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Figure 3
Examples of Fe—N sites in the PDB, with Fe atoms shown in brown, O atoms shown in red and N atoms shown in blue. C atoms are shown in different colors for the different iron-binding sites. (a) Heme with high-spin iron(II), C atoms shown in green; (b) heme with low-spin iron(III), C atoms shown in cyan.

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983
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