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.

Publication

Functional proteomic screens reveal an essential extracellular role for hsp90 alpha in cancer cell invasiveness.

Eustace BK, Sakurai T, Stewart JK, Yimlamai D, Unger C, Zehetmeier C, Lain B, Torella C, Henning SW, Beste G, Scroggins BT, Neckers L, Ilag LL, Jay DG

Tumour cell invasiveness is crucial for cancer metastasis and is not yet understood. Here we describe two functional screens for proteins required for the invasion of fibrosarcoma cells that identified the molecular chaperone heat shock protein 90 (hsp90). The hsp90 alpha isoform, but not hsp90 beta, is expressed extracellularly where it interacts with the matrix metalloproteinase 2 (MMP2). Inhibition of ... [more]

Nat. Cell Biol. Jun. 01, 2004; 6(6);507-14 [Pubmed: 15146192]

Throughput

Low Throughput

Curated By

BioGRID

Interaction Summary

HSP90AA1

Gene Ontology Biological Process

Gene Ontology Molecular Function

ATP binding [TAS]ATPase activity [IDA]MHC class II protein complex binding [IDA]TPR domain binding [IDA, TAS]identical protein binding [IPI]nitric-oxide synthase regulator activity [IDA]nucleotide binding [TAS]poly(A) RNA binding [IDA]protein binding [IPI]protein homodimerization activity [TAS]

Gene Ontology Cellular Component

MMP2