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. 2013 Nov 27;33(1):104–120. doi: 10.1080/07391102.2013.855142

Figure 8.

Figure 8.

Highly populated inter-subunit hydrogen bonds in the tetramer connect the extended 150-loop with the 110-helix. (A) Hydrogen bonds (gray dashed lines) formed by residues 136–155 of 1918iNA (dark blue) to a neighboring subunit (yellow) connect to the 110-helix or the C-terminal residues E462’ and P464’. The residues of the iNA typical loop insertion are highlighted in red. Non-interacting side chains are shown as spheres at C-β. (B) Average occupancy rates show similar patterns for those hydrogen bonds in the four investigated system. Arrows are pointing from donor to acceptor residues. Residues interacting with backbone atoms are marked with bb. Occupancy rates exceeding 100% result from furcated hydrogen-bonding partners.