Consider the Fe(Il) heme center in hemoglobin. Iron is colored orange and dioxygen is colored red. A. Circle the distal Histidine residue. B. What is the function of the distal Histidine residue? C. What keeps bound oxygen “bent", and not binding orthogonal to the plane of the porphyrin? D. What would happen to Fe(lI) if oxygen were to bind perpendicular (orthogonal) to the plane of the porphyrin? E. What happens to the structure of the porphyrin when oxygen dissociates from hemoglobin?
Consider the Fe(Il) heme center in hemoglobin. Iron is colored orange and dioxygen is colored red. A. Circle the distal Histidine residue. B. What is the function of the distal Histidine residue? C. What keeps bound oxygen “bent", and not binding orthogonal to the plane of the porphyrin? D. What would happen to Fe(lI) if oxygen were to bind perpendicular (orthogonal) to the plane of the porphyrin? E. What happens to the structure of the porphyrin when oxygen dissociates from hemoglobin?
Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter11: The Blood
Section: Chapter Questions
Problem 1SQE
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Consider the Fe(Il) heme center in hemoglobin. Iron is colored orange and dioxygen is colored red. A. Circle the distal Histidine residue. B. What is the function of the distal Histidine residue? C. What keeps bound oxygen “bent", and not binding orthogonal to the plane of the porphyrin? D. What would happen to Fe(lI) if oxygen were to bind perpendicular (orthogonal) to the plane of the porphyrin? E. What happens to the structure of the porphyrin when oxygen dissociates from hemoglobin?
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