FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000107005
Interaction Network
Interactions Browser links
del network
rhi network
Reported Interactions
FBrf0225218-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

bait

fused to GAL4 DNA-binding domain

del 

Del

prey

fused to GAL4 activation domain

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

Two-hybrid system: yeast GAL4-BD/GAL4-AD

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

FBrf0225218-4.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
del 

Del

bait

fused to GAL4 DNA-binding domain

del 
rhi 

Rhi

prey

fused to GAL4 activation domain

rhi 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
del 
N-terminal region
sufficient binding region
aa 1-660

coordinates relative to del-PA

rhi 
C-terminal region
sufficient binding region
aa 301-418

coordinates relative to rhi-PA

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

Two-hybrid system: yeast GAL4-BD/GAL4-AD

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

FBrf0236911-1.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

bait

GFP tag

del 

Del

prey

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

FBrf0236911-2.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
del 

Del

bait

mRFP tag

rhi 

Rhi

prey

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

FBrf0239363-1.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

bait

fused to lexA DNA-binding domain

rhi 
rhi 
rhi 
rhi 
rhi 
rhi 
rhi 
del 

Del

prey

fused to GAL4 activation domain

del 
del 
del 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
rhi 
chromoshadow domain
sufficient binding region
aa 353-418
rhi 
chromoshadow domain
necessary binding region
aa 353-418
rhi 
chromoshadow domain residues 371,378,380
mutation disrupting interaction
aa 371,378,380

Y371T,F378S,F380S

rhi 
chromoshadow domain residues 369,371,373
mutation disrupting interaction
aa 369,371,373

H369G,Y371T,M373S

rhi 
chromoshadow domain residues 412-416
mutation disrupting interaction
aa 412-416

LRIIV to AAAAA

rhi 
chromoshadow domain residues 374-376
mutation disrupting interaction
aa 374-376

NDD to KE

rhi 
chromoshadow domain residues 393-396
mutation disrupting interaction
aa 393-396

HIND to PMKY

del 
N-terminal domain
sufficient binding region
aa 1-60
del 
N-terminal domain
necessary binding region
aa 1-49
del 
N-terminal domain residue 28
mutation decreasing interaction
aa 28

K28M

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

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

Two-hybrid system: yeast lexA-BD/GAL4-AD

FBrf0239363-2.CH.MW
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

neutral component

His tag

rhi 

Rhi

neutral component

His tag

rhi 
rhi 

Rhi

neutral component

His tag

rhi 
del 

Del

neutral component

GST tag

del 
del 

Del

neutral component

GST tag

del 

Del

neutral component

GST tag

del 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
rhi 
chromoshadow domain
sufficient binding region
aa 353-418
del 
N-terminal domain
sufficient binding region
aa 1-60
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

FBrf0239363-3.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

neutral component

His tag

rhi 

Rhi

neutral component

His tag

rhi 
rhi 

Rhi

neutral component

His tag

rhi 
del 

Del

neutral component

GST tag

del 
del 

Del

neutral component

GST tag

del 

Del

neutral component

GST tag

del 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
rhi 
chromoshadow domain
sufficient binding region
aa 353-418
del 
N-terminal domain
sufficient binding region
aa 1-60
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

Two molecules of the del N-terminal domain bind a rhi chromoshadow domain dimer.

FBrf0239363-4.SEC-MALS
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhi

neutral component

His tag

rhi 

Rhi

neutral component

His tag

rhi 
rhi 
rhi 

Rhi

neutral component

His tag

rhi 
rhi 
del 

Del

neutral component

GST tag

del 
del 
del 

Del

neutral component

GST tag

del 

Del

neutral component

GST tag

del 
del 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
rhi 
chromoshadow domain
sufficient binding region
aa 353-418
del 
N-terminal domain
sufficient binding region
aa 1-60
rhi 
chromoshadow domain residues 412-418
mutation decreasing interaction
aa 412-418

deletion of 7 aa

del 
N-terminal domain residues 47-60
mutation decreasing interaction
aa 47-60

deletion of 14 aa

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

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

FBrf0243126-13.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
del 

Deadlock

bait

fused to GAL4 DNA-binding domain

del 
rhi 

Rhino

prey

fused to GAL4 activation domain

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
del 
N-terminal domain
sufficient binding region
aa 1-660

coordinates relative to del-PA

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

Two-hybrid system: yeast GAL4-BD/GAL4-AD

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

FBrf0243126-6.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
del 

Deadlock

bait

fused to LexA DNA-binding domain

rhi 

Rhino

prey

fused to GAL4 activation domain

rhi 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
rhi 
interaction domain
sufficient binding region
aa 265-418

coordinates relative to rhi-PA

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

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey from ovary cDNA expression library).

Two-hybrid system: yeast LexA-BD/GAL4-AD

FBrf0254633-2.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhino

bait

fused to GAL4 DNA-binding domain

del 

Deadlock

prey

fused to GAL4 activation domain

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 yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey from embryo ovary expression library).

Two-hybrid system: yeast GAL4-BD/GAL4-AD

FBrf0254633-4.PL.MS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhino

bait

GFP tag

del 

Deadlock

prey

Biotin 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

Prey biotinylated by TurboID ligase fused to a GFP nanobody.

Source was ovary lysate of transgenic fly line; bait produced from tagged transgenic construct; prey produced from endogenous gene.

FBrf0263998-2.CL.FM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
rhi 

Rhino

bait

Ph-mCherry tag

del 

Deadlock

prey

mEGFP

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 live S2R+ cells; proteins produced from transfected constructs.

Bait was fused to a pleckstrin domain with a tag. It removed nuclear proteins to the cytoplasm. Interaction was detected as movement from nuclear proteins to the cytoplasm.

FBrf0263998-5.CL.FM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
del 

Deadlock

bait

MLS-mCherry tag

rhi 

Rhino

prey

mEGFP

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

Bait was fused to a mitochondial anchoring tag. Interaction was determined by colocalization.

Source was live S2R+ cells; proteins produced from transfected constructs.

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (6)