Allosteric Effects The conformational changes from the T to the R state is initiated by binding of oxygen to the heme movement of the proximal histidine towards the heme reorganization of protein-protein contacts between the individual subunits movement of the F-helix, which contains the proximal His binding of oxygen to the heme movement of the proximal histidine towards the heme reorganization of protein-protein contacts between the individual subunits movement of the F-helix, which contains the proximal His ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects Bisphosphoglycerate (BPG) cannot bind to the oxygenated R state of hemoglobin because it is displaced from the heme by movement of the proximal histidine its binding pocket becomes too small to accommodate BPG it is displaced from the heme by oxygen BPG binds to the R state with the same affinity as the T state it is displaced from the heme by movement of the proximal histidine its binding pocket becomes too small to accommodate BPG it is displaced from the heme by oxygen BPG binds to the R state with the same affinity as the T state ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects O2 binding to hemoglobin results in both (a) and (b) 100-fold lower affinity for the last O2 bound than for the first 100-fold higher affinity for the last O2 bound than for the first extensive protein conformational change both (a) and (b) 100-fold lower affinity for the last O2 bound than for the first 100-fold higher affinity for the last O2 bound than for the first extensive protein conformational change ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects An allosteric activator stabilizes the R state of the protein decreases the binding affinity increases the binding affinity both (a) and (c) stabilizes the R state of the protein decreases the binding affinity increases the binding affinity both (a) and (c) ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects A protein that binds two ligands in a non-cooperative manner will show a linear Scatchard Plot a hyperbolic binding curve a sigmodial binding curve both (b) and (c) a linear Scatchard Plot a hyperbolic binding curve a sigmodial binding curve both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects Small molecules affect hemoglobin (Hb) by increasing Hb affinity for O2 increasing [H+] and decreasing Hb affinity for O2 increasing [H+] decreasing Hb affinity for O2 increasing Hb affinity for O2 increasing [H+] and decreasing Hb affinity for O2 increasing [H+] decreasing Hb affinity for O2 ANSWER DOWNLOAD EXAMIANS APP
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