Biotechnology

  What is Enzyme Commission Number? The Enzyme commission number or “EC number” is a numerical classification scheme for enzymes based on the chemical reactions they catalyze. This system of nomenclature of enzymes was set up by International Union of Biochemistry (IUB) in consultation with the International Union of Pure and Applied Chemistry (IUPAC) in 1955. The detailed chart of Enzyme Commission Number is given below:- Class-1:- Oxidoreductase 1.1.–.– Acting on the CH–OH group of donors 1.   1. 1.– With NAD or NADP as acceptor 1. 1. 2.– With a cytochrome as acceptor 1. 1. 3.– With oxygen as acceptor 1. 1. 4.– With a disulfide as acceptor 1. 1. 5.– With a quinone or similar compound as acceptor 1. 1.99. – With other acceptors 1.2. –.– Acting on the aldehyde or oxo group of donors 1.   2. 1.– With NAD or NADP as acceptor 1. 2. 2.– With a cytochrome as acceptor 1. 2. 3.– With oxygen as acceptor 1. 2. 4.– With a disulfide as acceptor 1. ...

Enzymes display a number of remarkable properties when compared with other types of catalysts. The three most important are their high catalytic power, their specificity, and the extent to which their catalytic activity can be regulated by a variety of naturally occurring. Those three properties are as follows:- 1. Catalytic power:-                        Enzymes may increase the rate of reaction by as much as  10 17 folds. There are not many examples where a direct comparison can be made between the rates of an enzyme-catalysed reaction and the reaction occurring under similar conditions of temperature, pH, etc., but in the absence of enzyme. This is because in the absence of enzyme the rates may be too low to be measured easily. In other instances, where enzymatic and non-enzymatic catalysts are compared, the former catalyse much higher rates and in some cases do so at significantly lower temperature. The optim...

  What are enzymes? Enzymes are catalysts that is they speed up the rates of reactions without undergoing any sort of permanent change. They are also called as " Biocatalysts ". The word " enzyme"  is derived from the Greek language and its literal meaning is " in yeast " and it was first used by scientist Khune in 1878. The term enzyme was thus intended to emphasize that catalytic activity was " in yeast" that is a manifestation of an extraction or a secretion rather than of the whole organism. History of study on Enzymes. 1. In 1897, scientist Buchner did an experiment to show that activity of an enzyme could be expressed without the need of intact cellular structure by using filtrates of yeast extracts to catalyse the fermentation process. 2. In 1894, Emil Fischer  performed some classical studies on carbohydrate metabolizing enzymes in which he demonstrated the specificity shown by an enzyme for a substrate. On the basis of his experiments h...