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 The specificity of a ligand binding site on a protein is based on the opposite chirality of the binding ligand the presence of hydrating water molecules the absence of competing ligands the amino acid residues lining the binding site the opposite chirality of the binding ligand the presence of hydrating water molecules the absence of competing ligands the amino acid residues lining the binding site ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects In hemoglobin, allosteric effects occur for maintaining Fe in the Fe2+ state only in humans to maximize oxygen delivery to the tissues to minimize oxygen delivery to the tissues for maintaining Fe in the Fe2+ state only in humans to maximize oxygen delivery to the tissues to minimize oxygen delivery to the tissues ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects The Hill coefficient (nH) for myoglobin and hemoglobin are respectively 2.8 and 1.0 4.5 and 1.2 1.0 and 2.8 1.2 and 4.5 2.8 and 1.0 4.5 and 1.2 1.0 and 2.8 1.2 and 4.5 ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects An allosteric activator decreases the binding affinity increases the binding affinity stabilizes the R state of the protein both (a) and (c) decreases the binding affinity increases the binding affinity stabilizes the R state of the protein both (a) and (c) ANSWER DOWNLOAD EXAMIANS APP
Allosteric Effects Bisphosphoglycerate (BPG) cannot bind to the oxygenated R state of hemoglobin because its binding pocket becomes too small to accommodate BPG it is displaced from the heme by oxygen it is displaced from the heme by movement of the proximal histidine BPG binds to the R state with the same affinity as the T state its binding pocket becomes too small to accommodate BPG it is displaced from the heme by oxygen it is displaced from the heme by movement of the proximal histidine BPG binds to the R state with the same affinity as the T state ANSWER DOWNLOAD EXAMIANS APP
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