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. 2013 Jan 10;8(1):e53841. doi: 10.1371/journal.pone.0053841

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© 2013 Wang et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Interhelical angles (A) and interhelical distances (B) between helix2 and helix3 in Smad1 along with respective integrated distributions for the Smad4+DNA+Smad1 (magenta) and Smad1+DNA+Smad1 (blue) models; (C) The changes of interhelical angles and distances for Smad4+DNA+Smad1 (light pink) and Smad1+DNA+Smad1 (light blue) models.