FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000097740
Interaction Network
Interactions Browser links
bam network
bgcn network
Reported Interactions
FBrf0208161-1.PD.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

GST tag

bgcn 

Bgcn

prey

V5 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 as a recombinant fusion protein in bacterial system; prey derived from transformed yeast cell extract.

FBrf0208161-2.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

GFP tag

bam 

Bam

prey

HA 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

Source was adult female ovaries of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

FBrf0208161-3.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

HA tag

bgcn 

Bgcn

prey

GFP 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

Source was adult female ovaries of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

FBrf0208161-4.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

HA tag

bam 
bgcn 

Bgcn

prey

Myc tag

bgcn 
bgcn 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
bam 
C-terminal region
sufficient binding region
aa 330-420
bgcn 
N-terminal region
sufficient binding region
aa 150-320
bgcn 
central region
sufficient binding region
aa 480-722
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

Two bam-interacting regions were identified in bgcn.

FBrf0208161-5.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

Myc tag

bam 

Bam

prey

HA 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

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

FBrf0208161-6.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

fused to LexA DNA-binding domain

bam 

Bam

prey

fused to B42 activation domain

bam 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
bam 
C-terminal region
sufficient binding region
aa 346-442
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 ovary cDNA expression library).

Two-hybrid system: yeast LexA-BD/B42 AD

FBrf0208488-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

BGCN

bait

fused to GAL4 DNA-binding domain

bam 

BAM

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/VP16-AD

FBrf0208488-4.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

BAM

bait

fused to GAL4 DNA-binding domain

bgcn 

BGCN

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/VP16-AD

FBrf0208488-5.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

BAM

bait

FLAG tag

bgcn 

BGCN

prey

Myc 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

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

The bam-bgcn interaction is RNA-independent and is not affected by coexpression of eIF-4a.

FBrf0208488-7.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

BGCN

bait

Myc tag

bam 

BAM

prey

FLAG 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

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

FBrf0209919-2.Y3H
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

fused to lexA DNA-binding domain

bgcn 

Bgcn

ancillary
bgcn 

Bgcn

ancillary
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).

Three-hybrid system: yeast lexA-BD/B42-AD, bgcn was coexpressed as a bridging factor in a yeast three-hybrid assay with bam as bait and pum as prey.

FBrf0209919-5.BiFC.FM
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

mKG tag, N-terminal fragment

bgcn 

Bgcn

ancillary
bgcn 

Bgcn

ancillary
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 live HEK293 cells; proteins produced from transfected constructs.

bgcn was coexpressed as a bridging factor in a fluorescence complementation assay with bam as bait and pum as prey.

FBrf0209919-8.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

FLAG tag

bgcn 

Bgcn

prey

Myc 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

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

FBrf0219873-1.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

GFP tag

bam 

Bam

prey

HA 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

Source was adult male testis of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

FBrf0221101-10.CH.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

neutral component

GFP tag

bgcn 

Bgcn

neutral component

GFP tag

bgcn 

Bgcn

neutral component

GFP tag

bam 

Bam

neutral component

HA tag

bam 

Bam

neutral component

HA tag

bam 

Bam

neutral component

HA 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

mei-P26, GFP-bgcn, Sxl and HA-bam cofractionate over a range of Superdex G-200 gel filtration fractions.

Source was adult female ovaries of transgenic fly line; proteins produced from tagged transgenic constructs.

FBrf0221101-3.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

fused to LexA DNA-binding domain

bgcn 

Bgcn

prey

fused to B42 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

Two-hybrid system: yeast LexA-BD/B42-AD

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

FBrf0226469-10.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

fused to GAL4 DNA-binding domain

bam 
bgcn 

Bgcn

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
bam 
central region
sufficient binding region
aa 151-350
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Two-hybrid system: yeast GAL4-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).

In yeast two hybrid assays, the CSN4-bam interaction is stronger than the bgcn-bam interaction.

FBrf0226469-4.coIP.WB
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

FLAG tag

bam 
bgcn 

Bgcn

prey

Myc tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
bam 
central region
sufficient binding region
aa 151-350
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

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

CSN4 competes with bgcn for binding to bam in this assay.

FBrf0226802-11.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

FLAG tag, Myc tag

bam 

Bam

prey

FLAG 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

Myc-tagged bgcn immunoprecipitated from TAP-tut complexes purified from cells expressing tagged tut, bgcn and bam.

Sequential TAP-tut and Myc-bgcn purifications indicate that tut, bgcn and bam co-exist in the same complex. Given that direct tut-bgcn interactions are not observed in yeast two hybrid assays, bam must bridge tut and bgcn. This complex is not RNA-dependent (resistant to RNaseA treatment).

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

FBrf0226802-14.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

fused to DNA-binding domain

bgcn 

Bgcn

prey

fused to 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

Two-hybrid system: yeast

Pairwise yeast two-hybrid interactions between tut-bam and bgcn-bam, but not tut-bgcn.

Source was yeast cell line; bait produced as transgenic fusion protein; prey produced as transgenic fusion protein (prey was previously cloned reagent).

FBrf0226802-7.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

bgcn

bait

GFP tag

bam 

bam

prey

HA 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

Positive control.

Source was adult male testis of transgenic fly line; bait produced from tagged transgenic construct; prey produced from tagged transgenic construct.

FBrf0229355-1.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bgcn 

Bgcn

bait

MYC tag

bam 

Bam

prey

HA 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

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

FBrf0229355-2.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

HA tag

bgcn 

Bgcn

prey

MYC 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

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

FBrf0234954-14.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
bam 

Bam

bait

TAP tag

bgcn 

Bgcn

prey

FLAG 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

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

External Crossreferences and Linkouts ( 1 )
Linkouts
MIST - An integrated Molecular Interaction Database
References (9)