FB2024_03 , released June 25, 2024
Gene: Dmel\Orai
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General Information
Symbol
Dmel\Orai
Species
D. melanogaster
Name
Orai
Annotation Symbol
CG11430
Feature Type
FlyBase ID
FBgn0041585
Gene Model Status
Stock Availability
Gene Summary
olf186-F (olf186-F) encodes a plasma membrane localised protein that functions as a pore subunit of the store-operated calcium entry (SOCE) channel. [Date last reviewed: 2019-03-14] (FlyBase Gene Snapshot)
Also Known As

olf186-F, dOrai, ORAI1, CRACM1, l(2)k11505

Key Links
Genomic Location
Cytogenetic map
Sequence location
Recombination map
2-84
RefSeq locus
NT_033778 REGION:17843442..17860582
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 (3 terms)
Terms Based on Experimental Evidence (2 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from direct assay
inferred from mutant phenotype
Terms Based on Predictions or Assertions (2 terms)
CV Term
Evidence
References
inferred from sequence or structural similarity with UniProtKB:Q13586
Biological Process (4 terms)
Terms Based on Experimental Evidence (4 terms)
CV Term
Evidence
References
inferred from direct assay
inferred from mutant phenotype
inferred from direct assay
Terms Based on Predictions or Assertions (1 term)
CV Term
Evidence
References
inferred from biological aspect of ancestor with PANTHER:PTN001267146
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
is_active_in membrane
inferred from biological aspect of ancestor with PANTHER:PTN001267146
located_in plasma membrane
non-traceable author statement
Protein Family (UniProt)
Belongs to the Orai family. (Q9U6B8)
Summaries
Gene Snapshot
olf186-F (olf186-F) encodes a plasma membrane localised protein that functions as a pore subunit of the store-operated calcium entry (SOCE) channel. [Date last reviewed: 2019-03-14]
Gene Group (FlyBase)
CALCIUM RELEASE-ACTIVATED CALCIUM CHANNEL SUBUNITS -
Ca[2+] release-activated Ca[2+] (CRAC) channels function in store-operated Ca[2+] entry, a mechanism for Ca[2+] entry across the plasma membrane (PM) into the endoplasmic reticulum (ER)) Ca[2+] stores. CRAC channels are highly Ca[2+] selective and are composed of Orai pore-forming subunits and the stromal interaction molecule (Stim), a Ca[2+] sensor. When ER Ca[2+] stores are depleted, a conformational change in ER-membrane localized Stim brings it into contact with PM-localized Orai to form a complex, allowing the movement of Ca[2+] from the extracellular milieu directly into the ER lumen. (Adapted from FBrf0251360, FBrf0214207 and PMID:27130253.)
Protein Function (UniProtKB)
Pore-forming subunit of inward rectifying Ca(2+) release-activated Ca(2+) (CRAC) channels. Assembles in hexameric CRAC channels that mediate Ca(2+) influx upon depletion of endoplasmic reticulum Ca(2+) store and channel activation by Ca(2+) sensor Stim, a process known as store-operated Ca(2+) entry (SOCE). Regulates transcription factor NFAT nuclear import.
(UniProt, Q9U6B8)
Summary (Interactive Fly)

store-operated Ca2+ channel involved in rhythmic firing of the flight motoneurons - physically interacts with the Ca2+ store sensor Stim (Stromal interaction molecule) to form the Ca2+ release-activated Ca2+ (CRAC) channel

Gene Model and Products
Number of Transcripts
5
Number of Unique Polypeptides
2

Please see the JBrowse view of Dmel\Orai 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 Q9U6B8)

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
PDB - An information portal to biological macromolecular structures
Comments on Gene Model

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

Annotated transcripts do not represent all possible combinations of alternative exons and/or alternative promoters.

Gene model reviewed during 5.48

Sequence Ontology: Class of Gene
Transcript Data
Annotated Transcripts
Name
FlyBase ID
RefSeq ID
Length (nt)
Assoc. CDS (aa)
FBtr0086797
2080
351
FBtr0086795
2632
351
FBtr0114614
3581
507
FBtr0336698
2407
351
FBtr0336699
4582
507
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
FBpp0085976
38.5
351
7.83
FBpp0085974
38.5
351
7.83
FBpp0113106
55.7
507
7.63
FBpp0307679
38.5
351
7.83
FBpp0307680
55.7
507
7.63
Polypeptides with Identical Sequences

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

351 aa isoforms: Orai-PA, Orai-PB, Orai-PF
507 aa isoforms: Orai-PE, Orai-PG
Additional Polypeptide Data and Comments
Reported size (kDa)
Comments
External Data
Subunit Structure (UniProtKB)

Hexamer.

(UniProt, Q9U6B8)
Crossreferences
InterPro - A database of protein families, domains and functional sites
PDB - An information portal to biological macromolecular structures
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\Orai 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).

-0.37

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

Comment: maternally deposited

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

Orai-transcripts A and B are both detected in adult heads via RT-PCR.

Marker for
 
Subcellular Localization
CV Term
Polypeptide Expression
mass spectroscopy
Stage
Tissue/Position (including subcellular localization)
Reference
western blot
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\Orai 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 ( 29 )
For All Classical and Insertion Alleles Show
 
Other relevant insertions
Transgenic Constructs ( 11 )
For All Alleles Carried on Transgenic Constructs Show
Transgenic constructs containing/affecting coding region of Orai
Transgenic constructs containing regulatory region of Orai
Aberrations (Deficiencies and Duplications) ( 4 )
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) (3)
11 of 14
Yes
Yes
10 of 14
No
Yes
7 of 14
No
Yes
2  
Model Organism Orthologs (via DIOPT v9.1)
Species\Gene Symbol
Score
Best Score
Best Reverse Score
Alignment
Complementation?
Transgene?
Rattus norvegicus (Norway rat) (3)
11 of 14
Yes
Yes
10 of 14
No
Yes
8 of 14
No
Yes
Mus musculus (laboratory mouse) (3)
11 of 14
Yes
Yes
10 of 14
No
Yes
10 of 14
No
Yes
Xenopus tropicalis (Western clawed frog) (4)
8 of 13
Yes
Yes
7 of 13
No
Yes
1 of 13
No
Yes
1 of 13
No
No
Danio rerio (Zebrafish) (3)
11 of 14
Yes
Yes
11 of 14
Yes
Yes
9 of 14
No
Yes
Caenorhabditis elegans (Nematode, roundworm) (1)
10 of 14
Yes
Yes
Anopheles gambiae (African malaria mosquito) (1)
8 of 12
Yes
Yes
Arabidopsis thaliana (thale-cress) (0)
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:Orai. 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 ( 2 )
Potential Models Based on Orthology ( 2 )
Modifiers Based on Experimental Evidence ( 2 )
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.
Interactions
Summary of Physical Interactions
esyN Network Diagram
Show neighbor-neighbor interactions:
Show/hide secondary interactors 
(data from AllianceMine provided by esyN)
Select Layout:
Legend:
Protein
RNA
Selected Interactor(s)
Other Interaction Browsers

Please see the Physical Interaction reports below for full details
protein-protein
Physical Interaction
Assay
References
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
Subunit Structure (UniProtKB)
Hexamer.
(UniProt, Q9U6B8 )
Linkouts
BioGRID - A database of protein and genetic interactions.
DroID - A comprehensive database of gene and protein interactions.
MIST (protein-protein) - An integrated Molecular Interaction Database
Pathways
Signaling Pathways (FlyBase)
Metabolic Pathways
External Data
Linkouts
Genomic Location and Detailed Mapping Data
Chromosome (arm)
2R
Recombination map
2-84
Cytogenetic map
Sequence location
FlyBase Computed Cytological Location
Cytogenetic map
Evidence for location
54F1-54F3
Limits computationally determined from genome sequence between P{PZ}grh06850&P{lacW}olf186-Fk11505 and P{PZ}Hsf03091&P{EP}Dgp-1EP731
Experimentally Determined Cytological Location
Cytogenetic map
Notes
References
54F1-54F2
(determined by in situ hybridisation)
Experimentally Determined Recombination Data
Location
Left of (cM)
Right of (cM)
Notes
Stocks and Reagents
Stocks (24)
Genomic Clones (22)
cDNA Clones (46)
 

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
 

monoclonal

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

      S2R+ cells treated with dsRNA made from templates generated with primers against this gene show complete inhibition of thapsigargin-induced Ca2+ influx, but there is no effect on the filling state of Ca2+ stores.

      Treatment of S2 cells with dsRNA made from templates generated with primers directed against this gene inhibits both the early and sustained components of Ca2+ entry evoked by thapsigargin at the single-cell level. In the majority of treated cells, Ca2+ release-activated Ca2+ current is completely suppressed.

      Relationship to Other Genes
      Source for database merge of

      Source for merge of: olf186-F CG11430

      Source for merge of: olf186-F BcDNA:LD03241

      Source for merge of: olf186-F l(2)k11505

      Additional comments

      Source for merge of olf186-F BcDNA:LD03241 was a shared cDNA ( date:030728 ).

      Source for merge of olf186-F l(2)k11505 was sequence comparison ( date:050919 ).

      Nomenclature History
      Source for database identify of

      Source for identity of: Orai olf186-F

      Nomenclature comments
      Etymology

      The gene is named "Orai" - in Greek mythology, the Orai are keepers of the gates of heaven: Eunomia (Order or Harmony), Dike (Justice) and Eirene (Peace).

      Named 'Orai' because, in Greek mythology, the Orai are the keepers of the gates of heaven, and the Orai protein is an essential component of the store-operated Ca[2+] entry mechanism.

      Synonyms and Secondary IDs (17)
      Reported As
      Symbol Synonym
      BcDNA:LD03241
      Name Synonyms
      CRAC modulator 1
      lethal (2) k11505
      olf186-F
      Secondary FlyBase IDs
      • FBgn0021911
      • FBgn0034280
      • FBgn0064926
      Datasets (0)
      Study focus (0)
      Experimental Role
      Project
      Project Type
      Title
      Study result (0)
      Result
      Result Type
      Title
      External Crossreferences and Linkouts ( 85 )
      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
      UniProt/TrEMBL - Automatically annotated and unreviewed 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
      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)
      PDB - An information portal to biological macromolecular structures
      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
      Fly-FISH - A database of Drosophila embryo and larvae mRNA localization patterns
      Flygut - An atlas of the Drosophila adult midgut
      iBeetle-Base - RNAi phenotypes in the red flour beetle (Tribolium castaneum)
      Interactive Fly - A cyberspace guide to Drosophila development and metazoan evolution
      MIST (protein-protein) - An integrated Molecular Interaction Database
      References (127)