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In chemistry, biochemistry, and pharmacology, a dissociation constant (K D) is a specific type of equilibrium constant that measures the propensity of a larger object to separate (dissociate) reversibly into smaller components, as when a complex falls apart into its component molecules, or when a salt splits up into its component ions.
The binding constant, or affinity constant/association constant, is a special case of the equilibrium constant K, [1] and is the inverse of the dissociation constant. [2] It is associated with the binding and unbinding reaction of receptor (R) and ligand (L) molecules, which is formalized as:
When the difference between successive pK values is about four or more, as in this example, each species may be considered as an acid in its own right; [27] In fact salts of H 2 PO − 4 may be crystallised from solution by adjustment of pH to about 5.5 and salts of HPO 2− 4 may be crystallised from solution by adjustment of pH to about 10 ...
K a is variously named a dissociation constant, [3] an acid ionization constant, [2]: 668 an acidity constant [1] or an ionization constant. [ 2 ] : 708 It serves as an indicator of the acid strength: stronger acids have a higher K a value (and a lower p K a value).
The distribution constant (or partition ratio) (K D) is the equilibrium constant for the distribution of an analyte in two immiscible solvents. [1] [2] [3]In chromatography, for a particular solvent, it is equal to the ratio of its molar concentration in the stationary phase to its molar concentration in the mobile phase, also approximating the ratio of the solubility of the solvent in each phase.
Texted exchanges, whether between employees and managers or parents and children, can lead to miscommunications for reasons as small as a period at the end of a word or sentence and as subtle as ...
Per the study, Americans would pay between $13.9 billion to $24 billion more than normal for clothing and $6.4 billion to $10.7 billion more in footwear. The home appliances that notoriously ...
where k is the maximal transcription rate of gene X. Likewise, if the production of protein from gene Y is down-regulated (repressed) by a transcription factor Z, then the rate of production of protein Y can be modeled as a differential equation in terms of the concentration of activated Z protein: