FB2026_03 , released September 17, 2026
Physical Interaction report
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General Information
Interaction Type
Interacting Genes
FlyBase ID
FBig0000102699
Interaction Network
Interactions Browser links
Arl1 network
Sec71 network
Reported Interactions
FBrf0217370-2.PD.WB
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Arl1 

Arl1

bait

His tag

Sec71

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

Interaction in vitro; bait produced as a recombinant fusion protein in bacterial system; prey derived from transfected S2 cell extract.

Sec71 interacts preferentially with a version of Arl1 that mimics the GTP-bound state, over one that mimics the GDP-bound state.

Sec71 interacts with Arl1, but not with Arf79F (Arf1) in this assay.

The N-terminal amphipathic helix of Arf protein was replaced with 10-His residues. His-tagged bait Arf protein was then used to coat the surface of liposomes containing low levels of a lipid with Ni-nitrilotriacetic acid (NTA) head group. Bait-coated liposomes are mixed with cell lysate, then liposomes are purified by centrifugation. This allows for the identification of protein interactions that occur preferentially or exclusively at the surface of a lipid bilayer.

FBrf0217370-3.PD.MW
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Arl1 

Arl1

bait

His tag

Sec71

prey

Strep tag

Experimental entities
Corresponds to
Identifier
Reported
Role
Note
Subregions with role in interaction
Corresponds to
Description
Role
Coordinates
Note
DCB and HUS domains
sufficient binding region
aa 1-453
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.

Sec71 interacts preferentially with a version of Arl1 that mimics the GTP-bound state, over one that mimics the GDP-bound state.

Sec71 interacts with Arl1, but not with Arf79F (Arf1) in this assay.

The N-terminal amphipathic helix of Arf protein was replaced with 10-His residues. His-tagged bait Arf protein was then used to coat the surface of liposomes containing low levels of a lipid with Ni-nitrilotriacetic acid (NTA) head group. Bait-coated liposomes are mixed with cell lysate, then liposomes are purified by centrifugation. This allows for the identification of protein interactions that occur preferentially or exclusively at the surface of a lipid bilayer.

FBrf0217370-30.PD.MS
Description
physical association
Collection
Source/Stage
Cell line used
Participants
Corresponds to
Reported as
Role
Note
Arl1 

Arl1

bait

His tag

Sec71

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 S2 cell extract.

Sec71 interacts preferentially with a version of Arl1 that mimics the GTP-bound state, over one that mimics the GDP-bound state.

The N-terminal amphipathic helix of Arf protein was replaced with 10-His residues. His-tagged bait Arf protein was then used to coat the surface of liposomes containing low levels of a lipid with Ni-nitrilotriacetic acid (NTA) head group. Bait-coated liposomes are mixed with cell lysate, then liposomes are purified by centrifugation. This allows for the identification of protein interactions that occur preferentially or exclusively at the surface of a lipid bilayer.

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