FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000104013
Interaction Network
Interactions Browser links
ana2 network
ctp network
Reported Interactions
FBrf0215580-10.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ana2 

Ana2

bait

MYC tag

ctp 

ctp

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

mud was present in low abundance in S2 cells, and its levels were not influenced by the amount of ana2 or ctp. However, increased amounts of Mud protein were present in the immune complex with HA-ctp when Myc-ana2 was coexpressed, suggesting that increasing ctp recruited more mud. Increasing amounts of ana in S2 cells also appeared to stabilize ctp. into the protein complex.

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

FBrf0215580-11.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

Ctp

bait

HA tag

ana2 

Ana2

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

mud was present in low abundance in S2 cells, and its levels were not influenced by the amount of ana2 or ctp. However, increased amounts of Mud protein were present in the immune complex with HA-ctp when Myc-ana2 was coexpressed, suggesting that increasing ctp recruited more mud into the protein complex.

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

FBrf0215580-2.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ana2 

Ana2

bait

fused to GAL4 DNA-binding domain

ana2 
ana2 
ctp 

Ctp

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
ana2 
N2 domain
sufficient binding region
aa 1-200

N-terminal ana2 without coiled-coil domain

ana2 
coiled coil domain
sufficient binding region
aa 201-274
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.

FBrf0215580-3.Y2H
Description
physical association
Assay
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

Ctp

bait

fused to GAL4 DNA-binding domain

ana2 

Ana2

prey

fused to GAL4 activation domain

ana2 
ana2 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ana2 
N2 domain
sufficient binding region
aa 1-200

N-terminal ana2 without coiled-coil domain

ana2 
coiled coil domain
sufficient binding region
aa 201-274
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.

FBrf0215580-8.coIP.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

Ctp

bait

Venus tag

ana2 

Ana2

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

FBrf0225712-1.ITC
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

ctp

bait
ana2 

ana2

prey
ana2 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ana2 
interaction domain
sufficient binding region
aa 159-168aa 237-246

coordinates refer to ana2-PA

coordinates refer to ana2-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 peptide synthesized in vitro.

FBrf0225712-2.XC
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

ctp

neutral component
ctp 

ctp

neutral component
ctp 

ctp

neutral component
ana2 

ana2

neutral component

peptide

ana2 
ana2 

ana2

neutral component

peptide

ana2 

ana2

neutral component

peptide

ana2 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ana2 
interaction domain
sufficient binding region
aa 159-168aa 237-246

coordinates refer to ana2-PA

coordinates refer to ana2-PA

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; peptide synthesized in vitro.

FBrf0225712-3.SLS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
ctp 

ctp

neutral component

untagged or SNAP tag

ctp 

ctp

neutral component

untagged or SNAP tag

ctp 

ctp

neutral component

untagged or SNAP tag

ana2 

ana2

neutral component
ana2 
ana2 

ana2

neutral component
ana2 

ana2

neutral component
ana2 
Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
ana2 
interaction domain
sufficient binding region
aa 156-251

coordinates refer to ana2-PA

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

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

Size of complex suggests 4 ana2 molecules and 8 ctp molecules.

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