Cross-Linking-MS (XL-MS)

An interaction is detected between two proteins using chemically reactive or photo-activatable cross-linking reagents that covalently link amino acids in close proximity, followed by mass spectrometry analysis to identify the linked peptides (reviewed in PMID 37406423, 37104977). Experiments may be carried with live cells or cell lysates in which all proteins are expressed at endogenous levels (e.g. PMID 34349018, 35235311) or with recombinant proteins (e.g., PMID 28537071).

Publication

Stress-specific NONO interactomes reveal a key role of Hsp70 chaperone activity in regulation of paraspeckle formation.

Odonkor I, Shrestha BK, Nielsen SR, Kournoutis A, Bjorlo IE, Sajib SD, Hedberg A, Gronset TA, Larsen KB, Brun JA, Knutsen E, Lellahi SM, Perander M

Paraspeckles are stress-induced nuclear RNA-protein condensates that assemble on the long non-coding RNA NEAT1. Their increased formation under certain cellular circumstances has gained growing interest due to their association with serious human diseases such as neurodegenerative disorders and cancer. The biological functions of paraspeckles still appear obscure, but increasing evidence suggests that they contribute to regulation of gene expression by ... [more]

J Cell Sci Dec. 19, 2025; (); [Pubmed: 41416371]

Throughput

  • High Throughput

Additional Notes

  • interaction enriched under SFN (sulforaphane) treatment in a Neat1KO background

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
PPP1CB NONO
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
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Curated By

  • BioGRID