3G52:
reference: Ligand migration and cavities within Scapharca Dimeric HbI: studies by time-resolved crystallo-graphy, Xe binding, and computational analysis., Knapp JE, Pahl R, Cohen J, Nichols JC, Schulten K, Gibson QH, Srajer V, Royer WE Jr, Structure. 2009 Nov 11;17(11):1494-504. PMID: 19913484

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