Haemoglobin hasa)Primary structureb)Secondary structurec)Tertiary structured)Quaternary structureCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Quaternary structure and it's can binding with 4 O2 molecules.

Answer

The structure for hemoglobin is very similar to myoglobin except that it has a quaternary structure due to the presence of four protein chain subunits.Each protein chain subunit contains a heme group with the iron attached. Each hemoglobin molecule can bind to a total of four oxygen molecules.

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Haemoglobin is Quaternary structure.

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The answer is    option D      but I can't upload the solution   SO I kept it  as a  profile

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Option d is correct answer

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Haemoglobin is globular protein which has Quaternary structure....

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Hemoglobin's quaternary structure comes from its four subunits in roughly a tetrahedral arrangement. In most vertebrates, the hemoglobinmolecule is an assembly of four globular protein subunits. Each subunit is composed of a protein chain tightly associated with a non-protein prosthetic heme group.

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Haemoglobin is tetramer and it consists of four subunits ,,,,,,it possess a quaternary structure

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Haemoglobin has quaternary structure comes from its four subunits in ruoghly a tetrahedral arrangement.

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Quaternary structure

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Hemoglobin is quaternary with its 4 subunits i.e 2 alpha and 2 beta units....

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Haemoglobin has 4 tertiary subunits that is,2 alpha and 2 beta units which join together to form quarternery structure of haemoglobin

Answer

Quaternary structure of Haemoglobin

Haemoglobin is a protein found in red blood cells that is responsible for carrying oxygen from the lungs to the rest of the body. It is composed of four subunits, each containing a heme group that binds to oxygen. The quaternary structure of haemoglobin refers to the arrangement and interaction of these four subunits.

Composition of haemoglobin

Each subunit of haemoglobin consists of a polypeptide chain and a heme group. The polypeptide chain is made up of amino acids that are linked together by peptide bonds. The heme group contains an iron ion that is capable of binding to oxygen.

Quaternary structure

The quaternary structure of haemoglobin is formed by the interaction of the four subunits. These subunits can be either identical or different, depending on the type of haemoglobin. In adult humans, the two alpha subunits are identical, while the two beta subunits are also identical. This gives rise to the formula HbA, where 'A' refers to the adult form of haemoglobin.

The subunits in the quaternary structure are held together by various types of bonding interactions, including hydrogen bonds, electrostatic interactions, and hydrophobic interactions. These interactions stabilize the overall structure of haemoglobin and allow it to function properly.

Function of quaternary structure

The quaternary structure of haemoglobin is essential for its function as an oxygen carrier. When oxygen binds to one subunit, it induces a conformational change in the protein, which increases its affinity for oxygen. This change is transmitted to the other subunits, causing them to also bind to oxygen. This cooperative binding allows haemoglobin to efficiently pick up oxygen in the lungs and release it in the tissues.

Conclusion

In conclusion, the quaternary structure of haemoglobin refers to the arrangement and interaction of its four subunits. This structure is essential for its function as an oxygen carrier, allowing it to efficiently bind and release oxygen.

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