FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000098201
Interaction Network
Interactions Browser links
elav network
ewg network
Reported Interactions
FBrf0188112-1.EMSA.A
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

ELAV

bait

GST tag

ewg 

ewg

prey

[32]P label

ewg 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ewg 
elav-py-binding site
sufficient binding region
unspecified

pA2-I binding site, diagrammed in Fig1E.

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

elav binds as a dodecamer to one ewg RNA. ewg length in combination with uridine repeats important for elav-ewg

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey produced and labeled by in vitro transcription.

FBrf0188112-3.CH.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

ELAV

neutral component

GST tag

elav 

ELAV

neutral component

GST tag

elav 

ELAV

neutral component

GST tag

ewg 
ewg 

ewg

neutral component

[32]P label

ewg 

ewg

neutral component

[32]P label

ewg 
ewg 

ewg

neutral component

[32]P label

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ewg 
elav-binding site
sufficient binding region
unspecified

ewg pA2-I binding site diagrammed in Fig1E

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

Dimer, trimer and tetramer sizes of elav bound to ewg were detected.

Interaction in vitro; protein produced as a recombinant fusion protein in bacterial system; prey produced and labeled by in vitro transcription.

FBrf0215270-1a.EMSA.A
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

elav

bait

GST tag

ewg 

ewg

prey

[32]P label

ewg 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ewg 
pA2-1 in intron 6
sufficient binding region
nt 269469-269638

genomic coordinates inferred from Fig2B

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 and labeled by in vitro transcription.

FBrf0215270-2.coIP.PCR
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

elav

bait
ewg 

ewg

prey
ewg 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ewg 
pA2-1 in intron 6
sufficient binding region
nt 269469-269638

genomic coordinates inferred from Fig2B

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

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

A shorter sufficient binding region as well as mutations that disrupt binding for ewg are shown but details for these constructs are unclear.

FBrf0219699-1.coIP.PCR
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

ELAV

bait
ewg 

ewg

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

RNA immunoprecipitated from formaldehyde fixed embryos.

elav protein binds transcripts with developmentally regulated 3\' UTR extensions.

Source was embryonic nuclear extract of wild-type fly line; bait produced from endogenous gene; prey produced from endogenous gene.

FBrf0224960-1a.XL.A
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ewg 

ewg

bait

[32]P label

elav 

ELAV

prey

GST 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 produced and labeled by in vitro transcription; prey produced as a recombinant fusion protein in bacterial system.

Radiolabeled RNA and purified protein were UV cross-linked, treated with RNaseA and protected, labeled RNA was visualized by gel electrophoresis and autoradiography.

Positive control.

FBrf0224960-3.EMSA.A
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
elav 

ELAV

bait

GST tag

ewg 

ewg

prey

[32]P label

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

Positive control.

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey produced and labeled by in vitro transcription.

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