competitive inhibition

inhibition

[in″hĭ-bish´un] 1. arrest or restraint of a process.2. in psychoanalysis, the conscious or unconscious restraining of an impulse or desire. adj., adj inhib´itory.competitive inhibition inhibition of enzyme activity by an inhibitor (a substrate analogue) that competes with the substrate for binding sites on the enzymes.contact inhibition inhibition of cell division and cell motility in normal animal cells when in close contact with each other.noncompetitive inhibition inhibition of enzyme activity by substances that combine with the enzyme at a site other than that utilized by the substrate.

com·pet·i·tive in·hi·bi·tion

blocking of the action of an enzyme by a compound that binds to the free enzyme, preventing the substrate from binding and thus preventing the enzyme from acting on that substrate. The competitive inhibitor is often a substrate analogue and binds at the active site; however, this is not an absolute requirement for competitive inhibition. Saturating concentrations of substrate can remove the inhibition. Compare: isostery. Synonym(s): selective inhibition

com·pet·i·tive in·hi·bi·tion

(kŏm-pet'i-tiv in'hi-bish'ŭn) Blocking of the action of an enzyme by a compound that binds to the free enzyme, preventing the substrate from binding and thus preventing the enzyme from acting on that substrate.
Synonym(s): selective inhibition.

competitive inhibition

a form of enzyme control in which an inhibitor molecule very similar in structure to the normal SUBSTRATE of an enzyme becomes reversibly bound to the ACTIVE SITE, thus reducing the quantity of enzyme available. However, if excess substrate is present the inhibitor can be forced out by the substrate molecule which takes its place and the reaction proceeds. Compare NONCOMPETITIVE INHIBITION.

单词	competitive inhibition
释义	DictionarySeeinhibition competitive inhibition competitive inhibition [kəm′ped·əd·iv ‚in·ə′bish·ən] (biochemistry) Enzyme inhibition in which the inhibitor competes with the natural substrate for the active site of the enzyme; may be overcome by increasing substrate concentration. competitive inhibition inhibition [in″hĭ-bish´un] 1. arrest or restraint of a process.2. in psychoanalysis, the conscious or unconscious restraining of an impulse or desire. adj., adj inhib´itory.competitive inhibition inhibition of enzyme activity by an inhibitor (a substrate analogue) that competes with the substrate for binding sites on the enzymes.contact inhibition inhibition of cell division and cell motility in normal animal cells when in close contact with each other.noncompetitive inhibition inhibition of enzyme activity by substances that combine with the enzyme at a site other than that utilized by the substrate. com·pet·i·tive in·hi·bi·tion blocking of the action of an enzyme by a compound that binds to the free enzyme, preventing the substrate from binding and thus preventing the enzyme from acting on that substrate. The competitive inhibitor is often a substrate analogue and binds at the active site; however, this is not an absolute requirement for competitive inhibition. Saturating concentrations of substrate can remove the inhibition. Compare: isostery. Synonym(s): selective inhibition com·pet·i·tive in·hi·bi·tion (kŏm-pet'i-tiv in'hi-bish'ŭn) Blocking of the action of an enzyme by a compound that binds to the free enzyme, preventing the substrate from binding and thus preventing the enzyme from acting on that substrate. Synonym(s): selective inhibition. competitive inhibition a form of enzyme control in which an inhibitor molecule very similar in structure to the normal SUBSTRATE of an enzyme becomes reversibly bound to the ACTIVE SITE, thus reducing the quantity of enzyme available. However, if excess substrate is present the inhibitor can be forced out by the substrate molecule which takes its place and the reaction proceeds. Compare NONCOMPETITIVE INHIBITION.
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