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Structure and Properties of Peptides - Medical Science

Q1:

In deoxy hemoglobin (Hb), the Fe (II) is coordinated to

A four nitrogens of heme, the proximal His, and a water molecule

B four nitrogens of heme and to a water molecule

C two nitrogens of heme and to three His residues in Hb

D two nitrogens of heme and to three water molecules

ANS:A - four nitrogens of heme, the proximal His, and a water molecule

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