FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000101849
Interaction Network
Interactions Browser links
brat network
mira network
Reported Interactions
FBrf0190211-1.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
brat 

Brat

bait

fused to GAL4 DNA-binding domain

brat 
brat 
brat 
mira 

Mira

prey

fused to GAL4 activation domain

mira 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
mira 
central region
sufficient binding region
aa 344-579

coordinates relative to mira-PA

brat 
NHL domain
sufficient binding region
aa 723-1037

coordinates relative to brat-PA

brat 
NHL domain residue G774
mutation disrupting interaction
aa 774

G774A, coordinates relative to brat-PA

brat 
NHL domain residue Y829
mutation disrupting interaction
aa 829

Y829A, coordinates relative to brat-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 embryo cDNA expression library).

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

FBrf0223614-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
brat 

Brat

bait

fused to LexA DNA-binding domain

brat 
mira 

Mira

prey

fused to GAL4 activation domain

mira 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
mira 
interaction domain
sufficient binding region
aa 369-506aa 527-638
brat 
coiled coil domain
necessary binding region
aa 376-511
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Two-hybrid system: yeast LexA-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).

The brat coiled coil domain is necessary for binding to mira aa 369-508, but not to mira aa 527-638.

The brat NHL domain is likely to interact with mira aa 527-638.

brat B boxes are dispensable for binding to mira

FBrf0229741-5.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
mira 

Mira

bait

FLAG tag

mira 
mira 
brat 

Brat

prey

GFP tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
mira 
stau interaction region residue L529
mutation decreasing interaction
aa 529

L529E, coordinates relative to mira-PB

mira 
stau interaction region residue L557
mutation decreasing interaction
aa 557

L557E, coordinates relative to mira-PB

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

Source was cell extract of HEK293T cell line; bait produced from transfected construct; prey produced from transfected construct.

The addition of recombinant stau did not affect the mira-brat interaction.

FBrf0229741-6.PD.MW
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
brat 

Brat

bait

GST tag

brat 
mira 

Mira

prey

Trx tag

mira 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
brat 
NHL domain
sufficient binding region
aa 756-1037

coorinates relative to brat-PA

mira 
CBDL domain
sufficient binding region
aa 210-668

coorinates relative to mira-PB

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 as a recombinant fusion protein in bacterial system.

FBrf0242849-2.ITC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
mira 

Mira

bait
mira 
brat 

Brat

prey
brat 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
brat 
CC-NHL domain
sufficient binding region
aa 376-1037

coordinates relative to brat-PA

mira 
CBD domain
sufficient binding region
unspecified
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 as a recombinant fusion protein in bacterial system.

Kd = 10.4uM

FBrf0242849-3.CH.MW
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
mira 

Mira

neutral component
mira 

Mira

neutral component
mira 
mira 

Mira

neutral component
mira 
brat 

Brat

neutral component
brat 
brat 

Brat

neutral component
brat 

Brat

neutral component
brat 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
brat 
CC-NHL domain
sufficient binding region
aa 376-1037

coordinates relative to brat-PA

mira 
CBD domain
sufficient binding region
unspecified
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (4)