Hemoglobin Notes

Hemoglobin Notes - Myoglobin, Theamountofoxygen

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Myoglobin, an oxygen-binding protein Has a polypeptide chain with an iron-containing heme group. This group plays a major role in binding to molecular oxygen. Iron by itself cant bind to oxygen because it gets oxidize readily. Oxygen binding depends on the oxygen concentration The amount of oxygen bound to myoglobin is a function of the oxygen concentration and  the affinity of myoglobin for oxygen. Hemoglobin, a protein with quaternary structure Hemoglobin contains two alpha chains and two beta chains. The spatial arrangement of  these four polypeptides is known as hemoglobin’s quaternary structure. Hydrogen bonds, ion pairs, and disulfide bonds dictate the exact geometry of the  interacting subunits. Because there are two alpha and beta subunits, hemoglobin can be considered as dimer  of dimers.  Advantages of quaternary structure Two advantages:
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This note was uploaded on 06/11/2010 for the course CH 369 taught by Professor Kbrowning during the Spring '07 term at University of Texas.

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Hemoglobin Notes - Myoglobin, Theamountofoxygen

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