Catalytic domain
Catalytic Domain
The Catalytic Domain (pronunciation: /kəˈtalɪtɪk doʊˈmeɪn/) is a crucial component of many enzymes that facilitates the catalysis or acceleration of chemical reactions. The etymology of the term 'catalytic' is derived from the Greek word 'katalyein', which means 'to dissolve', and 'domain' from the Latin 'dominus', meaning 'master' or 'owner'.
Definition
The Catalytic Domain is the region of an enzyme where the substrate binds and the chemical reaction occurs. This domain is responsible for the enzyme's catalytic activity, and it often contains active site residues that directly participate in the making and breaking of chemical bonds.
Function
The primary function of the Catalytic Domain is to accelerate the rate of chemical reactions. It achieves this by providing an environment in which the reaction is more likely to occur. This environment is often a crevice or pocket in the enzyme where the substrate can bind.
Related Terms
- Enzyme Kinetics: The study of the rates at which enzymes catalyze reactions.
- Protein Domain: A part of a protein sequence and structure that can evolve, function, and exist independently of the rest of the protein chain.
- Allosteric Regulation: The regulation of an enzyme or other protein by binding an effector molecule at the protein's allosteric site (a site other than the protein's active site).
See Also
- Enzyme
- Catalysis
- Substrate (chemistry)
- Active Site
- Enzyme Kinetics
- Protein Domain
- Allosteric Regulation
External links
- Medical encyclopedia article on Catalytic domain
- Wikipedia's article - Catalytic domain
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