Kinetic studies and modeling of a self-replicating system
摘要:
The design, synthesis, and study of a molecular template, 11a, that catalyzes its own formation from simpler components, 9 and 10d, is described. Autocatalysis is shown by the following: (1) the increase in rate of reaction of 9 and 10d in the presence of lla; (2) the reduction in rate of reaction in the presence of 2,6-bis(acetylamino)pyridine inhibitor; and (3) the reduction in rate of reaction when a component incapable of template behavior, 10h, is substituted for 10d. Three kinetic pathways are elucidated: (1) the background bimolecular reaction (eq 6); (2) the preassociative mechanism (eq 7); and (3) the template termolecular process (eq 8). A kinetic model for the replication process is introduced, and equilibrium and rate constants are determined. Predictions for the shapes of the product growth curves are made.
Kinetic studies and modeling of a self-replicating system
摘要:
The design, synthesis, and study of a molecular template, 11a, that catalyzes its own formation from simpler components, 9 and 10d, is described. Autocatalysis is shown by the following: (1) the increase in rate of reaction of 9 and 10d in the presence of lla; (2) the reduction in rate of reaction in the presence of 2,6-bis(acetylamino)pyridine inhibitor; and (3) the reduction in rate of reaction when a component incapable of template behavior, 10h, is substituted for 10d. Three kinetic pathways are elucidated: (1) the background bimolecular reaction (eq 6); (2) the preassociative mechanism (eq 7); and (3) the template termolecular process (eq 8). A kinetic model for the replication process is introduced, and equilibrium and rate constants are determined. Predictions for the shapes of the product growth curves are made.