FB2025_05 , released December 11, 2025
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000095150
Interaction Network
Interactions Browser links
caly network
Asx network
Reported Interactions
FBrf0210760-1.coIP.MS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

bait

TAP tag

Asx 

Asx

prey
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 embryonic nuclear extract from transgenic line carrying TAP-tagged calypso construct.

FBrf0210760-2.recon.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Asx 

Asx

neutral component

HA tag

Asx 

Asx

neutral component

HA tag

Asx 
Asx 

Asx

neutral component

HA tag

Asx 
caly 

Calypso

neutral component

FLAG tag

caly 

Calypso

neutral component

FLAG tag

caly 

Calypso

neutral component

FLAG tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Asx 
region
unspecified role
aa 2-337
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Analysis of complexes reconstituted from recombinant proteins.

Source was recombinant proteins produced in Sf21 cells; cell lysates mixed in vitro.

FBrf0240201-1.XC
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 43-404
Asx 
interaction domain
sufficient binding region
aa 207-340
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Stoichiometry 2:2

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

FBrf0240201-2.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 43-404
Asx 
interaction domain
sufficient binding region
aa 207-340
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Stoichiometry 2:2 , a dimer of calypso-Asx heterodimers with dimerization occurring via the calypso coiled-coil domain. Mutation of the calypso coiled-coil results in a 1:1 calypso-Asx complex.

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

FBrf0240201-3.CS.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 43-404
Asx 
interaction domain
sufficient binding region
aa 207-340
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

FBrf0240201-4.CL.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 43-404
Asx 
interaction domain
sufficient binding region
aa 207-340
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Mutation of the calypso coiled-coil results in loss of the 2:2 calypso-Asx complex but not the 1:1 calypso-Asx complex.

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

FBrf0240201-5.SAXS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 43-404
Asx 
interaction domain
sufficient binding region
aa 207-340
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Stoichiometry 2:2

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

FBrf0241751-1.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 
caly 

Calypso

neutral component
caly 
Asx 

ASX

neutral component
Asx 
Asx 

ASX

neutral component
Asx 

ASX

neutral component
Asx 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
caly 
interaction domain
sufficient binding region
aa 44-306,334-404
Asx 
deubiquitinase adaptor domain
sufficient binding region
aa 207-337
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Interaction in vitro; proteins produced as recombinant fusion proteins in bacterial system.

FBrf0254635-3.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

bait
Asx 

Asx

prey
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; bait produced from endogenous gene; prey produced from endogenous gene.

FBrf0254635-9.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
caly 

Calypso

neutral component
caly 

Calypso

neutral component
caly 

Calypso

neutral component
Asx 

Asx

neutral component
Asx 

Asx

neutral component
Asx 

Asx

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

Size exclusion chromatography demonstrated an interaction between sba, caly and Asx.

Source was nuclear cell extract of S2 cell line; proteins produced from endogenous genes.

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (4)