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

In-Depth In Vivo Crosslinking in Minutes by a Compact, Membrane-Permeable, and Alkynyl-Enrichable Crosslinker.

Gao H, Zhao L, Zhong B, Zhang B, Gong Z, Zhao B, Liu Y, Zhao Q, Zhang L, Zhang Y

Chemical crosslinking coupled with mass spectrometry (CXMS) has emerged as a powerful technique to obtain the dynamic conformations and interaction interfaces of protein complexes. Limited by the poor cell membrane permeability, chemical reactivity, and biocompatibility of crosslinkers, in vivo crosslinking to capture the dynamics of protein complexes with finer temporal resolution and higher coverage is attractive but challenging. In this ... [more]

Anal Chem May. 31, 2022; 94(21);7551-7558 [Pubmed: 35575683]

Throughput

  • High Throughput

Additional Notes

  • High confidence crosslinked peptides were identified with the FDR set to 0.01 at the peptide-spectrum matches (PSM) level and PSMs >= 2.
  • MS non-cleavable crosslinker of bis(succinimidyl) with propargyl tag (BSP)

Related interactions

InteractionExperimental Evidence CodeDatasetThroughputScoreCurated ByNotes
RPL21 RPS6
Co-fractionation
Co-fractionation

Interaction inferred from the presence of two or more protein subunits in a partially purified protein preparation. If co-fractionation is demonstrated between 3 or more proteins, then add them as a complex.

High1BioGRID
742497
RPL21 RPS6
Co-fractionation
Co-fractionation

Interaction inferred from the presence of two or more protein subunits in a partially purified protein preparation. If co-fractionation is demonstrated between 3 or more proteins, then add them as a complex.

High1BioGRID
1271261
RPL21 RPS6
Cross-Linking-MS (XL-MS)
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).

High-BioGRID
3679762

Curated By

  • BioGRID