Tag Archives | Biochemistry

Mechanisms of Enzymatic Reactions

In this article we will discuss about the mechanisms of enzymatic reactions. While studying the kinetics of enzymatic reactions we noted that Michaelis was led to postulate the formation of an intermediate enzyme-substrate com­plex right at the beginning of this century. What was then only a hypothesis was later largely confirmed and proved. The great disproportion between the size of [...]

By |2017-03-04T09:34:57+00:00March 4, 2017|Enzymes|Comments Off on Mechanisms of Enzymatic Reactions

Free Energy of Activation and Role of Catalysts | Enzymes

In this article we will discuss about the free energy of activation and the role of catalysts. An exergonic reaction is a spontaneous reaction; it can therefore yield energy usable for chemical, mechanical or electrical work. However, it should be remembered that spontaneous does not mean rapid, but only without exter­nal energy input. A spontaneous exergonic reaction can be extremely [...]

By |2017-03-04T09:34:57+00:00March 4, 2017|Catalysts|Comments Off on Free Energy of Activation and Role of Catalysts | Enzymes

Effect of Physical and Chemical Agents on Kinetics | Enzymes

We will first consider the effects of the variations of two physical factors, temperature and pH. We will then examine certain chemical agents (or effec­tors) which can modify the kinetics of enzymatic reactions and are either activators or inhibitors.  1. Effect of Temperature: The study of the initial velocity of an enzymatic reaction as a function of temperature reveals two [...]

By |2017-03-04T09:34:57+00:00March 4, 2017|Enzymes|Comments Off on Effect of Physical and Chemical Agents on Kinetics | Enzymes
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