allosteric inhibition

allosteric inhibition
inhibition of an enzyme by binding of an inhibitor at an allosteric site that causes at the catalytic site either reduced binding affinity of the enzyme for the substrate or decreased rate of catalytic turnover.

Medical dictionary. 2011.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Allosteric regulation — In biochemistry, allosteric regulation is the regulation of an enzyme or other protein by binding an effector molecule at the protein s allosteric site (that is, a site other than the protein s active site). Effectors that enhance the protein s… …   Wikipedia

  • allosteric control — Inhibition or activation of an enzyme by a small regulatory molecule that interacts with the enzyme at a site (allosteric site) other than the active site (at which catalytic activity occurs). The interaction changes the shape of the enzyme, thus …   Universalium

  • Allosteric serotonin reuptake inhibitor — is a marketing classification invented by the pharmaceutical company Lundbeck for its selective serotonin reuptake inhibitor (SSRI) escitalopram, the S stereoisomer of the SSRI citalopram. It is based on the observation that the R isomer of… …   Wikipedia

  • inhibition — /in i bish euhn, in hi /, n. 1. the act of inhibiting. 2. the state of being inhibited. 3. something that inhibits; constraint. 4. Psychol. a. the blocking or holding back of one psychological process by another. b. inappropriate conscious or… …   Universalium

  • allosteric enzyme — (al o ster ik) An enzyme whose activity is altered by the binding of a small effector or modulator molecule at a regulatory site separate from the catalytic site; effector binding causes a conformational change in the enzyme and its catalytic… …   Dictionary of microbiology

  • Competitive inhibition — is a form of enzyme inhibition where binding of the inhibitor to the active site on the enzyme prevents binding of the substrate and vice versa. Contents 1 Mechanism 2 Equation 3 Derivation 4 …   Wikipedia

  • Non-competitive inhibition — is a type of enzyme inhibition where the inhibitor reduces the activity of the enzyme, by binding not to the active site on the enzyme, but to a different site.[1] More specifically, it is a special instance of mixed inhibition where the… …   Wikipedia

  • feedback inhibition — Suppression of the activity of an enzyme by a product of the sequence of reactions in which the enzyme is participating. When the product accumulates in a cell beyond an optimal amount, it decreases its own production by inhibiting an enzyme… …   Universalium

  • Negative allosteric modulator — A negative allosteric modulator (NAM) is a drug which decreases the activity of a receptor indirectly via disactivation of an allosteric site on the protein. NAMs are similar to inverse agonists in that they conteract overall receptor activation …   Wikipedia

  • enzyme — /en zuym/, n. Biochem. any of various proteins, as pepsin, originating from living cells and capable of producing certain chemical changes in organic substances by catalytic action, as in digestion. Cf. ase. [1880 85; < MGk énzymos leavened (Gk… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”