6HFO
Human Hsp90 co-chaperone TTC4 C-domain
Summary for 6HFO
| Entry DOI | 10.2210/pdb6hfo/pdb |
| Related | 6HFM |
| Descriptor | Tetratricopeptide repeat protein 4, PHOSPHATE ION (3 entities in total) |
| Functional Keywords | unique fold, wheel domain, hsp90 co-chaperone, chaperone |
| Biological source | Homo sapiens (Human) |
| Total number of polymer chains | 1 |
| Total formula weight | 19717.02 |
| Authors | Huber, E.M.,Groll, M. (deposition date: 2018-08-21, release date: 2019-03-27, Last modification date: 2024-01-17) |
| Primary citation | Schopf, F.H.,Huber, E.M.,Dodt, C.,Lopez, A.,Biebl, M.M.,Rutz, D.A.,Muhlhofer, M.,Richter, G.,Madl, T.,Sattler, M.,Groll, M.,Buchner, J. The Co-chaperone Cns1 and the Recruiter Protein Hgh1 Link Hsp90 to Translation Elongation via Chaperoning Elongation Factor 2. Mol.Cell, 74:73-87.e8, 2019 Cited by PubMed Abstract: The Hsp90 chaperone machinery in eukaryotes comprises a number of distinct accessory factors. Cns1 is one of the few essential co-chaperones in yeast, but its structure and function remained unknown. Here, we report the X-ray structure of the Cns1 fold and NMR studies on the partly disordered, essential segment of the protein. We demonstrate that Cns1 is important for maintaining translation elongation, specifically chaperoning the elongation factor eEF2. In this context, Cns1 interacts with the novel co-factor Hgh1 and forms a quaternary complex together with eEF2 and Hsp90. The in vivo folding and solubility of eEF2 depend on the presence of these proteins. Chaperoning of eEF2 by Cns1 is essential for yeast viability and requires a defined subset of the Hsp90 machinery as well as the identified eEF2 recruiting factor Hgh1. PubMed: 30876805DOI: 10.1016/j.molcel.2019.02.011 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.65 Å) |
Structure validation
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