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Large group of over a thousand proteins that play a central role in the metabolism of all living organisms. They control or speed up the vast majority of biochemical reactions, such as growth, metabolism, stimulus reception and transmission, immunity and digestion and to copy the DNA . In plants, is, among other things, the Photosynthesis controlled. The formed as a portmanteau word meaning "leaven" or "yeast" and was designed by German physiologist Wilhelm KÃ¼hne F. (1837-1900) introduced earlier, the term "enzyme" is used. In addition to microorganisms, enzymes are also at a Fermentation played a decisive role by providing a starting material such as wine Vinegar . convert Enzymes in winemaking play starting from the Fermentation to In bottles also significant. Some are also produced artificially and harmful in the wine making and control Microorganisms employed. Enzymes are important in the context Chitinases , Glucanases , Invertase , Lysozyme , Oxidases (Laccase, tyrosinase), Pectinases , Suberase , Ureases and Zymase . See also under Ã¶nologische Enzyme .