Chemistry, 16.10.2019 16:30, albusaidi4480
Identify the true statements regarding the heme group of myoglobin and hemoglobin. the iron in the heme group can form six bonds. the fifth is with an imidazole ring of a histidine, and the sixth is with oxygen. the globin chains of myoglobin and hemoglobin prevent the oxidation of fe2+fe2+ to fe3+fe3+ , which irreversibly binds oxygen. the cooperativity of oxygen binding in hemoglobin arises from a shorter fe−o2fe−o2 bond length in the t state compared to the r state. a heme group contains four pyrrole rings, which are linked via methene (methine) bridges. the heme group is conjugated. myoglobin contains one heme group. the r state of hemoglobin has greater affinity for o2o2 than the t state because the iron atom is in the plane of the porphyrin ring.
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Identify the true statements regarding the heme group of myoglobin and hemoglobin. the iron in the h...
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