FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000098776
Interaction Network
Interactions Browser links
loqs network
r2d2 network
Reported Interactions
FBrf0210024-8.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
loqs 

Loqs

bait

Myc tag

loqs 
r2d2 

R2D2

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.

FBrf0257352-11.CL.EM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
loqs 

Loqs-PD

neutral component
loqs 

Loqs-PD

neutral component
loqs 

Loqs-PD

neutral component
r2d2 
r2d2 

R2D2

neutral component
r2d2 

R2D2

neutral component
r2d2 
r2d2 

R2D2

neutral component
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
r2d2 
bridge helix
mutation decreasing interaction
aa 188-209

coordinates relative to r2d2-PA

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

Ternary complex consisting of Dcr-2, loqs and r2d2 curated as a series of binary protein-protein interactions.

Interaction in vitro; r2d2 produced as a recombinant fusion protein in a baculovirus and insect cell system; loqs produced as a recombinant fusion protein in a bacterial system.

FBrf0257352-14.CL.CH
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
loqs 

Loqs-PD

neutral component
loqs 

Loqs-PD

neutral component
loqs 

Loqs-PD

neutral component
r2d2 
r2d2 

R2D2

neutral component
r2d2 

R2D2

neutral component
r2d2 
r2d2 

R2D2

neutral component
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
r2d2 
bridge helix
mutation decreasing interaction
aa 188-209

coordinates relative to r2d2-PA

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

Interaction in vitro; r2d2 produced as a recombinant fusion protein in a baculovirus and insect cell system; loqs produced as a recombinant fusion protein in a bacterial system.

Higher order complexes consisting of multiple Dcr-2 and r2d2 proteins, in addition to loqs bound to siRNA, curated as a series of binary protein-protein interactions.

FBrf0257352-3.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
loqs 

Loqs-PD

neutral component

His tag

loqs 

Loqs-PD

neutral component

His tag

loqs 

Loqs-PD

neutral component

His tag

r2d2 

R2D2

neutral component
r2d2 

R2D2

neutral component
r2d2 

R2D2

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

Interaction in vitro; r2d2 produced as a recombinant fusion protein in a baculovirus and insect cell system; loqs produced as a recombinant fusion protein in a bacterial system.

Ternary complex consisting of Dcr-2, loqs and r2d2 curated as a series of binary protein-protein interactions.

FBrf0257352-6.EM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
loqs 

Loqs-PD

neutral component

His tag

loqs 

Loqs-PD

neutral component

His tag

loqs 

Loqs-PD

neutral component

His tag

r2d2 

R2D2

neutral component
r2d2 

R2D2

neutral component
r2d2 

R2D2

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

Higher order complexes consisting of multiple Dcr-2 and r2d2 proteins, in addition to loqs bound to dsRNA, curated as a series of binary protein-protein interactions.

Interaction in vitro; proteins produced as recombinant fusion proteins in a baculovirus and insect cell system.

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