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3D structure of DKK1 indicates its involvement in both canonical and non-canonical Wnt pathways

  • Structural and Functional Analysis of Biopolymers and Their Complexes
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Abstract

Dikkoppf-1 (DKK1) is an antagonist of the canonical Wnt signaling pathway. The importance of DKK1 as a diagnostic and therapeutic agent in a wide range of diseases along with its significance in a variety of biological processes accentuate the necessity to decipher its 3D structure that would pave the way towards the development of relevant selective inhibitors. A DKK1 structure model predicted by the Robetta server with structural refinements including a 10 ns molecular dynamics run was subjected to functional and docking analyses. We hypothesize that the N-terminal region of the DKK1 molecule could be functionally important for both canonical and noncanonical Wnt pathways. Moreover, it seems that DKK1 could be involved in interactions with the Frizzled receptors, leading to the activation of the Planar Cell Polarity (PCP) pathway (activation of Jun N-terminal kinase (JNK) Pathway) and Wnt/Ca2+ pathway (activation of CamKII).

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Authors and Affiliations

  1. Department of Medical Biotechnology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran

    S. Khalili & M. J. Rasaee

  2. Department of Virology, School of Medical Sciences, Tarbiat Modares University, Tehran, Iran

    T. Bamdad

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  1. S. Khalili
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  2. M. J. Rasaee
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  3. T. Bamdad
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Correspondence to M. J. Rasaee.

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The article is published in the original.

Published in Russian in Molekulyarnaya Biologiya, 2017, Vol. 51, No. 1, pp. 180–192.

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Khalili, S., Rasaee, M.J. & Bamdad, T. 3D structure of DKK1 indicates its involvement in both canonical and non-canonical Wnt pathways. Mol Biol 51, 155–166 (2017). https://doi.org/10.1134/S0026893317010095

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