Chemistry, 03.02.2020 20:55, emmmmmily997
Hemoglobin (hb) can be viewed as having two quaternary states, a low oxygen affinity state (t), and a high oxygen affinity state (r). which of the following statements about the binding of o2 by hb are true? upon binding a molecule of oxygen, hb undergoes a conformational change that makes the binding of subsequent o2 molecules more favored. the conformational change induced in hb upon binding oxygen is the result of a small movement (0.2 å) of the iron cation into the center of heme. site-directed mutagenesis studies have indicated that the cooperativity of o2 binding in hb is attributable to the movement of the f helix in hb. site-directed mutagenesis studies in which the proximal his residues of the f helix have been replaced by glycines have indicated the mutant protein still shows cooperativity of o2 binding.
Answers: 3
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Hemoglobin (hb) can be viewed as having two quaternary states, a low oxygen affinity state (t), and...
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