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8) One variant of hemoglobin (Variant X) has a pso = 30 torr; another variant of hemoglobin has a pso = 40 torr (Variant Y). Circle the variant with the greatest affinity for dioxygen. Variant X Variant Y

8) One variant of hemoglobin (Variant X) has a pso = 30 torr; another variant of hemoglobin has a pso = 40 torr (Variant Y). Circle the variant with the greatest affinity for dioxygen. Variant X Variant Y

Biochemistry
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
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8) One variant of hemoglobin (Variant X) has a pso = 30 torr; another variant of hemoglobin has a pso = 40 torr (Variant Y). Circle the variant with the greatest affinity for dioxygen. Variant X Variant Y 9) How many peptide fragments would you expect to generate from reacting the following amino acid sequence with the hydrolytic enzyme trypsin, followed by a reaction with cyanogens bromide? LPETYADFHGWQPLMNCVSDEJHGAQIIYTL 10) Consider the Fe(I) 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(ll) 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?
Transcribed Image Text:8) One variant of hemoglobin (Variant X) has a pso = 30 torr; another variant of hemoglobin has a pso = 40 torr (Variant Y). Circle the variant with the greatest affinity for dioxygen. Variant X Variant Y 9) How many peptide fragments would you expect to generate from reacting the following amino acid sequence with the hydrolytic enzyme trypsin, followed by a reaction with cyanogens bromide? LPETYADFHGWQPLMNCVSDEJHGAQIIYTL 10) Consider the Fe(I) 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(ll) 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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