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. Author manuscript; available in PMC: 2013 Dec 5.

Published in final edited form as: J Am Chem Soc. 2012 Nov 20;134(48):19746–19757. doi: 10.1021/ja308346b

The metal site in the X-ray crystal structure of wild-type iron azurin. (a) Overlay of iron(II) (orange) and copper(II) (blue) azurins. (b) Overlay of chain B of iron(II) azurin (orange) with chain A of apo-azurin (white). The water molecule in apo-azurin is indicated. (c) Overlay of chain B of iron(II) azurin with chain B of apo-azurin.

The metal site in the X-ray crystal structure of wild-type iron azurin. (a) Overlay of iron(II) (orange) and copper(II) (blue) azurins. (b) Overlay of chain B of iron(II) azurin (orange) with chain A of apo-azurin (white). The water molecule in apo-azurin is indicated. (c) Overlay of chain B of iron(II) azurin with chain B of apo-azurin.