BAIT

TIM44

ISP45, MIM44, MPI1, L000001138, YIL022W
Essential component of the TIM23 complex; tethers the import motor and regulatory factors (PAM complex) to the translocation channel (Tim23p-Tim17p core complex); TIM23 complex is short for the translocase of the inner mitochondrial membrane
GO Process (1)
GO Function (2)
GO Component (3)
Saccharomyces cerevisiae (S288c)
PREY

MGE1

YGE1, GRPE, L000000729, L000002638, L000001101, YOR232W
Mitochondrial matrix cochaperone; nucleotide release factor for Ssc1p in protein translocation and folding; also acts as cochaperone for Ssq1p in folding of Fe-S cluster proteins; acts as oxidative sensor to regulate mitochondrial Ssc1p; in presence of oxidative stress, dimeric Mge1p becomes a monomer and unable to regulate Ssc1p function; homolog of E. coli GrpE and human Mge1 (GRPEL1), which also responds to oxidative stress
GO Process (2)
GO Function (1)
GO Component (3)
Saccharomyces cerevisiae (S288c)

Affinity Capture-MS

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner is identified by mass spectrometric methods.

Publication

Global mitochondrial connectivity map reveals the landscape of yeast functional assemblies and conserved protein communities.

Jessulat M, Phanse S, Aoki H, Broderick K, Zhang Q, Castro IG, Novales NA, Hossain SA, Saccon T, Moutaoufik MT, Joseph TP, Amin S, Hoell L, Minic Z, Bykov Y, Preminger N, Crespo SG, Snider J, Golshani A, Stagljar I, Rodriguez-Medina JR, Clarke CF, Schuldiner M, Babu M

Mitochondria are essential organelles whose functions depend on coordinated multiprotein complexes, yet their composition and organization remain incomplete. Here, we present a large-scale map of mitochondrial protein complexes by integrating affinity purification of 740 endogenously GFP-tagged mitochondrial proteins with biochemical co-fractionation of mitochondrial extracts from yeast (Saccharomyces cerevisiae) grown under respiratory conditions. Mass spectrometry identifies 13,716 high-confidence protein associations and ... [more]

Nat Commun May. 05, 2026; (); [Pubmed: 42086547]

Quantitative Score

  • 5.835 [Confidence Score]

Throughput

  • High Throughput

Additional Notes

  • Affinity Capture-MS and Co-fractionation
  • High throughput score cut-off value/description The PPIs are derived from two methods AP-MS and CF-MS. The LLS PPI score is derived from the LLS AP-MS and LLS CF-MS scores. The cutoff for AP-MS is 5.34 and CF-MS is 3.12. If the PPI is detected by both methods and meets the threshold in one of the methods the Average LLS score is taken as the final LLS score for the PPI.

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
MGE1 TIM44
Affinity Capture-Western
Affinity Capture-Western

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner identified by Western blot with a specific polyclonal antibody or second epitope tag. This category is also used if an interacting protein is visualized directly by dye stain or radioactivity. Note that this differs from any co-purification experiment involving affinity capture in that the co-purification experiment involves at least one extra purification step to get rid of potential contaminating proteins.

Low-BioGRID
-
TIM44 MGE1
Affinity Capture-Western
Affinity Capture-Western

An interaction is inferred when a bait protein is affinity captured from cell extracts by either polyclonal antibody or epitope tag and the associated interaction partner identified by Western blot with a specific polyclonal antibody or second epitope tag. This category is also used if an interacting protein is visualized directly by dye stain or radioactivity. Note that this differs from any co-purification experiment involving affinity capture in that the co-purification experiment involves at least one extra purification step to get rid of potential contaminating proteins.

Low-BioGRID
-
TIM44 MGE1
Co-purification
Co-purification

An interaction is inferred from the identification of two or more protein subunits in a purified protein complex, as obtained by classical biochemical fractionation or affinity purification and one or more additional fractionation steps.

Low-BioGRID
-
TIM44 MGE1
Reconstituted Complex
Reconstituted Complex

An interaction is inferred between proteins in vitro. This can include proteins in recombinant form or proteins isolated directly from cells with recombinant or purified bait. For example, GST pull-down assays where a GST-tagged protein is first isolated and then used to fish interactors from cell lysates are considered reconstituted complexes (e.g. PUBMED: 14657240, Fig. 4A or PUBMED: 14761940, Fig. 5). This can also include gel-shifts, surface plasmon resonance, isothermal titration calorimetry (ITC) and bio-layer interferometry (BLI) experiments. The bait-hit directionality may not be clear for 2 interacting proteins. In these cases the directionality is up to the discretion of the curator.

Low-BioGRID
-

Curated By

  • BioGRID