FB2026_01 , released March 12, 2026
FB2026_01 , released March 12, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000116170
Interaction Network
Interactions Browser links
cnk network
Dsor1 network
Reported Interactions
FBrf0224702-137.coIP.MS
Description
physical association
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Dsor1

bait

TAP tag

cnk 

cnk

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 transfected construct; prey produced from endogenous gene.

Overall SAINT probability of interaction = 0.99.

FBrf0260095-13.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MEK

neutral component

MEK

neutral component

MEK

neutral component
cnk 

CNK

neutral component

GST tag

cnk 
cnk 
cnk 
cnk 

CNK

neutral component

GST tag

cnk 

CNK

neutral component

GST tag

cnk 
cnk 
cnk 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
cnk 
PDZ-CRIC linker domain residue 197
mutation decreasing interaction
aa 197

within the context of aa 2-330; M197E; coordinates relative to cnk-PA

cnk 
PDZ-CRIC linker domain residue 195
mutation decreasing interaction
aa 195

within the context of aa 2-330; D195K; coordinates relative to cnk-PA

cnk 
PDZ-CRIC linker domain residue 198
mutation decreasing interaction
aa 198

within the context of aa 2-330; V198E; coordinates relative to cnk-PA

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

Purified ave-cnk heterodimer was mixed with an equimolar ratio of ksr-Dsor1 heterodimer, which eluted as a higher order complex captured as series of binary interactions that do not necessarily indicate direct protein-protein contact. Mutations in cnk or ksr interfere with the higher order cnk-ave-ksr-Dsor1 complex.

Interaction in vitro; Dsor1 produced as a recombinant fusion protein in baculovirus and insect cell system; cnk produced as a recombinant fusion protein in bacterial cell system.

FBrf0260095-21.EM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MEK

neutral component

MEK

neutral component

MEK

neutral component
cnk 

CNK

neutral component

GST tag

cnk 
cnk 

CNK

neutral component

GST tag

cnk 

CNK

neutral component

GST tag

cnk 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
cnk 
SAM-CRIC-PDZ domains
sufficient binding region
aa 2-330

coordinates relative to cnk-PA

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

cryoEM structure of ave-cnk-ksr-Dsor1 complex captured as a series of binary interactions that are not all direct. cryoEM indicates direct interaction between ave-cnk, ksr-Dsor1, cnk-ksr and cnk-Dsor1.

Interaction in vitro; Dsor1 produced as a recombinant fusion protein in a baculovirus and insect system; cnk produced as a recombinant protein in bacterial system.

FBrf0260095-3.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
cnk 

CNK

bait

GST tag

cnk 

MEK

prey

V5 tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
cnk 
interaction domain
sufficient binding region
aa 2-549

coordinates relative to cnk-PA

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

Co-expression of ave and ksr increase cnk-Dsor1 interaction with cnk aa 2-549 and 2-384 constructs, but not aa 2-209 which lacks the PDZ domain.

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

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (2)