FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000097586
Interaction Network
Interactions Browser links
ihog network
Reported Interactions
FBrf0192598-1.CH
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ihog 

ihog

self
ihog 

ihog

self
ihog 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ihog 
fibronectin III domains 1 and 2
sufficient binding region
aa 466-679
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.

In the presence of heparin, ihog forms a dimer.

Native molecular weight was determined by size exclusion chromatography of purified protein.

FBrf0192598-3.CS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ihog 

ihog

self
ihog 

ihog

self
ihog 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ihog 
fibronectin III domains 1 and 2
sufficient binding region
aa 466-679
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.

In the presence of heparin, ihog forms a dimer.

Molecular weight of purified ihog estimated by analytical ultracentrifugation and calculation of sedimentation coefficient.

FBrf0243212-1.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ihog 

Ihog

bait

FLAG tag

ihog 

Ihog

prey

HA,YFP tag

ihog 
ihog 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ihog 
extracellular domain
sufficient binding region
aa 1-707
ihog 
Fn1 domain
necessary binding region
unspecified
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Coexpression of the N-terminal hh signaling domain reduces the ihog-ihog interaction.

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

FBrf0249017-1.BiFC.FM
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ihog 

Ihog

bait

GFP-11-CD4

ihog 

Ihog

prey

GFP tag-1-10-CD4

ihog 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ihog 
FnIII-2 domain
mutation increasing interaction
aa 581-666

coordinates relative to ihog-PA

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

Deletion of ihog FnIII-2 domain reveals ihog homophilic trans-binding.

Source was larval wing discs of transgenic fly line; proteins produced from transgenic constructs.

External Crossreferences and Linkouts ( 0 )
References (3)