenotypes
Classical and Insertion Alleles ( 1 )
For All Classical and Insertion Alleles Show
 
Allele of Irk2
Class
Mutagen
Associated Insertion
Stocks
Known lesion
Other relevant insertions
Transgenic Constructs ( 8 )
Deletions and Duplications ( 2 )
Summary of Phenotypes
For more details about a specific phenotype click on the relevant allele symbol.
Lethality
Allele
Other Phenotypes
Allele
Phenotype manifest in
Allele
Orthologs
Human Orthologs (via DIOPT v7.1)
Homo sapiens (Human) (16)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
10 of 15
Yes
Yes
 
10 of 15
Yes
Yes
10 of 15
Yes
Yes
9 of 15
No
Yes
9 of 15
No
Yes
9 of 15
No
Yes
7 of 15
No
Yes
7 of 15
No
Yes
7 of 15
No
Yes
6 of 15
No
No
5 of 15
No
Yes
5 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
3 of 15
No
Yes
Model Organism Orthologs (via DIOPT v7.1)
Mus musculus (laboratory mouse) (15)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
11 of 15
Yes
Yes
10 of 15
No
Yes
9 of 15
No
Yes
8 of 15
No
No
8 of 15
No
Yes
8 of 15
No
Yes
7 of 15
No
Yes
6 of 15
No
No
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
3 of 15
No
No
Rattus norvegicus (Norway rat) (15)
11 of 13
Yes
Yes
10 of 13
No
Yes
9 of 13
No
Yes
9 of 13
No
Yes
8 of 13
No
Yes
7 of 13
No
Yes
7 of 13
No
Yes
6 of 13
No
Yes
6 of 13
No
Yes
5 of 13
No
Yes
5 of 13
No
Yes
4 of 13
No
Yes
3 of 13
No
Yes
3 of 13
No
Yes
2 of 13
No
Yes
Xenopus tropicalis (Western clawed frog) (16)
9 of 12
Yes
Yes
8 of 12
No
Yes
8 of 12
No
Yes
7 of 12
No
Yes
5 of 12
No
Yes
5 of 12
No
Yes
4 of 12
No
Yes
4 of 12
No
Yes
4 of 12
No
Yes
4 of 12
No
Yes
3 of 12
No
Yes
3 of 12
No
Yes
1 of 12
No
Yes
1 of 12
No
Yes
1 of 12
No
Yes
1 of 12
No
Yes
Danio rerio (Zebrafish) (31)
9 of 15
Yes
Yes
9 of 15
Yes
Yes
9 of 15
Yes
Yes
9 of 15
Yes
Yes
9 of 15
Yes
Yes
8 of 15
No
Yes
8 of 15
No
Yes
8 of 15
No
Yes
7 of 15
No
Yes
7 of 15
No
Yes
7 of 15
No
Yes
7 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
5 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
4 of 15
No
Yes
3 of 15
No
Yes
3 of 15
No
Yes
3 of 15
No
Yes
1 of 15
No
Yes
1 of 15
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (3)
11 of 15
Yes
No
8 of 15
No
No
4 of 15
No
Yes
Arabidopsis thaliana (thale-cress) (0)
No orthologs reported.
Saccharomyces cerevisiae (Brewer's yeast) (0)
No orthologs reported.
Schizosaccharomyces pombe (Fission yeast) (0)
No orthologs reported.
Orthologs in Drosophila Species (via OrthoDB v9.1) ( EOG091904MC )
Organism
Common Name
Gene
AAA Syntenic Ortholog
Multiple Dmel Genes in this Orthologous Group
Drosophila melanogaster
fruit fly
Drosophila suzukii
Spotted wing Drosophila
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) ( EOG091502UH )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Musca domestica
House fly
Glossina morsitans
Tsetse fly
Lucilia cuprina
Australian sheep blowfly
Aedes aegypti
Yellow fever mosquito
Anopheles darlingi
American malaria mosquito
Anopheles darlingi
American malaria mosquito
Anopheles gambiae
Malaria mosquito
Anopheles gambiae
Malaria mosquito
Culex quinquefasciatus
Southern house mosquito
Orthologs in non-Dipteran Insects (via OrthoDB v9.1) ( EOG090W0887 )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Bombyx mori
Silkmoth
Bombyx mori
Silkmoth
Danaus plexippus
Monarch butterfly
Danaus plexippus
Monarch butterfly
Danaus plexippus
Monarch butterfly
Heliconius melpomene
Postman butterfly
Heliconius melpomene
Postman butterfly
Heliconius melpomene
Postman butterfly
Apis florea
Little honeybee
Apis florea
Little honeybee
Apis mellifera
Western honey bee
Apis mellifera
Western honey bee
Bombus impatiens
Common eastern bumble bee
Bombus impatiens
Common eastern bumble bee
Bombus impatiens
Common eastern bumble bee
Bombus terrestris
Buff-tailed bumblebee
Bombus terrestris
Buff-tailed bumblebee
Linepithema humile
Argentine ant
Linepithema humile
Argentine ant
Megachile rotundata
Alfalfa leafcutting bee
Megachile rotundata
Alfalfa leafcutting bee
Nasonia vitripennis
Parasitic wasp
Nasonia vitripennis
Parasitic wasp
Nasonia vitripennis
Parasitic wasp
Dendroctonus ponderosae
Mountain pine beetle
Dendroctonus ponderosae
Mountain pine beetle
Dendroctonus ponderosae
Mountain pine beetle
Dendroctonus ponderosae
Mountain pine beetle
Tribolium castaneum
Red flour beetle
Tribolium castaneum
Red flour beetle
Tribolium castaneum
Red flour beetle
Tribolium castaneum
Red flour beetle
Pediculus humanus
Human body louse
Rhodnius prolixus
Kissing bug
Rhodnius prolixus
Kissing bug
Rhodnius prolixus
Kissing bug
Cimex lectularius
Bed bug
Cimex lectularius
Bed bug
Acyrthosiphon pisum
Pea aphid
Acyrthosiphon pisum
Pea aphid
Zootermopsis nevadensis
Nevada dampwood termite
Zootermopsis nevadensis
Nevada dampwood termite
Zootermopsis nevadensis
Nevada dampwood termite
Orthologs in non-Insect Arthropods (via OrthoDB v9.1) ( EOG090X083T )
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
Stegodyphus mimosarum
African social velvet spider
Tetranychus urticae
Two-spotted spider mite
Tetranychus urticae
Two-spotted spider mite
Tetranychus urticae
Two-spotted spider mite
Daphnia pulex
Water flea
Daphnia pulex
Water flea
Orthologs in non-Arthropod Metazoa (via OrthoDB v9.1) ( EOG091G08HC )
Organism
Common Name
Gene
Multiple Dmel Genes in this Orthologous Group
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Strongylocentrotus purpuratus
Purple sea urchin
Ciona intestinalis
Vase tunicate
Ciona intestinalis
Vase tunicate
Ciona intestinalis
Vase tunicate
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Gallus gallus
Domestic chicken
Human Disease Model Data
FlyBase Human Disease Model Reports
    Alleles Reported to Model Human Disease (Disease Ontology)
    Download
    Models ( 0 )
    Allele
    Disease
    Evidence
    References
    Interactions ( 0 )
    Allele
    Disease
    Interaction
    References
    Comments ( 0 )
     
    Human Orthologs (via DIOPT v7.1)
    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
    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
    Show neighbor-neighbor interactions:
    Select Layout:
    Legend:
    Protein
    RNA
    Selected Interactor(s)
    Interactions Browser

    Please look at the Interaction Group reports for full details of the physical interactions
    protein-protein
    Interacting group
    Assay
    References
    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
    BioGRID - A database of protein and genetic interactions.
    DroID - A comprehensive database of gene and protein interactions.
    InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
    Pathways
    Gene Group - Pathway Membership (FlyBase)
    External Data
    Genomic Location and Detailed Mapping Data
    Chromosome (arm)
    3R
    Recombination map
    3-80
    Cytogenetic map
    Sequence location
    3R:23,513,617..23,519,445 [-]
    FlyBase Computed Cytological Location
    Cytogenetic map
    Evidence for location
    95A1-95A1
    Limits computationally determined from genome sequence between P{PZ}cnc03921 and P{PZ}l(3)0690606906
    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 (18)
    cDNA Clones (83)
     

    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 sequences
    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
    GenomeRNAi - A database for cell-based and in vivo RNAi phenotypes and reagents
    Antibody Information
    Laboratory Generated Antibodies
     
    Commercially Available Antibodies
     
    Other Information
    Relationship to Other Genes
    Source for database identify of
    Source for identity of: Irk2 CG4370
    Source for database merge of
    Source for merge of: CG4370 CG10180
    Additional comments
    Source for identity of Irk2 CG4370 was sequence comparison ( date:020109 ).
    Other Comments
    Origin and Etymology
    Discoverer
    Etymology
    Identification
    External Crossreferences and Linkouts ( 60 )
    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
    Linkouts
    BioGRID - A database of protein and genetic interactions.
    Drosophila Genomics Resource Center - Drosophila Genomics Resource Center cDNA clones
    DPiM - Drosophila Protein interaction map
    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.
    FLIGHT - Cell culture data for RNAi and other high-throughput technologies
    FlyAtlas - Adult expression by tissue, using Affymetrix Dros2 array
    Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
    Flygut - An atlas of the Drosophila adult midgut
    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)
    InterologFinder - Protein-protein interactions (PPI) from both known and predicted PPI data sets.
    KEGG Genes - Molecular building blocks of life in the genomic space.
    modMine - A data warehouse for the modENCODE project
    Synonyms and Secondary IDs (8)
    Datasets (0)
    Study focus (0)
    Experimental Role
    Project
    Project Type
    Title
    References (51)