1CLS:
reference: Positive and negative cooperativities at subsequent steps of oxygenation regulate the allosteric behavior of multistate sebacylhemoglobin., Bucci E, Razynska A, Kwansa H, Gryczynski Z, Collins JH, Fronticelli C, Unger R, Braxenthaler M, Moult J, Ji X, Gilliland G, Biochemistry 1996 Mar 19;35(11):3418-25. PMID: 8639491

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