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Uncompetitive inhibition (which Laidler and Bunting preferred to call anti-competitive inhibition, [1] but this term has not been widely adopted) is a type of inhibition in which the apparent values of the Michaelis–Menten parameters and are decreased in the same proportion.
It is important to note that while all non-competitive inhibitors bind the enzyme at allosteric sites (i.e. locations other than its active site)—not all inhibitors that bind at allosteric sites are non-competitive inhibitors. [1] In fact, allosteric inhibitors may act as competitive, non-competitive, or uncompetitive inhibitors. [1]
When used for determining the type of enzyme inhibition, the Lineweaver–Burk plot can distinguish between competitive, pure non-competitive and uncompetitive inhibitors. The various modes of inhibition can be compared to the uninhibited reaction.
For example, an inhibitor might compete with substrate A for the first binding site, but be a non-competitive inhibitor with respect to substrate B in the second binding site. [26] Traditionally reversible enzyme inhibitors have been classified as competitive, uncompetitive, or non-competitive, according to their effects on K m and V max. [14]
Pure non-competitive inhibition is very rare, being mainly confined to effects of protons and some metal ions. Cleland recognized this, and he redefined noncompetitive to mean mixed . [ 57 ] Some authors have followed him in this respect, but not all, so when reading any publication one needs to check what definition the authors are using.
Why did General Motors (GM) fail?A second reason is its uncompetitive vehicles. As I posted in early 2006, comparing GM vehicles to those of Toyota Motors revealed that people were willing to pay ...
a possible mechanism of non-competitive inhibition, a kind of mixed inhibition.. Mixed inhibition is a type of enzyme inhibition in which the inhibitor may bind to the enzyme whether or not the enzyme has already bound the substrate but has a greater affinity for one state or the other. [1]
The Key Differences Between Salted vs. Unsalted Butter. The key difference between these types of butter is, obviously, salt. Unsalted butter is made with just heavy cream, while salted butter ...