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

Antagonistic roles of canonical and Alternative-RPA in disease-associated tandem CAG repeat instability.

Gall-Duncan T, Luo J, Jurkovic CM, Fischer LA, Fujita K, Deshmukh AL, Harding RJ, Tran S, Mehkary M, Li V, Leib DE, Chen R, Tanaka H, Mason AG, Levesque D, Khan M, Razzaghi M, Prasolava T, Lanni S, Sato N, Caron MC, Panigrahi GB, Wang P, Lau R, Castel AL, Masson JY, Tippett L, Turner C, Spies M, La Spada AR, Campos EI, Curtis MA, Boisvert FM, Faull RLM, Davidson BL, Nakamori M, Okazawa H, Wold MS, Pearson CE

Expansions of repeat DNA tracts cause >70 diseases, and ongoing expansions in brains exacerbate disease. During expansion mutations, single-stranded DNAs (ssDNAs) form slipped-DNAs. We find the ssDNA-binding complexes canonical replication protein A (RPA1, RPA2, and RPA3) and Alternative-RPA (RPA1, RPA3, and primate-specific RPA4) are upregulated in Huntington disease and spinocerebellar ataxia type 1 (SCA1) patient brains. Protein interactomes of RPA ... [more]

Cell Oct. 26, 2023; 186(22);4898-4919.e25 [Pubmed: 37827155]

Throughput

High Throughput

Additional Notes

>5 log2-fold enrichment and p value < 0.01 versus untransfected controls
BioID
Untreated HEK293T cells (8.5768 log2-fold enrichment)

Related interactions

Interaction	Experimental Evidence Code	Dataset	Throughput	Score	Curated By	Notes
TP53BP1 RPA2	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.	Yoo E (2005)	Low	-	BioGRID	243797
TP53BP1 RPA2	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.	Yoo E (2005)	Low	-	BioGRID	243796
RPA2 TP53BP1	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.	Havugimana PC (2022)	High	-	BioGRID	3438811
TP53BP1 RPA2	Proximity Label-MS 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.	Gupta R (2018)	High	-	BioGRID	-

Curated By

BioGRID

Interaction Summary

RPA2

Gene Ontology Biological Process

Gene Ontology Molecular Function

damaged DNA binding [IDA]enzyme binding [IPI]protein binding [IPI]protein phosphatase binding [IPI]single-stranded DNA binding [IC, IDA, ISS]ubiquitin protein ligase binding [IPI]

Gene Ontology Cellular Component

TP53BP1

Gene Ontology Biological Process

Gene Ontology Molecular Function

RNA polymerase II activating transcription factor binding [IPI]RNA polymerase II transcription cofactor activity [IMP]methylated histone binding [IDA]p53 binding [IPI]protein binding [IPI]