Question
What is there in the 5th position of deoxyhemoglobin? Explain with a suitable diagram. Give the relevant equations for the equilibrium constant regarding the oxygen binding by myoglobin.
Answer :
Word Count : 259
In deoxyhemoglobin, the iron atom of the heme group is in the ferrous state (Fe²⁺) and is coordinated in a square planar fashion by the four nitrogen atoms of the porphyrin ring. The fifth coordination position, located on the proximal side of the heme plane, is occupied by the nitrogen atom of a histidine residue, commonly referred to as the proximal histidine (His F8). ______ __________ __________ __________ __________ ________ _______.
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In deoxyhemoglobin, the iron atom of the heme group is in the ferrous state (Fe²⁺) and is coordinated in a square planar fashion by the four nitrogen atoms of the porphyrin ring. The fifth coordination position, located on the proximal side of the heme plane, is occupied by the nitrogen atom of a histidine residue, commonly referred to as the proximal histidine (His F8). ______ __________ __________ __________ __________ ________ _______.
____ ______ _______ ________ __________ ____ _________.
______ _______ ____ ________ ___ ___ _____ ______ _______ ______.
____ __________ ______ ____ ___.
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