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Give information regarding nucleic acids...

Give information regarding nucleic acids.

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Almost all enzymes are proteins.
There are some nucleic acids that behave like enzymes. These are called ribozymes.
An enzyme can be depicted by linear diagram. An enzyme like any protein has a primary structure, i.e. amino acids sequence of the protein.
An enzyme like any protein has the secondary and tertiary structures. Back bone of the protein chain folds upon itself, the chain criss-crosses itself and hence, many crevices or pockets are made.
One such pocket is the .active site.. An active site of an enzyme is a crevice or pocket into which the substrate fits.
Thus enzymes, through their active site, catalyse reactions at a higher rate.
Enzyme catalysts differ from inorganic catalysts in many ways, one major difference is that, Inorganic catalysts work efficiently at high temperatures and high pressures, while enzymes get damaged at high temperatures (above 40°C). Enzymes isolated from thermophilic organisms who live under extreme high temperatures (e.g., hot vents and sulphur springs etc.), are stable and retain their catalytic power at high (80°-90°C) temperatures. Thermal stability is thus an important quality of such enzymes isolated from thermophilic organisms.
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