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. 2008 Jul 21;36(14):4778–4787. doi: 10.1093/nar/gkn448

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© 2008 The Author(s)

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.0/uk/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 5. — Structure of the C.Esp1396I–DNA complex. Protein subunits are shown in yellow (subunit A), green (subunit B), pink (subunit C) and blue (subunit D). Details are shown of (A) hydrogen bonding at the dimer interface; (B) two alternative R35 contacts from the central subunits B and C, involving both protein–protein and protein–DNA interactions; (C) protein–DNA interactions stabilizing the compressed minor groove around TATA; (D) R35 contacts to the conserved guanine, G3 (outer subunits, A and D).