Search results
Results from the WOW.Com Content Network
It is associated with the binding and unbinding reaction of receptor (R) and ligand (L) molecules, which is formalized as: R + L ⇌ RL. The reaction is characterized by the on-rate constant k on and the off-rate constant k off, which have units of M −1 s −1 and s −1, respectively. In equilibrium, the forward binding transition R + L → ...
Receptor–ligand binding kinetics also involves the on- and off-rates of binding. A main goal of receptor–ligand kinetics is to determine the concentrations of the various kinetic species (i.e., the states of the receptor and ligand) at all times, from a given set of initial concentrations and a given set of rate constants.
In coordination chemistry, a stability constant (also called formation constant or binding constant) is an equilibrium constant for the formation of a complex in solution. It is a measure of the strength of the interaction between the reagents that come together to form the complex. There are two main kinds of complex: compounds formed by the ...
When each receptor has a single ligand binding site, the system is described by [] + [] []with an on-rate (k on) and off-rate (k off) related to the dissociation constant through K d =k off /k on.
The affinity between protein and ligand is given by the equilibrium dissociation constant K d or the inverse of the association constant 1/K a (or binding constant 1/K b) that relates the concentrations of the complexed and uncomplexed species in solution. The dissociation constant is defined as K d = [] [] []
The dissociation rate constant is defined using K off. [2] The Michaelis-Menten constant is denoted by K m and is represented by the equation K m = (K off + K cat)/ K on [definition needed]. The rates that the enzyme binds and dissociates from the substrate are represented by K on and K off respectively.
Binding affinity is a measure of dynamic equilibrium of the ratio of on-rate (k on) and off-rate (k off) under specific concentrations of reactants.The affinity constant, K a, is the inverse of the dissociation constant, K d.
Molecular binding is an attractive interaction between two molecules that results in a stable association in which the molecules are in close proximity to each other. It is formed when atoms or molecules bind together by sharing of electrons. It often, but not always, involves some chemical bonding.