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. 2010 Mar 17;38(13):4514–4526. doi: 10.1093/nar/gkq161

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© The Author(s) 2010. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 4. — The SopB α6–α7 secondary dimer interactions. (A) Ribbon diagram showing the residues that are involved in the formation of the secondary dimer interaction. Two views are included that are related by a ∼90° rotation. Residues that contribute to the interface are shown as sticks and labeled. Also labeled are α6 and α7. (B) Superimposition of subunits of all the secondary dimers reveals that the dimerization is not symmetric but mediated by one subunit making one set of contacts and the other making a different set of contacts. This asymmetric arrangement is observed in all dimers.