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. 2010 Oct 14;107(44):18783–18786. doi: 10.1073/pnas.1012381107

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Fig. 2. — heme region based on an X-ray crystal structure analysis showing covalent attachment of [Ru(bpy)₂(A-phen)]²⁺ at the nonnative cysteine residue (C97) with d(Ru-Fe) = 24 Å and the hydrogen bonding interaction between the tryptophan residue at position 96 and one of the propionics.

Inline graphic — heme region based on an X-ray crystal structure analysis showing covalent attachment of [Ru(bpy)₂(A-phen)]²⁺ at the nonnative cysteine residue (C97) with d(Ru-Fe) = 24 Å and the hydrogen bonding interaction between the tryptophan residue at position 96 and one of the propionics.