FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000096883
Interaction Network
Interactions Browser links
Arfip network
Rac1 network
Reported Interactions
FBrf0220158-1.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Arfip

bait

FLAG tag

Rac1 

Rac1

prey

YFP tag

Rac1 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Rac1 
region
mutation decreasing interaction
aa 17

T17N

Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Source was cell extract of S2 cell line; bait produced from transfected construct; prey produced from transfected construct.

Arfip binds to GTP-bound Rac1, as inferred by its strong interaction with the Rac1 G12V mutant (mimics GTP-locked state) but only weak binding to the Rac1 T17N mutant (mimics the GDP-bound state).

FBrf0220158-4.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Arfip

bait

HA tag

Rac1 

Rac1

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 adult heads of transgenic fly line; bait produced from tagged transgenic construct; prey produced from endogenous gene.

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