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Title | Structure of the p53 degradation complex from HPV16. |
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Journal, issue, pages | Nat Commun, Vol. 15, Issue 1, Page 1842, Year 2024 |
Publish date | Feb 28, 2024 |
Authors | John C K Wang / Hannah T Baddock / Amirhossein Mafi / Ian T Foe / Matthew Bratkowski / Ting-Yu Lin / Zena D Jensvold / Magdalena Preciado López / David Stokoe / Dan Eaton / Qi Hao / Aaron H Nile / |
PubMed Abstract | Human papillomavirus (HPV) is a significant contributor to the global cancer burden, and its carcinogenic activity is facilitated in part by the HPV early protein 6 (E6), which interacts with the E3- ...Human papillomavirus (HPV) is a significant contributor to the global cancer burden, and its carcinogenic activity is facilitated in part by the HPV early protein 6 (E6), which interacts with the E3-ligase E6AP, also known as UBE3A, to promote degradation of the tumor suppressor, p53. In this study, we present a single-particle cryoEM structure of the full-length E6AP protein in complex with HPV16 E6 (16E6) and p53, determined at a resolution of ~3.3 Å. Our structure reveals extensive protein-protein interactions between 16E6 and E6AP, explaining their picomolar binding affinity. These findings shed light on the molecular basis of the ternary complex, which has been pursued as a potential therapeutic target for HPV-driven cervical, anal, and oropharyngeal cancers over the last two decades. Understanding the structural and mechanistic underpinnings of this complex is crucial for developing effective therapies to combat HPV-induced cancers. Our findings may help to explain why previous attempts to disrupt this complex have failed to generate therapeutic modalities and suggest that current strategies should be reevaluated. |
External links | Nat Commun / PubMed:38418456 / PubMed Central |
Methods | EM (single particle) |
Resolution | 3.38 Å |
Structure data | EMDB-29941, PDB-8gcr: |
Chemicals | ChemComp-ZN: |
Source |
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Keywords | VIRAL PROTEIN / Complex / HPV / ubiquitin ligase / tumor suppressor |