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1. The diagram on the right compares the O₂ binding prop- erties of normal adult hemoglobin (HbA) to those of one dubbed Hb Great-Lakes characterized by the mutation Leu(368)His. In the dia- gram Y = fraction of heme groups with bound O2, and pO2, the par- tial pressure of O2 above the solution, is measured in units of torr or mmHg. 1.0 You need draw only the central, linear portion of the Hill plot. State what is the likely magnitude of the Hill constant (ní) for HbA from your reading and state what is the likely range of the magni- tude of the Hill coefficient for Hb Great Lakes. 0.8 0.6 Draw the corresponding Hill plot, being careful to reproduce graph- ically the dissociation equilibrium constant for O₂ binding (K02) for y each hemoglobin and to show the difference in the extent of allo- stery or cooperativity of subunit interaction in each type of hemo- globin. 0.4 0.2 T L Hb Great Lakes 0 10 20 Hb A 1 1 30 40 po₂ (torr) 1 50 60

1. The diagram on the right compares the O₂ binding prop- erties of normal adult hemoglobin (HbA) to those of one dubbed Hb Great-Lakes characterized by the mutation Leu(368)His. In the dia- gram Y = fraction of heme groups with bound O2, and pO2, the par- tial pressure of O2 above the solution, is measured in units of torr or mmHg. 1.0 You need draw only the central, linear portion of the Hill plot. State what is the likely magnitude of the Hill constant (ní) for HbA from your reading and state what is the likely range of the magni- tude of the Hill coefficient for Hb Great Lakes. 0.8 0.6 Draw the corresponding Hill plot, being careful to reproduce graph- ically the dissociation equilibrium constant for O₂ binding (K02) for y each hemoglobin and to show the difference in the extent of allo- stery or cooperativity of subunit interaction in each type of hemo- globin. 0.4 0.2 T L Hb Great Lakes 0 10 20 Hb A 1 1 30 40 po₂ (torr) 1 50 60

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
Section: Chapter Questions
Problem 1P
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1. The diagram on the right compares the O₂ binding prop- erties of normal adult hemoglobin (HbA) to those of one dubbed Hb Great-Lakes characterized by the mutation Leu(368) His. In the dia- gram Y = fraction of heme groups with bound O₂, and pO2, the par- tial pressure of O2 above the solution, is measured in units of torr or mmHg. Draw the corresponding Hill plot, being careful to reproduce graph- ically the dissociation equilibrium constant for O₂ binding (Ko2) for y each hemoglobin and to show the difference in the extent of allo- stery or cooperativity of subunit interaction in each type of hemo- globin. You need draw only the central, linear portion of the Hill plot. State what is the likely magnitude of the Hill constant (nH) for HbA from your reading and state what is the likely range of the magni- tude of the Hill coefficient for Hb Great Lakes. 1.0 0.8 0.6 0.4 0.2 Hb Great Lakes 0 10 20 Hb A 1 1 30 40 pO₂ (torr) I 50 60
Transcribed Image Text:1. The diagram on the right compares the O₂ binding prop- erties of normal adult hemoglobin (HbA) to those of one dubbed Hb Great-Lakes characterized by the mutation Leu(368) His. In the dia- gram Y = fraction of heme groups with bound O₂, and pO2, the par- tial pressure of O2 above the solution, is measured in units of torr or mmHg. Draw the corresponding Hill plot, being careful to reproduce graph- ically the dissociation equilibrium constant for O₂ binding (Ko2) for y each hemoglobin and to show the difference in the extent of allo- stery or cooperativity of subunit interaction in each type of hemo- globin. You need draw only the central, linear portion of the Hill plot. State what is the likely magnitude of the Hill constant (nH) for HbA from your reading and state what is the likely range of the magni- tude of the Hill coefficient for Hb Great Lakes. 1.0 0.8 0.6 0.4 0.2 Hb Great Lakes 0 10 20 Hb A 1 1 30 40 pO₂ (torr) I 50 60
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