1K0Z:
reference: X-ray crystallographic analyses of symmetrical allosteric effectors of hemoglobin: compounds designed to link primary and secondary binding sites., Safo MK, Boyiri T, Burnett JC, Danso-Danquah R, Moure CM, Joshi GS, Abraham DJ, Acta Crystallogr D Biol Crystallogr 2002 Apr;58(Pt 4):634-44. PMID: 11914488

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