FB2024_03 , released June 25, 2024
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000116103
Interaction Network
Interactions Browser links
Su(var)205 network
HP4 network
esyN Network Diagram
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Protein
RNA
Selected Interactor(s)
Common Interactor(s)
Reported Interactions
FBrf0203015-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
HP4 

Hip

bait

fused to GAL4 DNA-binding domain, isoform HP4-PA

HP1

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

FBrf0203015-2.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
HP4 

Hip

bait

GST tag

HP4 
HP4 

HP1

prey

His tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
chromo shadow domain
sufficient binding region
aa 137-206
HP4 
interaction domain
sufficient binding region
aa 1-39aa 17-53aa 54-106

coordinates relative to HP4-PA

coordinates relative to HP4-PA

coordinates relative to HP4-PA

HP4 
interaction domain
necessary binding region
aa 1-16aa 40-53aa 54-66

coordinates relative to HP4-PA

coordinates relative to HP4-PA

coordinates relative to HP4-PA

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.

FBrf0203015-3.PD.WB
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note
HP4 

Hip

bait

GST tag

HP1

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

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey derived from wild-type salivary gland nuclear extract.

FBrf0203015-4.coIP.WB
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note
HP4 

Hip

bait

HP1

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 larval salivary gland nuclei of wild-type fly line; bait produced from endogenous gene; prey produced from endogenous gene.

FBrf0208607-1.PBD.FM
Description
physical association
Collection
Cell line used
Participants
Corresponds to
Reported as
Role
Note

HP1

bait

fused to lacI DNA binding domain

HP4 

Hip

prey
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
CSD domain
sufficient binding region
aa 131-206

coordinates relative to Su(var)205-PA

CSD domain residue 191
mutation disrupting interaction
aa 191

I191E, coordinates relative to Su(var)205-PA

CSD domain residue 200
mutation disrupting interaction
aa 200

W200A, coordinates relative to Su(var)205-PA

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

Bait fusion protein bound to lac0 sites and was visualized on polytene chromosomes. The ability of this chimera to recruit prey protein to lac0 sites was taken as evidence of direct physical interaction.

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

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (2)