Introduction Of Enzyme | NMDCAT 2022 | Enzyme
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- Опубликовано: 5 окт 2024
- Introduction Of Enzyme || MDCAT || Enzyme
Enzymes are the most important group of proteins which are biologically active. They tremendously only a few amino acids, while rest of the bulk of the amino acids maintains the globular structure Enzymes are composed of hundreds of amino acids joined together and coiled upon themselves which is essential for the proper functioning of the enzymes. The cofactor usually acts as “bridge” Some enzymes consist solely of proteins. Others also have a non-protein part known as a co-factor, of the enzyme.
drive reactions which would otherwise be diicult or impossible. Some enzymes use metal ions as
co-factors like Mg2+, Fe2+, Cu2+, Zn2+ etc. The detachable co-factor is known as an activator if it is an
bring about catalysis. Sometimes the co-factor provides a source of chemical energy, helping to
increase the eiciency of a biochemical reaction and are speciic for each type of reaction. Without to form a globular structure. The catalytic activity is restricted to a small portion of the structure known as the active site. The reactant called substrate is attached to the active site consisting of these enzymes the reaction would proceed at a very slow speed making life impossible.
between the enzyme and its substrate, often it contributes directly to the chemical reactions which inorganic ion If the non-protein part is covalently bonded, it is known as a prosthetic group. If it is loosely attached
to the protein part, it is known as coenzyme. It is closely related to vitamins, which represent the
essential raw materials from which coenzymes are made. Only small quantities of vitamins are
needed because, like enzymes, co-enzyme can be used again and again. An enzyme with its coenzyme, or prosthetic group, removed is designated as apoenzyme. Adding the correct concentrated coenzyme to the apoenzyme will restore enzyme activity. An activated enzyme consisting of polypeptide chain and a cofactor is known as holoenzyme.
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... TWINS
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