Enzymes are biomolecules with highly specialized catalytic functions produced by all living organisms and are responsible for biochemical reactions in plants, animals, microorganisms and human beings. Nowadays enzymes are considered as core of biotechnology because they are the main tools for the application of basic biotechnological techniques, they act as the target of the therapeutic drugs and are indispensable intermediates in all biotechnological processes. The concept of the therapeutic enzymes has been around for at least 40 years. Microbial enzymes are preferred over other sources and in this review different types of microbial enzymes are discussed for their therapeutic applications.

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