Which of the Following Is NOT Correct Concerning Myoglobin

question 25

Multiple Choice

Which of the following is NOT correct concerning myoglobin?

• A) The globin chain contains an extensive α-helix structure.
• B) The heme group is bound to the globin chain by two disulfide bonds to cysteine residues.
• C) The iron of the heme group is in the Fe²⁺ oxidation state.
• D) The diameter of the iron ion decreases upon binding to oxygen.
• E) The function of myoglobin is oxygen storage in muscle.

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