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Structure determination of the transactivation domain of p53 in complex with S100A4 using annexin A2 as a crystallization chaperone

Ecsédi, Péter and Gógl, Gergő and Hóf, Henrietta and Kiss, Bence and Harmat, Veronika and Nyitray, László (2020) Structure determination of the transactivation domain of p53 in complex with S100A4 using annexin A2 as a crystallization chaperone. STRUCTURE. pp. 1-19. ISSN 0969-2126 (print); 1878-4186 (online)

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Abstract

To fully understand the environmental factors that influence crystallization is an enormous task, therefore crystallographers are still forced to work “blindly” trying as many crystallizing conditions and mutations to improve crystal packing as possible. Numerous times these random attempts simply fail even when using state-of-the-art techniques. As an alternative, crystallization chaperones, having good crystal-forming properties, can be invoked. Today, the almost exclusively used such protein is the maltose-binding protein (MBP) and crystallographers need other widely applicable options. Here, we introduce annexin A2 (ANXA2), which has just as good, if not better, crystal-forming ability than the wild-type MBP. Using ANXA2 as heterologous fusion partner, we were able to solve the atomic resolution structure of a challenging crystallization target, the transactivation domain (TAD) of p53 in complex with the metastasis-associated protein S100A4. p53 TAD forms an asymmetric fuzzy complex with the symmetric S1004 and could interfere with its function.

Item Type: Article
Subjects: Q Science / természettudomány > QD Chemistry / kémia > QD05 Crystallography / kristálytan
Depositing User: Dóra K. Menyhárd
Date Deposited: 07 Apr 2021 13:46
Last Modified: 07 Apr 2021 13:46
URI: http://real.mtak.hu/id/eprint/123571

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