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Reported Question / Answer
Q.) In deoxy hemoglobin (Hb), the Fe (II) is coordinated to
1)
four nitrogens of heme and to a water molecule
2)
four nitrogens of heme, the proximal His, and a water molecule
3)
two nitrogens of heme and to three water molecules
4)
two nitrogens of heme and to three His residues in Hb
5)
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Answer :
2
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