Allosteric Effects The conformational changes from the T to the R state is initiated by reorganization of protein-protein contacts between the individual subunits movement of the proximal histidine towards the heme movement of the F-helix, which contains the proximal His binding of oxygen to the heme reorganization of protein-protein contacts between the individual subunits movement of the proximal histidine towards the heme movement of the F-helix, which contains the proximal His binding of oxygen to the heme ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects The Hill coefficient (nH) for myoglobin and hemoglobin are respectively 1.2 and 4.5 4.5 and 1.2 2.8 and 1.0 1.0 and 2.8 1.2 and 4.5 4.5 and 1.2 2.8 and 1.0 1.0 and 2.8 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects An allosteric activator increases the binding affinity both (a) and (c) decreases the binding affinity stabilizes the R state of the protein increases the binding affinity both (a) and (c) decreases the binding affinity stabilizes the R state of the protein ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects A protein that shows infinite cooperative for binding of n ligands will show a Hill coefficient (nH) of n both (b) and (c) only be found in either the unliganded form or the fully liganded form show a Hill coefficient (nH) of 0.0 show a Hill coefficient (nH) of n both (b) and (c) only be found in either the unliganded form or the fully liganded form show a Hill coefficient (nH) of 0.0 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects Bisphosphoglycerate (BPG) cannot bind to the oxygenated R state of hemoglobin because 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 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 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects A protein that binds two ligands in a non-cooperative manner will show a hyperbolic binding curve both (b) and (c) a linear Scatchard Plot a sigmodial binding curve a hyperbolic binding curve both (b) and (c) a linear Scatchard Plot a sigmodial binding curve ANSWER DOWNLOAD EXAMIANS APP
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