The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.
Hop Modulates hsp70/hsp90 Interactions in Protein Folding
Open accessAbstract
Hop is a 60-kDa protein characterized by its ability to bind the two chaperones, hsp70 and hsp90. We have tested the function of Hop using an assay for the refolding of denatured firefly luciferase. We show that Hop is involved in the process of refolding thermally denatured firefly luciferase in rabbit reticulocyte lysate. Hop also stimulates refolding by hsp70 and Ydj-1 in a purified refolding system. Hsp90 can also stimulate refolding, and optimal refolding is observed in the presence of both Hop and hsp90. Similar stimulation was observed when Hop was replaced by its yeast homolog Sti1. In assays of the binding of Hop to hsp70 and hsp90, Hop preferentially forms a complex with ADP-bound hsp70, and this process is unaffected by the presence of hsp90. Hop does not alter the ATPase activity or the rate of ADP dissociation of hsp70. Hop also appears to bind to the ADP-bound form of hsp90, blocking the ATP-dependent conversion of hsp90 to a form capable of interacting with p23. Conversely, once p23 is bound to hsp90, Hop binding is diminished. These results confirm that Hop provides a physical link between hsp70 and hsp90 and also indicate that Hop modulates the activities of both of these chaperone proteins.
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Freeman, B. C., Toft, D. O., & Morimoto, R. I. (1996) · Science · doi:10.1126/science.274.5293.1718 · Cited by 370
Self-citationBinding of p23 and hsp90 during assembly with the progesterone receptor.
Johnson, J. L., & Toft, D. O. (1995) · Molecular Endocrinology · doi:10.1210/mend.9.6.8592513 · Cited by 233
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Schopf, F. H., Biebl, M. M., & Buchner, J. (2017) · Nature Reviews Molecular Cell Biology · doi:10.1038/nrm.2017.20 · Cited by 1,540
Structure of TPR Domain–Peptide Complexes
Scheufler, C., Brinker, A., Bourenkov, G., Pegoraro, S., Moroder, L., Bartunik, H., Hartl, F. U., & Moarefi, I. (2000) · Cell · doi:10.1016/s0092-8674(00)80830-2 · Cited by 1,188
Dickey, C. A., Kamal, A., Lundgren, K., Klosak, N., Bailey, R. M., Dunmore, J., Ash, P., Shoraka, S., Zlatkovic, J., Eckman, C. B., et al. (2007) · Journal of Clinical Investigation · doi:10.1172/jci29715 · Cited by 642
Verghese, J., Abrams, J., Wang, Y., & Morano, K. A. (2012) · Microbiology and Molecular Biology Reviews · doi:10.1128/mmbr.05018-11 · Cited by 575
The Hsp90 chaperone machinery: Conformational dynamics and regulation by co-chaperones
Li, J., Soroka, J., & Buchner, J. (2012) · Biochimica et Biophysica Acta (BBA) - Molecular Cell Research · doi:10.1016/j.bbamcr.2011.09.003 · Cited by 498
Metadata
- Authors
- Johnson, B. D., Schumacher, R. J., Ross, E. D., & Toft, D. O.
- Venue
- Journal of Biological Chemistry
- Publisher
- Elsevier BV
- Published
- 1998-02
- Volume
- 273
- Issue
- 6
- Pages
- 3679-3686
- ISSN
- 0021-9258 (ISSN-L)
- OpenAlex
- W2144950416
- Cited by
- 358
- References
- 2
- FWCI
- 7.77
- Type
- journal article
- Language
- en
- Open access
- hybrid
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- Johnson, B. D., Schumacher, R. J., Ross, E. D., & Toft, D. O. (1998). Hop Modulates hsp70/hsp90 Interactions in Protein Folding. Journal of Biological Chemistry. https://doi.org/10.1074/jbc.273.6.3679
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