Completing the family of human Eps15 homology domains : Solution structure of the internal Eps15 homology domain of γ-synergin

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2022
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Weininger, Ulrich
Löw, Christian
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Eps15 homology (EH) domains are universal interaction domains to establish networks of protein–protein interactions in the cell. These networks mainly coordinate cellular functions including endocytosis, actin remodeling, and other intracellular signaling pathways. They are well characterized in structural terms, except for the internal EH domain from human γ-synergin (EHγ). Here, we complete the family of EH domain structures by determining the solution structure of the EHγ domain. The structural ensemble follows the canonical EH domain fold and the identified binding site is similar to other known EH domains. But EHγ differs significantly in the N- and C-terminal regions. The N-terminal α-helix is shortened compared to known homologues, while the C-terminal one is fully formed. A significant proportion of the remaining N- and C-terminal regions are well structured, a feature not seen in other EH domains. Single mutations in both the N-terminal and the C-terminal structured extensions lead to the loss of the distinct three-dimensional fold and turn EHγ into a molten globule like state. Therefore, we propose that the structural extensions in EHγ function as a clamp and are undoubtedly required to maintain its tertiary fold.

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ISO 690KOVERMANN, Michael, Ulrich WEININGER, Christian LÖW, 2022. Completing the family of human Eps15 homology domains : Solution structure of the internal Eps15 homology domain of γ-synergin. In: Protein Science. Wiley. 2022, 31(4), pp. 811-821. ISSN 0961-8368. eISSN 1469-896X. Available under: doi: 10.1002/pro.4269
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@article{Kovermann2022-04Compl-56278,
  year={2022},
  doi={10.1002/pro.4269},
  title={Completing the family of human Eps15 homology domains : Solution structure of the internal Eps15 homology domain of γ-synergin},
  number={4},
  volume={31},
  issn={0961-8368},
  journal={Protein Science},
  pages={811--821},
  author={Kovermann, Michael and Weininger, Ulrich and Löw, Christian}
}
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