Allosteric Effects The conformational changes from the T to the R state is initiated by 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 movement of the proximal histidine towards the heme binding of oxygen to the heme reorganization of protein-protein contacts between the individual subunits ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects Small molecules affect hemoglobin (Hb) by decreasing Hb affinity for O2 increasing [H+] increasing [H+] and decreasing Hb affinity for O2 increasing Hb affinity for O2 decreasing Hb affinity for O2 increasing [H+] increasing [H+] and decreasing Hb affinity for O2 increasing Hb affinity for O2 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects The Hill coefficient (nH) for myoglobin and hemoglobin are respectively 2.8 and 1.0 1.2 and 4.5 4.5 and 1.2 1.0 and 2.8 2.8 and 1.0 1.2 and 4.5 4.5 and 1.2 1.0 and 2.8 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects The specificity of a ligand binding site on a protein is based on the presence of hydrating water molecules the opposite chirality of the binding ligand the amino acid residues lining the binding site the absence of competing ligands the presence of hydrating water molecules the opposite chirality of the binding ligand the amino acid residues lining the binding site the absence of competing ligands ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects O2 binding to hemoglobin results in 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) 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 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects A protein that shows infinite cooperative for binding of n ligands will show a Hill coefficient (nH) of 0.0 show a Hill coefficient (nH) of n only be found in either the unliganded form or the fully liganded form both (b) and (c) show a Hill coefficient (nH) of 0.0 show a Hill coefficient (nH) of n only be found in either the unliganded form or the fully liganded form both (b) and (c) ANSWER DOWNLOAD EXAMIANS APP
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