FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
physical association
Interacting Genes
egl, mu2
FlyBase ID
FBig0000108647
Interaction Network
Interactions Browser links
egl network
mu2 network
Reported Interactions
FBrf0234579-35.coIP.SEQ
Reference
Vazquez-Pianzola et al., 2017
Description
physical association
Assay
Collection
Source/Stage
organism / embryonic stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
egl 

Egl

bait

GFP tag

mu2 

mu2

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 embryos of transgenic fly line; bait produced from tagged transgenic construct; prey produced from endogenous gene.

(Vazquez-Pianzola et al., 2017)
FBrf0234579-63a.coIP.PCR
Reference
Vazquez-Pianzola et al., 2017
Description
physical association
Assay
Collection
Source/Stage
organism / embryonic stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
egl 

Egl

bait

GFP tag

mu2 

mu2

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 embryos of transgenic fly line; bait produced from tagged transgenic construct; prey produced from endogenous gene.

(Vazquez-Pianzola et al., 2017)
FBrf0250118-8a.coIP.PCR
Reference
Neiswender et al., 2021
Description
physical association
Assay
Collection
Source/Stage
ovary / femaleadult stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
egl 

Egl

bait

FLAG tag

egl 
mu2 

mu2

prey
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
egl 
2pt interaction domain residues 965 and 969
mutation decreasing interaction
aa 965 and 969

S965K and S969R; coordinates relative to egl-PB

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

Interaction in vitro; bait produced by in vitro transcription; prey derived from transgenic adult female ovary extract.

(Neiswender et al., 2021)

Endogenous egl was depleted with shRNA. Introduction of a yeast leucine zipper to restore dimerization of egl 2pt mutant artificially, partially restores interaction with mu2.

(Neiswender et al., 2021)
FBrf0251875-4.coIP.PCR
Reference
Goldman et al., 2021
Description
physical association
Assay
Collection
Source/Stage
ovary / femaleadult stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
egl 

Egl

bait

FLAG tag

egl 
mu2 

mu2

prey
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
egl 
RNA binding domain residues 676-726
mutation decreasing interaction
nt 676-726

truncated RNA binding domain; coordinates relative to egl-PB

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

Source was adult ovaries; bait produced from tagged transgenic construct; prey produced from endogenous gene.

(Goldman et al., 2021)
External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (3)