3HHB: The Crystal Structure Of Human Deoxyhaemoglobin At 1.74 Angs Resolution
reference: The crystal structure of human deoxyhaemoglobin at 1.74 A resolution., Fermi G, Perutz MF, Shaanan B, Fourme R, J Mol Biol 1984 May 15;175(2):159-74. PMID: 6726807

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