FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000094932
Interaction Network
Interactions Browser links
Cdc42 network
WASp network
Reported Interactions
FBrf0205746-9.ENZ
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
WASp 

Wsp

ancillary

His tag

WASp 

Wsp

ancillary

His tag

WASp 

Wsp

ancillary

His tag

Cdc42

ancillary

His tag

Cdc42

ancillary

His tag

Cdc42

ancillary

His tag

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

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

Bovine Arp2/3 complex was mixed with pyrene labeled actin, to which WASp, nwk and Cdc42 were added in various combinations. Actin polymerization was monitored by fluorescence.

FBrf0208460-2.PD.A
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Cdc42

bait

GST tag

WASp 

Wasp

prey

[35]S label

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

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey produced and labeled by in vitro translation.

Positive control.

FBrf0209286-15.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Cdc42

bait

GST tag

WASp 

WASP

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

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey derived from S2R+ cell extract.

FBrf0211075-4.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
WASp 

Wsp

bait

GST tag

WASp 

Cdc42V12

prey

HA tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
WASp 
PRD
unspecified role
aa 301-378
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Bait expressed and purified from bacteria.

Prey expressed in transiently transfected HEK293T cells.

The interaction of WASp with the constitutively active Cdc42 V12 mutant is dependent upon the presence of wildtype Cip4 protein; the W603K Cip mutation, which disrupts the Cip SH3 domain, abolishes WASp-Cdc42 pull down.

GST pull down.

FBrf0227279-1.FRET.FM
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Cdc42

fluorescence donor

mEGFP tag

Cdc42

fluorescence donor

mEGFP tag

Cdc42

fluorescence donor

mEGFP tag

WASp 

WASp

fluorescence acceptor

mCherry tag

WASp 

WASp

fluorescence acceptor

mCherry tag

WASp 

WASp

fluorescence acceptor

mCherry tag

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 embryos of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

FBrf0227279-2.FRET.FM
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note
WASp 

WASp

fluorescence donor

mEGFP tag

WASp 

WASp

fluorescence donor

mEGFP tag

WASp 

WASp

fluorescence donor

mEGFP tag

Cdc42

fluorescence acceptor

mCherry tag

Cdc42

fluorescence acceptor

mCherry tag

Cdc42

fluorescence acceptor

mCherry tag

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 embryos of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (5)