FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000097450
Interaction Network
Interactions Browser links
mod(mdg4) network
Reported Interactions
FBrf0136690-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4) 2.2

bait

fused to GAL4 DNA-binding domain

Mod(mdg4) 2.2

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
BTB domain
sufficient binding region
BTB domain
necessary binding region
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 GAL4-BD/GAL4-AD

FBrf0192714-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

fused to GAL4 DNA-binding domain

Mod(mdg4)

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
BTB domain residue 33
mutation disrupting interaction
aa 33

D33N, Both participants were mutated. Coordinates relative to mod(mdg4)-PT

BTB domain residues 33 and 46
mutation decreasing interaction
aa 33,46

D33N, H46D. Both participants were mutated. Coordinates relative to mod(mdg4)-PT

BTB domain residue 46
mutation decreasing interaction
aa 46

H46D. Both participants were mutated. coordinates relative to mod(mdg4)-PT

BTB domain residues 33 and 47
mutation decreasing interaction
aa 33,47

D33N, R47Q, Both participants were mutated. Coordinates relative to mod(mdg4)-PT

BTB,Q-rich domain
sufficient binding region
aa 1-273

Coordinates relative to mod(mdg4)-PT

C-terminal domain
sufficient binding region
aa 317-610

Coordinates relative to mod(mdg4)-PT

dimerization domain
necessary binding region
aa 317-389

Coordinates relative to mod(mdg4)-PT

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 GAL4-BD/GAL4-AD. Authors fused GAL4 activation domain to either before or behind the protein and state that only the fusion with GAL4 AD fused behind the protein resulted in strong binding.

FBrf0192714-4.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

GST tag

Mod(mdg4)

prey

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; bait and prey produced as a recombinant fusion protein in bacterial system.

FBrf0192714-5.CM.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

self

Mod(mdg4)

self
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Q-rich, FLYWCH and acidic domains
sufficient binding region
aa 83-610

Coordinates relative to mod(mdg4)-PT

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.

FBrf0205475-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod

bait

fused to GAL4 DNA-binding domain

Mod

prey

fused to GAL4 DNA-binding 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 was previously cloned reagent).

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

FBrf0215054-10.CM.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

self

His tag

Mod(mdg4)

self

His tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BTB domain
sufficient binding region
aa 1-119
N-terminal domain
necessary binding region
aa 1-17
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

mod(mdg4) formed mainly high-order multimers.

FBrf0215054-15.CL.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

self

His tag

Mod(mdg4)

self

His tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BTB domain
sufficient binding region
aa 1-119
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

Crosslinked mod(mdg4) formed mainly high-order multimers.

FBrf0215054-25.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

fused to GAL4 DNA-binding domain

Mod(mdg4)

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
BTB domain
sufficient binding region
aa 1-119
N-terminal domain
necessary binding region
aa 1-18

An N-terminally deleted fragment of the BTB domain fails to interact with itself but will interact with the longer, intact BTB domain.

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 GAL4-BD/GAL4-AD

FBrf0215054-3.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

self

His tag

Mod(mdg4)

self

His tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BTB domain
sufficient binding region
aa 1-119
N-terminal domain
necessary binding region
aa 1-17
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

mod(mdg4) formed mainly high-order multimers.

FBrf0234617-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)67.2

bait

fused to GAL4 DNA-binding domain

Mod(mdg4)67.2

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 was previously cloned reagent).

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

FBrf0243085-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

fused to GAL4 DNA-binding domain

Mod(mdg4)

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
N-terminal domain
sufficient binding region
aa 1-389

coordinates relative to mod(mdg4)-PT

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 GAL4-BD/GAL4-AD. mod(mdg4) isoforms, PA, PB, PH, PJ, PR, PV, PY, PE, PL, PM, PC, interacted with mod(mdg4)-PT in this assay.

FBrf0243085-2.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

FLAG tag

Mod(mdg4)

prey

V5 tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
N-terminal domain
sufficient binding region
aa 1-389

coordinates relative to mod(mdg4)-PT

C-terminal domain
sufficient binding region
aa 389-610

coordinates relative to mod(mdg4)-PT

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

mod(mdg4) isoforms, PA, PB, PH, PJ, PR, PV, PY, PE, PL, PM, PC, interacted with mod(mdg4)-PT in this assay.

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

FBrf0255412-10.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MNM

bait

mCherry tag

MNM

prey

EGFP tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Common part
sufficient binding region
aa 241-417
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

T,P and C isoforms of mod(mdg4) interact with mod(mdg4) isoform E.

Source was cell extract of S2R+ cell line; bait produced from transfected construct; prey produced from transfected construct.

FBrf0255412-11.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MNM

bait

EGFP tag

MNM

prey

Myc 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 cell extract of S2R+ cell line; bait produced from transfected construct; prey produced from transfected construct.

FBrf0255412-12.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MNM

bait

EGFP tag

MNM

prey

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 cell extract of S2R+ cell line; bait produced from transfected construct; prey produced from transfected construct.

FBrf0255412-22.PD.CH.MALS.EM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

MNM

self

MBP tag

MNM

self

MBP tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
Common part
sufficient binding region
aa 241-417
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Interaction in vitro; proteins produced as recombinant fusion proteins in baculovirus system.

uno forms a tetramer and dimer.

FBrf0257791-15.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

Mod(mdg4)

bait

fused to GAL4 DNA-binding domain

Mod(mdg4)

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 was previously cloned reagent).

Two-hybrid system: yeast GAL4-BD/GAL4-AD; positive control

FBrf0260563-118.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

mod(mdg4

self

His tag

mod(mdg4

self

His tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
TTK-type BTB domain hydrophobic residues 71 and 73
mutation decreasing interaction
aa 71 and 73aa 71 and 73

I71A, F73A; within the context of aa 1-77

I71K, F73K; within the context of aa 1-77

TTK-type BTB domain hydrophobic residue 73
mutation decreasing interaction
aa 73aa 73

F73A; within the context of aa 1-77

F73P; within the context of aa 1-77

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

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

MW values were determined from column calibration with standard proteins in addition to staining. mod(mdg4) forms multimers. Mutations in hydrophobic residues to break H-bonds (proline), increase polarity (lysine) or traditional alanine, all decreased hexamer formation.

FBrf0260563-40.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note

mod(mdg4)

bait

fused to GAL4 DNA-binding domain

mod(mdg4)

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
TTK-type BTB domain hydrophobic residues 71 and 73
mutation decreasing interaction
aa 71 and 73

I71A, F73A; within the context of aa 1-77

TTK-type BTB domain hydrophobic residues 71 and 73
mutation disrupting interaction
aa 71 and 73

I71K, F73K; within the context of aa 1-77

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 GAL4-BD/GAL4-AD

External Crossreferences and Linkouts ( 0 )
References (9)