Structure of Human Heat Shock Protein 90
Author Information
Author(s): Lee Cheng-Chung, Lin Ta-Wei, Ko Tzu-Ping, Wang Andrew H.-J.
Primary Institution: Academia Sinica, Taipei, Taiwan
Hypothesis
What is the structure and oligomerization behavior of the human heat shock protein 90 (HSP90)?
Conclusion
The study reveals that the human HSP90 can self-assemble into a hexameric structure, which is crucial for its function.
Supporting Evidence
- The crystal structure reveals a hexameric assembly with triangular bipyramid geometry.
- MC-HSP90 exists in three major oligomer states: dimer, tetramer, and hexamer.
- The study identifies key residues involved in the oligomerization process.
Takeaway
HSP90 is a protein that helps other proteins fold correctly, and this study shows how it can form a larger structure made of six smaller pieces.
Methodology
The crystal structure of a truncated HSP90 was determined using X-ray crystallography, and oligomerization states were analyzed through size exclusion chromatography and analytical ultracentrifugation.
Limitations
The study does not explore the functional implications of the hexameric structure in detail.
Digital Object Identifier (DOI)
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