Proximity Label-MS

An interaction is inferred when a bait-enzyme fusion protein selectively modifies a vicinal protein with a diffusible reactive product, followed by affinity capture of the modified protein and identification by mass spectrometric methods.

Publication

Construction of a proximity labeling vector to identify protein-protein interactions in human stem cells.

Gomes-Junior R, Moreira CMDN, Dallagiovanna B

Identification of protein-protein interactions is essential for understanding protein functions in biological processes. While immunoprecipitation has traditionally been used to isolate proteins and their partners, it faces limitations in capturing transient interactions. Proximity labeling, particularly with the biotin ligase TurboID, addresses this challenge by enabling rapid and efficient identification of interacting proteins in vivo. Human induced pluripotent stem cells are ... [more]

PLoS One May. 30, 2025; 20(5);e0324779 [Pubmed: 40445938]

Throughput

  • High Throughput

Additional Notes

  • A cutoff of p-value lesser of equal to 0.05 and a Log2deltaLFQ difference greater or equal to 2 was used to define true interactions
  • pluripotent stage

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
U2AF2 PPIB
Affinity Capture-MS
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.

Low-BioGRID
-

Curated By

  • BioGRID