Allosteric Effects The conformational changes from the T to the R state is initiated by movement of the proximal histidine towards the heme binding of oxygen to the heme reorganization of protein-protein contacts between the individual subunits movement of the F-helix, which contains the proximal His movement of the proximal histidine towards the heme binding of oxygen to 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 A protein that binds two ligands in a non-cooperative manner will show a sigmodial binding curve a linear Scatchard Plot a hyperbolic binding curve both (b) and (c) a sigmodial binding curve a linear Scatchard Plot a hyperbolic binding curve both (b) and (c) 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 Small molecules affect hemoglobin (Hb) by decreasing Hb affinity for O2 increasing [H+] and decreasing Hb affinity for O2 increasing [H+] increasing Hb affinity for O2 decreasing Hb affinity for O2 increasing [H+] and decreasing Hb affinity for O2 increasing [H+] increasing Hb affinity for O2 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects An allosteric activator stabilizes the R state of the protein decreases the binding affinity both (a) and (c) increases the binding affinity stabilizes the R state of the protein decreases the binding affinity both (a) and (c) increases the binding affinity ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects O2 binding to hemoglobin results in 100-fold higher affinity for the last O2 bound than for the first 100-fold lower affinity for the last O2 bound than for the first extensive protein conformational change both (a) and (b) 100-fold higher affinity for the last O2 bound than for the first 100-fold lower affinity for the last O2 bound than for the first extensive protein conformational change both (a) and (b) ANSWER DOWNLOAD EXAMIANS APP