In the given figure,what does the part labele | vedclass

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(A) The provided figure represents the structure of hemoglobin. Hemoglobin is a quaternary protein consisting of four polypeptide subunits (two $\alph

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Heme group

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(A) The provided figure represents the structure of hemoglobin. Hemoglobin is a quaternary protein consisting of four polypeptide subunits (two $\alpha$ and two $\beta$ chains). Each subunit contains a prosthetic group called the heme group,which contains an iron $(Fe^{2+})$ ion at its center. In the diagram,$P$ points to one of the polypeptide subunits,while the heme group is associated with these subunits. However,in the context of standard $NCERT$ diagrams for hemoglobin,the subunits are often labeled to show the heme-containing polypeptide chains. Given the options,the heme group is the functional prosthetic group containing iron. Therefore,the most appropriate answer is that $P$ represents the heme group.

In the given figure,what does the part labeled $P$ represent?

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