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. Author manuscript; available in PMC: 2012 Dec 5.
Published in final edited form as: Inorg Chem. 2011 Nov 1;50(23):12018–12024. doi: 10.1021/ic201479q

Figure 9.

Figure 9

Structure of the heme and the residues 12–16 in Ht c-552 (PDB: 1YNR).20 The hydrogen-bonding interactions from Cys12(CO) to Cys15(HN) and His16 (HN) proposed to play a role in modulating CXXCH rigidity and heme ruffling are shown with black lines. The side chains of residues 13 and 14 are omitted for clarity.