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The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.

Thermodynamic stability of wild-type and mutant p53 core domain

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Bullock, Alex N., Henckel, Julia, DeDecker, Brian S., Johnson, Christopher M., Nikolova, Penka V., Proctor, Mark R., Lane, David P., Fersht, Alan R.·1997·Proceedings of the National Academy of Sciences

Abstract

Some 50% of human cancers are associated with mutations in the core domain of the tumor suppressor p53. Many mutations are thought just to destabilize the protein. To assess this and the possibility of rescue, we have set up a system to analyze the stability of the core domain and its mutants. The use of differential scanning calorimetry or spectroscopy to measure its melting temperature leads to irreversible denaturation and aggregation and so is useful as only a qualitative guide to stability. There are excellent two-state denaturation curves on the addition of urea that may be analyzed quantitatively. One Zn 2+ ion remains tightly bound in the holo-form of p53 throughout the denaturation curve. The stability of wild type is 6.0 kcal (1 kcal = 4.18 kJ)/mol at 25°C and 9.8 kcal/mol at 10°C. The oncogenic mutants R175H, C242S, R248Q, R249S, and R273H are destabilized by 3.0, 2.9, 1.9, 1.9, and 0.4 kcal/mol, respectively. Under certain denaturing conditions, the wild-type domain forms an aggregate that is relatively highly fluorescent at 340 nm on excitation at 280 nm. The destabilized mutants give this fluorescence under milder denaturation conditions.

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Metadata

Authors
Bullock, A. N., Henckel, J., DeDecker, B. S., Johnson, C. M., Nikolova, P. V., Proctor, M. R., Lane, D. P., & Fersht, A. R.
Venue
Proceedings of the National Academy of Sciences
Published
1997-12-23
Volume
94
Issue
26
Pages
14338-14342
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2081288740
Cited by
405
References
3
FWCI
3.29
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Thermodynamic stability of wild-type and mutant p53 core domain. https://app.cochat.ai/papers/10.1073/pnas.94.26.14338
The paper
Bullock, A. N., Henckel, J., DeDecker, B. S., Johnson, C. M., Nikolova, P. V., Proctor, M. R., Lane, D. P., & Fersht, A. R. (1997). Thermodynamic stability of wild-type and mutant p53 core domain. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.94.26.14338

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