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. 2015 Nov 28;44(1):449–463. doi: 10.1093/nar/gkv1318

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© The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Structure of the YabA-NTD tetramer. (A) Ribbon representation of the two chains of YabA^1–62 in the asymmetric unit A (ice blue) and B (light green) with the N- and C-terminal residues labelled. (B and D) The YabA^1–62 tetramer. Each chain is shown as a ribbon either colored ramped as shown in the key (B) or colored by chain (D) with an accompanying surface rendering. (C) Ribbon representation of molecules A’ and B illustrating the tweezer arrangement of these chains. (E) The four helix bundle region. The chains are displayed as ribbons colored by chain A (ice blue) B (light green) A’ (lemon) and B’ (coral). The Cα and side chains of apolar residues in the interior are colored by residue type, light green for Val and Ile and lawn green for Leu to emphasize the leucine zipper. Polar interactions between the chains are shown as dashed lines and residues forming the prominent interchain interactions referred to in the text are labeled. (F) Stereo image of the coiled coil region of chains B and A’. The Cα and the side chains of residues from the two chains are displayed with the carbon atoms colored according to the chain and with nitrogens in blue, oxygens in red and sulphurs in yellow. Polar interactions between the chains are shown as dashed lines.