FB2026_03 , released September 17, 2026
Physical Interaction report
Open Close
General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000108441
Interaction Network
Interactions Browser links
Orai network
Reported Interactions
FBrf0215714-1.XL.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

Orai

self
Orai 

Orai

self
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Source was cell extract of S2 cell line; protein derived from endogenous gene.

olf186-F is present primarily as homodimers in resting S2 cells.

FBrf0215714-2.CS.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

Orai

self
Orai 

Orai

self
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Source was cell extract of S2 cell line; protein derived from endogenous gene.

olf186-F is present primarily as homodimers in resting S2 cells.

FBrf0220161-1.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

Orai

self
Orai 

Orai

self
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

olf186-F subunits assemble into a hexameric calcium channel.

Interaction in vitro; protein produced as a recombinant fusion protein in bacterial system.

FBrf0240279-1.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

Orai

neutral component
Orai 

Orai

neutral component
Orai 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Orai 
interaction domain
sufficient binding region
aa 133-341
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Crystal structure of H206A mutant form of olf186-F in open conformation. Hexameric.

Interaction in vitro; protein produced as recombinant fusion protein in a yeast system.

FBrf0242242-1.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

dOrai

neutral component
Orai 

dOrai

neutral component
Orai 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Orai 
interaction domain
sufficient binding region
aa 132-341
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Interaction in vitro; protein produced as a recombinant fusion protein in baculoviral system.

The fragment of olf186-F used contains C224S, C283T mutations to increase protein stability and the channel activating mutation P288L. Structure is hexameric.

FBrf0242242-2.EM
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

dOrai

neutral component
Orai 

dOrai

neutral component
Orai 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Orai 
interaction domain
sufficient binding region
aa 132-341
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Interaction in vitro; protein produced as a recombinant fusion protein in baculoviral system.

The fragment of olf186-F used contains C224S, C283T mutations to increase protein stability and the channel activating mutation P288L. Structure is hexameric.

FBrf0247492-1.EM
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Orai 

Orai

neutral component
Orai 

Orai

neutral component
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

3D reconstruction of mutant, constitutively open, Orai channel in complex with a monoclonal antibody to increase complex size and structural resolution. Each channel consists of 6 Orai subunits.

Interaction in vitro; protein produced as a recombinant fusion protein in bacterial system.

External Crossreferences and Linkouts ( 0 )
References (5)