3D1K:
reference: Spectroscopic and Crystallographic Characterization of a Tetrameric Hemoglobin Oxidation Reveals Structural Features of the Functional Intermediate Relaxed/Tense State., Vitagliano L, Vergara A, Bonomi G, Merlino A, Verde C, Prisco GD, Howes BD, Smulevich G, Mazzarella L, J Am Chem Soc. 2008 Jul 22. PMID: 18642904

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