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Question
Among these, Quaternary structure is present in
Among these, Quaternary structure is present in
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Solution
The correct option is B Haemoglobin
Haemoglobin is a respiratory pigment present in the RBC of the blood. It is a oligoprotein which has four polypeptide chain, two alpha chain and two beta chain. It has a quaternary structure where each polypeptide has heme group with iron in the center. The polypeptide are linked together by the disulphide groups. The structure is stabilized by h-bonds. It is a chromoprotein because it has heme as a cofactor, which is iron containing pigment and makes the blood appear red. Each iron combines with a oxygen molecule. So, the correct answer is option C.
Haemoglobin is a respiratory pigment present in the RBC of the blood. It is a oligoprotein which has four polypeptide chain, two alpha chain and two beta chain. It has a quaternary structure where each polypeptide has heme group with iron in the center. The polypeptide are linked together by the disulphide groups. The structure is stabilized by h-bonds. It is a chromoprotein because it has heme as a cofactor, which is iron containing pigment and makes the blood appear red. Each iron combines with a oxygen molecule.
So, the correct answer is option C.
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