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

The Hsp70-Hsp90 co-chaperone Hop/Stip1 shifts the proteostatic balance from folding towards degradation.

Bhattacharya K, Weidenauer L, Luengo TM, Pieters EC, Echeverria PC, Bernasconi L, Wider D, Sadian Y, Koopman MB, Villemin M, Bauer C, Ruediger SGD, Quadroni M, Picard D

Hop/Stip1/Sti1 is thought to be essential as a co-chaperone to facilitate substrate transfer between the Hsp70 and Hsp90 molecular chaperones. Despite this proposed key function for protein folding and maturation, it is not essential in a number of eukaryotes and bacteria lack an ortholog. We set out to identify and to characterize its eukaryote-specific function. Human cell lines and the ... [more]

Nat Commun Nov. 25, 2020; 11(1);5975 [Pubmed: 33239621]

Throughput

High Throughput

Related interactions

Interaction	Experimental Evidence Code	Dataset	Throughput	Score	Curated By	Notes
HSPA4 STIP1	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.	Cho NH (2022)	High	-	BioGRID	3358568
STIP1 HSPA4	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.	Johnson BD (1998)	Low	-	BioGRID	-
STIP1 HSPA4	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.	Wan C (2015)	High	0.8629	BioGRID	1263342
HSPA4 STIP1	Reconstituted Complex Reconstituted Complex An interaction is detected between purified proteins in vitro.	Brinker A (2002)	Low	-	BioGRID	-
STIP1 HSPA4	Reconstituted Complex Reconstituted Complex An interaction is detected between purified proteins in vitro.	Graumann K (2000)	Low	-	BioGRID	-
STIP1 HSPA4	Reconstituted Complex Reconstituted Complex An interaction is detected between purified proteins in vitro.	Horibe T (2011)	Low	-	BioGRID	-

Curated By

BioGRID

Interaction Summary

STIP1

Gene Ontology Biological Process

Gene Ontology Molecular Function

poly(A) RNA binding [IDA]protein binding [IPI]

Gene Ontology Cellular Component

HSPA4