FB2025_01 , released February 20, 2025
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000098774
Interaction Network
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BicD network
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Protein
RNA
Selected Interactor(s)
Common Interactor(s)
Reported Interactions
FBrf0109097-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

Bic-D

bait

fused to GAL4 DNA-binding domain

BicD 

Bic-D

prey

fused to GAL4 activation domain

BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
C-terminal region
sufficient binding region
aa 354-738
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

FBrf0208220-5.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

bait

fused to GAL4 DNA-binding domain

BicD 

BicD

prey

fused to GAL4 activation domain

BicD 
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
C-terminal domain
sufficient binding region
aa 536-782aa 608-782

bait

prey

BicD 
central region
sufficient binding region
aa 536-782aa 139-543

bait

prey

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).

Complex modes of BicD homodimerization were characterized. The C-terminal domain (CTD) and the central region, each capable of homodimerizing in this assay, are also able to interact with each other.

Intramolecular interactions within BicD are thought hold the protein in an inactive conformation in the absence of cargo. Association of a cargo-binding protein with the BicD CTD presumably competes out the self-interaction, freeing the N-terminus of BicD to stimulate cargo transport.

Two-hybrid system: yeast GAL4-BD/GAL4-AD

FBrf0221802-1.CH.LS
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

self
BicD 

BicD

self
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
coiled-coil segment 3
sufficient binding region
aa 656-745

\'CC3\', coordinates relative to 782 aa isoform

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

Interaction in vitro; protein produced as a recombinant fusion protein in bacterial system.

Recombinant BicD forms a homodimer.

FBrf0221802-12.Y2H
Reference
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

bait

fused to GAL4 DNA-binding domain

BicD 

BicD

prey

fused to GAL4 activation domain

BicD 
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
N-terminal region
sufficient binding region
aa 1-543
BicD 
C-terminal region
sufficient binding region
aa 536-782
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).

The N-terminus of BicD (fused to GAL4 activation domain) interacts with the C-terminal region of BicD (fused to GAL4 DNA-binding domain).

FBrf0221802-4.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

self
BicD 

BicD

self
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
coiled-coil segment 3
sufficient binding region
aa 656-745

\'CC3\', coordinates relative to 782 aa isoform

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

Interaction in vitro; protein produced as a recombinant fusion protein in bacterial system.

BicD forms a highly asymmetric parallel coiled coil dimer; one chain is very straight, with the second chain wrapped around it in a highly supercoiled state.

FBrf0239530-1.EM
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

neutral component

YFP tag

BicD 

BicD

neutral component

YFP 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

EM consistent with a BicD dimer.

Interaction in vitro; protein produced as a recombinant fusion protein in baculovirus and Sf9 cell system.

FBrf0239530-2.PD.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

bait

FLAG, biotin tag

BicD 

BicD

prey

YFP, His tag

BicD 
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
CC1 domain
sufficient binding region
aa 21-380

coordinates relative to BicD-PA

BicD 
CC2 and CC3 domain
sufficient binding region
aa 318-782

coordinates relative to BicD-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 baculovirus and Sf9 cell system.

FBrf0246069-1.XC
Reference
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

neutral component
BicD 

BicD

neutral component
BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
C-terminal domain
sufficient binding region
aa 656-745
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

BicD forms a homodimer in crystallo. Crystal structure of a F684I mutant form of BicD was determined. While this mutant still formed a homodimer, it was found to be in a different coiled-coil register than wild-type BicD.

Interaction in vitro; protein produced as a recombinant fusion proteins in bacterial system.

FBrf0258683-1.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
BicD 

BicD

bait

fused to GAL4 DNA-binding domain

BicD 

BicD

prey

fused to GAL4 activation domain

BicD 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
BicD 
C-terminal domain
sufficient binding region
unspecified
Isoform-specific participants
Corresponds to
Description
Role
Note
Comments concerning this interaction

Two-hybrid system: yeast GAL4-BD/GAL4-AD; positive control.

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

External Crossreferences and Linkouts ( 0 )
References (6)